2019-05-22 Akim Demaille version 3.4.1 * NEWS: Record release date. 2019-05-22 Akim Demaille NEWS: update 2019-05-20 Akim Demaille CI: remove useless apt-get update The apt addons already ran it for us, it is not needed. * .travis.yml: here. 2019-05-20 Akim Demaille c++: beware of to_string portability issues Reported by Bruno Haible. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00033.html * m4/bison-cxx-std.m4 (_BISON_CXXSTD_11_snippet): Check it. 2019-05-20 Akim Demaille doc: avoid Texinfo portability issues Reported by Bruno Haible. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00024.html Fixed by Karl Berry. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00034.html * doc/bison.texi: Don't specify the langage, rely on the default. Avoid blank pages. 2019-05-19 Akim Demaille examples: don't run those that require f?lex when it's not available Reported by Bruno Haible. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00026.html * configure.ac (FLEX_WORKS): New. * examples/c/lexcalc/local.mk, examples/c/reccalc/local.mk: Use it. 2019-05-19 Akim Demaille diagnostics: don't crash when libtextstyle is installed Reported by neok m4700. https://lists.gnu.org/archive/html/bison-patches/2019-05/msg00025.html https://github.com/akimd/bison/pull/11 * src/complain.c (complain_init_color): style_file_prepare _needs_ a string as second argument. 2019-05-19 Akim Demaille CI: avoid useless git costs The final gain is small: 2h2min instead 2h9min. But that is still an improvement. * .travis.yml (git.depth): Make the clone very shallow. (git.submodules): Don't clone gnulib in test jobs. (jobs.include.compile.script): Do it here. 2019-05-19 Akim Demaille fix: copyable instead of copiable Reported by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00020.html * data/skeletons/lalr1.cc, doc/bison.texi: here. 2019-05-19 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-05-19 Akim Demaille version 3.4 * NEWS: Record release date. 2019-05-19 Akim Demaille fix: use copiable, not copyable Reported by Hans Åberg. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00017.html * data/skeletons/lalr1.cc, doc/bison.texi: here. 2019-05-19 Akim Demaille NEWS: update for 3.4 2019-05-19 Akim Demaille tests: adjust to GCC9 diagnostics with a margin * tests/synclines.at (_AT_SYNCLINES_COMPILE): Remove the margin. 2019-05-19 Akim Demaille regen 2019-05-19 Akim Demaille diagnostics: %pure-parser is obsolete Reported by Uxio Prego. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00029.html * src/scan-gram.l, src/parse-gram.y (PERCENT_PURE_PARSER) (handle_pure_parser): New. Issue a deprecation/update notice for %pure-parser. * doc/bison.texi (Java Bison Interface): Don't mention %pure-parser. * tests/actions.at, tests/input.at: Adjust. 2019-05-19 Akim Demaille diagnostics: clean up convention for colored diagnostics * data/diagnostics.css: Rename as... * data/bison-default.css: this. Add the GPL header. This is the convention followed by Bruno Haible in gettext. Adjust dependencies. * src/complain.c (complain_init_color): Use BISON_STYLE instead of BISON_DIAGNOSTICS_STYLE. 2019-05-19 Akim Demaille CI: use a pipeline: first build the tarball, then check it Build the tarball in one job, check it in many. Unfortunately no real gain in overall duration. With help from Clément Démoulins. * .travis.yml: here. Remove all the tricks that were used to be able to boostrap on old distros. (before_install): Merge into 'script', because before_install applies to all the jobs, and we don't want to run it for the 'compile' job. 2019-05-18 Akim Demaille examples: fix srcdir/builddir issues * examples/d/local.mk, examples/java/local.mk: here. 2019-05-18 Akim Demaille gnulib: update In preparation for Bison 3.4, revert to the version before this commit: commit 03752516b21091cf3c4beea7e8b9bcad462d50ed Author: John Darrington Date: Sun May 12 00:42:36 2019 +0200 version-etc: Ease translation. * lib/version-etc.c (version_etc_arn, emit_bug_reporting_address): Move URLs and formatting newlines out of translatable string. because it changes the messages for --version, translated in gnulib.po. These changes are not yet available on the translation project, so we would have a regression in the set of translated strings. 2019-05-13 Akim Demaille build: do not use $< in plain rules It works only in implicit rules (or with GNU Make, but not with Solaris Make). Reported by Bruno Haible. http://lists.gnu.org/archive/html/bug-bison/2019-05/msg00009.html Diagnosed thanks to Kiyoshi Kanazawa. * examples/c/reccalc/local.mk, examples/d/local.mk, * examples/java/local.mk: Don't use $< in non implicit rules. 2019-05-12 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-05-12 Akim Demaille version 3.3.91 * NEWS: Record release date. 2019-05-12 Akim Demaille NEWS: update 2019-05-12 Akim Demaille gnulib: update 2019-05-11 Akim Demaille style: remove incorrect comment * src/getargs.c: here. It's documented in getargs.h anyway. 2019-05-09 Akim Demaille doc: use colors for diagnostics in TeX too Thanks to Gavin Smith and Patrice Dumas. http://lists.gnu.org/archive/html/help-texinfo/2019-04/msg00015.html * doc/bison.texi (@colorWarning, @colorError, @colorNotice) (@colorOff): Define for TeX and HTML. (@dwarning, @derror, @dnotice): Use them. 2019-05-08 Akim Demaille gnulib: update to fix location tracking in UTF-8 on Solaris This update contains Bruno Haible's fix for the location tracking issue reported by Kiyoshi Kanazawa. https://lists.gnu.org/archive/html/bug-gnulib/2019-05/msg00020.html https://lists.gnu.org/archive/html/bug-bison/2019-04/msg00020.html 2019-05-08 Akim Demaille diagnostics: rename --style=debug as --color=debug It is more consistent with --color=html, --color=test, etc. * src/getargs.h, src/getargs.c (style_debug): Rename as... (color_debug): this. (getargs_colors): Rename --style=debug as --color=debug. Adjust dependencies. 2019-05-08 Akim Demaille diagnostics: support --color=html Based on a message from Bruno Haible. https://git.savannah.gnu.org/gitweb/?p=gettext.git;a=commitdiff;h=fe18e92743b7226791a5f28d7c786941a1bf8cc9 This does not generate proper HTML: special characters are not escaped for instance. This is a hidden feature meant for Bison developers, not end users. * src/complain.c (complain_init_color): Support --color=html. 2019-05-08 Akim Demaille tests: use %empty instead of comments * tests/c++.at, tests/glr-regression.at: here. 2019-05-08 Akim Demaille fixits: sort them before applying them An experimental commit introduced a fix-it hint that changes comments such as "/* empty */" into %empty. But in some case, because diagnostics are not necessarily emitted in order, the fixits also come in disorder, which must never happen, as the fixes are installed in one pass. * src/fixits.c (fixits_register): Insert them in order. 2019-05-04 Akim Demaille style: use warning_is_enabled instead of duplicating it * src/complain.c (deprecated_directive): Here. 2019-05-03 Akim Demaille fixits: be sure to preserve the action when adding %empty Currently we remove the rhs to install %empty instead. * src/reader.c (grammar_rule_check_and_complete): Insert the missing %empty in front of the rhs, not in replacement thereof. * tests/actions.at (Add missing %empty): Check that. 2019-05-03 Akim Demaille tests: don't duplicate the portability prologue * tests/actions.at, tests/input.at: Don't repeat the prologue, skip it. * tests/diagnostics.at, tests/local.at: Comment changes. 2019-05-03 Akim Demaille style: use consistently *_loc for locations Some members are called foo_location, others are foo_loc. Stick to the latter. * src/gram.h, src/location.h, src/location.c, src/output.c, * src/parse-gram.y, src/reader.h, src/reader.c, src/reduce.c, * src/scan-gram.l, src/symlist.h, src/symlist.c, src/symtab.h, * src/symtab.c: Use _loc consistently, not _location. 2019-05-03 Akim Demaille style: clarify the use of symbol_lists' locations symbol_list features a 'location' and a 'sym_loc' member. The former is expected to be set only for symbol_lists that denote a symbol (not a type name), and the latter should only denote the location of the symbol/type name. Yet both are set, and the name "location" is too unprecise. * src/symlist.h, src/symlist.c (symbol_list::location): Rename as rhs_loc for clarity. Move it to the "section" of data valid only for rules. * src/reader.c, src/scan-code.l: Adjust. 2019-05-03 Akim Demaille maint: update gnulib-po/.gitignore 2019-04-29 Akim Demaille tests: don't require a D compiler Reported by Kiyoshi Kanazawa. http://lists.gnu.org/archive/html/bug-bison/2019-04/msg00018.html * tests/atlocal.in (BISON_DC_WORKS): New. * tests/local.at (AT_COMPILE_D): Use it. 2019-04-29 Akim Demaille doc: use svg instead of png * doc/bison.texi, doc/local.mk: here. 2019-04-29 Akim Demaille doc: use colors * doc/bison.texi (dwarning, derror, dnotice): New. Use them in the diagnostics. * doc/local.mk (AM_MAKEINFOFLAGS): Pass customization variables. 2019-04-28 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-04-28 Akim Demaille version 3.3.90 * NEWS: Record release date. 2019-04-28 Akim Demaille package: add missing CLEANFILES * examples: here. 2019-04-28 Akim Demaille build: don't generate the graph reports Revert "build: also generate the graph reports" (4ec413da32760defe1bf382c048d1d2f67e0b58a). The problem is Automake's ylwrap which does not rename y.dot with the appropriate name. We should completely stop using Automake's support for Yacc, which is not something I will do right now. So step back. * Makefile.am (AM_YFLAGS_WITH_LINES): Don't pass --graph. 2019-04-28 Akim Demaille package: don't regen the parser during dist if unneeded * Makefile.am (gen-synclines): New. 2019-04-28 Akim Demaille package: don't ship the sources generated from the parser Because some of our examples use %C%_reccalc_SOURCES = %D%/parse.y Automake ships parse.y and parse.c, and possibly parse.h when it "understands" that there is one. This is not what we want: ship only parser.y. Yet we still want to use Automake to compile the sources from parser.y. The easiest seems to use nodist_%C%_reccalc_SOURCES = %D%/parse.y together with dist_reccalc_DATA = %D%/parse.y %D%/scan.l %D%/Makefile %D%/README.md which guarantees that parse.y is indeed shipped. * examples/c/calc/local.mk, examples/c/lexcalc/local.mk, * examples/c/reccalc/local.mk: Always use nodist_*SOURCES for parsers, let the dist_*_DATA rules do their job. 2019-04-28 Akim Demaille package: various fixes for syntax-check * cfg.mk: Disable checks where needed (e.g., we do want to check the behavior with tabs). (sc_at_parser_check): Remove. Unfortunately since a11c144609255bc6e42c2aff83548e91cbd05425 we no longer use the './' prefix to run programs in the current directory. That was so that we could run Java programs like the other, although they are no run with the `./` prefix (see 967a59d2c08a33f24708450561e2f8010b604523). As a consequence this sc check no longer makes sense. However, since now AT_PARSER_CHECK passes the `./` prefix itself, this sc-check was superfluous. * examples/c/reccalc/scan.l: Use memcpy, not strncpy. * src/ielr.c, src/reader.c: Obfuscate "lr(0)" so that the sc-check for "space before paren" does not fire. * tests/diagnostics.at: Avoid space-tab, use tab-tab. 2019-04-27 Akim Demaille doc: clarify -fsyntax-error * NEWS, doc/bison.texi: here. 2019-04-27 Akim Demaille regen 2019-04-27 Akim Demaille traces: use colors for the semantic values This makes reading the trace slightly easier. It would be very nice to highlight the "big steps", especially reductions. But this is a private experiment: do not use it. * data/diagnostics.css (value): New. * src/parse-gram.y: Use no delimiters and no c quotation for strings to facilitate debugging. (tron, troff, TRACE): New. Not very elegant, but until there is support for printf-formats in libtextstyle, it shall be enough. 2019-04-27 Akim Demaille diagnostics: give m4 precise locations Currently we pass only the columns based on the screen-width, which is important for the carets. But we don't pass the bytes-based columns, which is important for the colors. Pass both. * src/muscle-tab.c (muscle_boundary_grow): Also pass the byte-based column. * src/location.c (location_caret): Clarify. (boundary_set_from_string): Adjust to the new format. * tests/diagnostics.at (Tabulations and multibyte characters from M4): New. 2019-04-27 Akim Demaille diagnostics: fix locations coming from M4 Locations issued from M4 need the byte-based column for the diagnostics to work properly. Currently they were unassigned, which typically resulted in partially non-colored diagnostics. * src/location.c (boundary_set_from_string): Fix the parsed location. * src/muscle-tab.c (muscle_percent_define_default): Set the byte values. * tests/diagnostics.at (Locations from M4): New. 2019-04-27 Akim Demaille diagnostics: show locations in full when debugging This is meant for developers, not end users, that's why I attached it to --trace. * src/getargs.h, src/getargs.c (trace_locations): New. * src/location.c (location_print): Use it. 2019-04-27 Akim Demaille diagnostics: use flush, not fflush * src/complain.c: here. 2019-04-25 Akim Demaille build: use gettext-h We were using the gnulib's gettext module with tricks in bootstrap.conf to avoid useless files. Instead, use gnulib's gettext-h module. * .travis.yml: Force Gettext 0.18.3 on Trusty. * bootstrap.conf: Use gettext-h instead of gettext. (excluded_files): Remove. * configure.ac (AM_GNU_GETTEXT_VERSION): Bump to 0.19. 2019-04-25 Akim Demaille NEWS: update 2019-04-25 Akim Demaille api.location.type: support it in C Reported by Balázs Scheidler. * data/skeletons/c.m4 (b4_location_type_define): Use api.location.type if defined. * doc/bison.texi: Document it. * tests/local.at (AT_C_IF, AT_LANG_CASE): New. Support Span in C. * tests/calc.at (Span): Convert it to be usable in C and C++. Check api.location.type with yacc.c and glr.c. 2019-04-24 Akim Demaille updates: insert/remove %empty * src/reader.c (grammar_rule_check_and_complete): Generate fixits for adding/removing %empty. * tests/actions.at, tests/diagnostics.at, tests/existing.at: Adjust. 2019-04-24 Akim Demaille regen 2019-04-24 Akim Demaille diagnostics: better rule locations The "identifier and colon" of a rule is implemented as a single token, but whose location is only that of the identifier (so that messages about the lhs of a rule are accurate). When reducing empty rules, the default location is the single point location on the end of the previous symbol. As a consequence, when Bison parses a grammar, the location of the right-hand side of an empty rule is based on the lhs, *independently of the position of the colon*. And the colon can be way farther, separated by comments, white spaces, including empty lines. As a result, some messages look really bad. For instance: $ cat foo.y %% foo : /* empty */ bar : /* empty */ gives $ bison -Wall foo.y foo.y:2.4: warning: empty rule without %empty [-Wempty-rule] 2 | foo : /* empty */ | ^ foo.y:3.4: warning: empty rule without %empty [-Wempty-rule] 3 | bar | ^ The carets are not at the right column, not even the right line. This commit passes the colon "again" after the "id colon" token, which gives more accurate locations for these messages: $ bison -Wall foo.y foo.y:2.10: warning: empty rule without %empty [-Wempty-rule] 2 | foo : /* empty */ | ^ foo.y:4.2: warning: empty rule without %empty [-Wempty-rule] 4 | : /* empty */ | ^ * src/scan-gram.l (SC_AFTER_IDENTIFIER): Rollback the colon, so that we scan it again afterwards. (INITIAL): Scan colons. * src/parse-gram.y (COLON): New. (rules): Parse the colon after the rule's id_colon (and possible named reference). * tests/actions.at, tests/conflicts.at, tests/diagnostics.at, * tests/existing.at: Adjust. 2019-04-24 Akim Demaille fixits: track byte-columns, not character-columns Because the fix-its were ready the character-based columns, but were applied on byte-based columns, the result with multibyte characters or tabs could be "interesting". For instance %fixed-output_files %fixed_output-files %fixed-output-files %define api.prefix {foo} %no-default-prec would give %fixed-%fixed-output-files %fixed_output-files %fixed-orefix= "foo" o_default-prec * src/fixits.c (fixit_print, fixits_run): Work on byte-base columns. * tests/input.at: Check it. 2019-04-24 Akim Demaille diagnostics: expose a means to know whether a warning is enabled * src/complain.h, src/complain.c (warning_is_enabled): New. 2019-04-23 Akim Demaille gnulib: let it use its own PO domain See https://www.gnu.org/software/gnulib/manual/html_node/Localization.html. * bootstrap.conf: Create gnulib-po. * Makefile.am, configure.ac: Use it. * po/POTFILES.in: Remove files now in gnulib. * src/main.c: Open the bison-gnulib domain. 2019-04-23 Akim Demaille diagnostics: don't try to quote special files Based on a report by Todd Freed. http://lists.gnu.org/archive/html/bug-bison/2019-04/msg00000.html See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90034 * src/location.c (caret_info): Also track the file name. (location_caret): Don't quote special files. 2019-04-23 Akim Demaille diagnostics: document the change of format * doc/bison.texiL Adjust output. Also, Graphviz has no uppercsae V. * NEWS: Explain the format change. 2019-04-23 Akim Demaille diagnostics: copy GCC9's format Currently, when we quote the source file, we indent it with one space, and preserve tabulations, so there is a discrepancy and the visual rendering is bad. One way out is to indent with a tab instead of a space, but then this space can be used for more information. This is what GCC9 does. Let's play copy cats. See https://lists.gnu.org/archive/html/bison-patches/2019-04/msg00025.html https://developers.redhat.com/blog/2019/03/08/usability-improvements-in-gcc-9/ https://gcc.gnu.org/onlinedocs/gccint/Guidelines-for-Diagnostics.html#Guidelines-for-Diagnostics * src/location.c (location_caret): Prefix quoted lines with the line number and a pipe, fitting 8 columns. * tests/actions.at, tests/c++.at, tests/conflicts.at, * tests/diagnostics.at, tests/input.at, tests/java.at, * tests/named-refs.at, tests/reduce.at, tests/regression.at, * tests/sets.at: Adjust expectations. Partly by "./build-aux/update-test tests/testsuite.dir/*/testsuite.log" repeatedly, and partly by hand. 2019-04-23 Akim Demaille diagnostics: fix the handling of multibyte characters This is a pity: efforts were invested in computing correctly the number of screen columns consumed by multibyte characters, but the routines that do that were fed by single-byte inputs... As a consequence Bison never displayed correctly locations when there are multibyte characters. * src/scan-gram.l (mbchar): New. Use it instead of . in the catch-all clause. * tests/diagnostics.at (Tabulations): Enhance into... (Tabulations and multibyte characters): this. 2019-04-23 Akim Demaille diagnostics: check the handling of tabulations * tests/diagnostics.at (Tabulations): here. 2019-04-23 Akim Demaille diagnostics: fix styling issues Single point locations (equal boundaries) are troublesome, and we were incorrectly ending the style in their case. Which results in an abort in libtextstyle. There is also a confusion between columns as displayed on the screen (which take into account multibyte characters and tabulations), and the number of bytes. Counting the screen-column incrementally (character by character) is uneasy (because of multibyte characters), and I don't want to maintain a buffer of the current line when displaying the diagnostic. So I believe the simplest solution is to track the byte number in addition to the screen column. * src/location.h, src/location.c (boundary): Add the byte-column. Adjust dependencies. * src/getargs.c, src/scan-gram.l: Adjust. * tests/diagnostics.at: Check zero-width locations. 2019-04-23 Akim Demaille diagnostics: check the styling Enable checking of styles even when libtextstyle is not installed. * src/getargs.h, src/getargs.c (style_debug): New. (getargs_colors): Set it when --style=debug. * src/complain.c (begin_use_class, end_use_class): Use it. * tests/diagnostics.at: New. 2019-04-23 Akim Demaille TODO: update Let's prepare 3.4 with more or less what we have. Schedule some features for 3.5 and 3.6. Remove obsolete stuff. 2019-04-19 Akim Demaille doc: sort the warning categories * doc/bison.texi, src/getargs.c: here. 2019-04-19 Akim Demaille style: formatting changes * tests/actions.at, tests/calc.at, tests/input.at: here. 2019-04-19 Akim Demaille graphviz: move constant computation out of a loop * src/graphviz.c (output_red): here. 2019-04-18 Akim Demaille diagnostics: fix memory leak in libtextstyle * src/complain.h, src/complain.c (complain_free): New. * src/main.c: Use it. 2019-04-17 Akim Demaille tests: remove useless feature * tests/calc.at (read_signed_integer): Rename as... (read_integer): this. We never read signs here. 2019-04-14 Akim Demaille traces: make closure() less verbose * src/getargs.h, src/getargs.c (trace_closure): New. * src/closure.c (closure): Use it. 2019-04-14 Akim Demaille build: also generate the graph reports * Makefile.am (AM_YFLAGS_WITH_LINES): here. 2019-04-12 Akim Demaille yacc.c: minor style change * data/skeletons/yacc.c: To improve consistency with other similar pieces of code. 2019-04-12 Akim Demaille style: scope reduction in lalr.c * src/lalr.c (initialize_goto_follows): here. 2019-04-12 Akim Demaille style: comment changes * src/closure.h, src/closure.c, src/lalr.c: here. 2019-04-12 Akim Demaille traces: improve logs * src/lalr.c: Move logs to a better place to understand the chronology of events. * src/symlist.c (symbol_list_syms_print): Don't dump core on type elements. 2019-04-07 Akim Demaille doc: minor fixes * doc/bison.texi: Use consistently $ and @kbd in shell examples. Prefer sticking to English words: output and file instead of outfile and infile. 2019-04-03 Akim Demaille regen 2019-04-03 Akim Demaille bison: use no-lines The 'regen' commit in Bison's history are a nuisance. They are especially big because of the #lines. Let's generate our parse without these lines in the repository, but generate them in the tarball. * Makefile.am (AM_YFLAGS_WITH_LINES): New. (AM_YFLAGS): Use it. (dist-hook): Regenerate the parser with #lines. 2019-04-03 Akim Demaille no-lines: avoid leaving an empty line instead of the syncline Currently, with --no-lines, instead of "#line file line\n", we emit "\n". Let's emit nothing. * data/skeletons/bison.m4 (b4_syncline): Emit at end-of-line when enabled. * data/skeletons/bison.m4, data/skeletons/c.m4, data/skeletons/glr.cc, * data/skeletons/lalr1.cc, src/output.c: Use dnl after b4_syncline to avoid spurious empty lines. * tests/synclines.at (Sync Lines): Make sure that --no-lines is like grep -v #line. * tests/calc.at: Make sure that a rich grammar file behaves properly with %no-lines. 2019-04-03 Akim Demaille java: use full locations for diagnostics about destructors Currently we use the syncline to report errors about a symbol's destructor/printer. This is not accurate (only file and line), and this is incorrect: the file name is double quotes (a recent change, needed to make sure we escape properly double quotes in it). And worst of all: with --no-line, b4_syncline expands to nothing. Rather, push the locations into the backend, and use them. * src/muscle-tab.h, src/muscle-tab.c (muscle_location_grow): Make it public. * src/output.c (prepare_symbol_definitions): Use it to pubish the location of the printer and destructor. * data/skeletons/lalr1.java: Use complain_at instead of complain. * tests/java.at (Java invalid directives): Adjust expectations. * data/skeletons/bison.m4 (b4_symbol_action_location): Remove. We should not use b4_syncline this way. 2019-04-03 Akim Demaille java: prefer errors to fatal errors Fatal errors are inconvenient, and should be reserved to cases where we cannot continue. Here, it could even be warnings actually: these directives will simply be ignored. * data/skeletons/lalr1.java: Prefer error (b4_complain) to fatal errors (b4_fatal). * tests/java.at (Java invalid directives): New. 2019-04-03 Akim Demaille tests: formatting changes * tests/javapush.at: here. 2019-04-03 Akim Demaille lalr: offer more flexibility in debugging routines * src/state.h, src/state.c (state_transitions_print): New, extracted from... (state_transitions_set): here. 2019-03-31 Akim Demaille lalr: don't overbook memory I never understood why we book ngotos+1 slots for relations between gotos: there are at most ngotos images, not ngotos+1 (and "includes" does have cases where a goto is in relation with itself, so it's not ngotos-1). Maybe bbf37f2534a8e5a6b4e28047f0a10903e6dc73f9 explains the +1: a bug left us register a goto several times on occasion, and the +1 might have been a means to avoid this problem in most cases. Now that this bug is addressed, we should no longer overbook memory, if only for the clarity of the code ("why ngotos+1 instead of ngotos?"). * src/lalr.c: A goto has at most ngotos images, not ngotos+1. While at it, avoid useless repeated call to map_goto introduced in bbf37f2534a8e5a6b4e28047f0a10903e6dc73f9. 2019-03-30 Akim Demaille lalr: show lookback for debug * src/lalr.c (lookback_print): New. (build_relations): Use it. Also show edges. 2019-03-30 Akim Demaille diagnostics: don't crash when declaring the error token as an nterm Reported by wcventure. http://lists.gnu.org/archive/html/bug-bison/2019-03/msg00008.html * src/symtab.c (complain_class_redeclared): Don't print empty locations. There can only be empty locations for predefined symbols. And the only symbol that is lexically available is the error token. So this appears to be the only possible way to have an error involving an empty location. * tests/input.at (Symbol class redefinition): Check it. 2019-03-30 Akim Demaille lalr: fix segmentation violation The "includes" relation [DeRemer 1982] is between gotos, so of course, for a given goto, there cannot be more that ngotos (number of gotos) images. But we manipulate the set of images of a goto as a list, without checking that an image was not already introduced. So we can "register" way more images than ngotos, leading to a crash (heap buffer overflow). Reported by wcventure. http://lists.gnu.org/archive/html/bug-bison/2019-03/msg00007.html For the records, this bug is present in the first committed version of Bison. * src/lalr.c (build_relations): Don't insert the same goto several times. * tests/sets.at (Build Relations): New. 2019-03-30 Akim Demaille state: more debug traces * src/state.c (state_transitions_set): Show the transitions. 2019-03-30 Akim Demaille style: rename variables for consistency * src/lalr.c: Use trans for transitions, and reds for reductions, as elsewhere in the code. * src/state.h: Comment changes. 2019-03-30 Akim Demaille gram: fix and improve log message It seems that not many people read these logs: the error was introduced in 2001 (3067fbef531832df1e43bbd28787655808361eed), * src/gram.c (grammar_dump): Fix the headers of the table: remove duplicate display of "Ritem Range". While at it, remove duplicate display of the rule number (and remove an incorrect comment about it: these numbers _are_ equal). * tests/sets.at (Reduced Grammar): Use useless rule, nterm and token in the example. 2019-03-30 Akim Demaille tests: add a tool for mass updates When we update some output format, too many adjustements must be made by hand. This script updates most tests based on the actual output made during the tests. * build-aux/update-test: New. 2019-03-25 Akim Demaille style: remove now useless _GL_UNUSED * src/getargs.c (getargs_colors): Here. Useless since 4d34b06fb3a38eb050439084476a6b3e292c5680. 2019-03-24 Theophile Ranquet tables: use bitsets for a performance boost Suggested by Yuri at . The improvement is marginal for most grammars, but notable for large grammars (e.g., PosgreSQL's postgre.y), and very large for the sample.y grammar submitted by Yuri in http://lists.gnu.org/archive/html/bison-patches/2012-01/msg00012.html. Measured with --trace=time -fsyntax-only. parser action tables postgre.y sample.y Before 0,129 (44%) 37,095 (99%) After 0,117 (42%) 5,046 (93%) * src/tables.c (pos): Replace this set of integer coded as an unsorted array or integers with... (pos_set): this bitset. 2019-03-24 Akim Demaille yacc.c: don't suggest api.header.include when --defines is not used See 4e19ab9fcd28c9361ff08f46e5e353effb0a0520: the suggestion to include the header file should not be emitted when the header is not generated. * data/skeletons/yacc.c: Here. 2019-03-24 Akim Demaille reader: clarify variable names * src/reader.c (grammar_rule_check_and_complete): When 'p' and 'lhs' are aliases, prefer the latter, for clarity and consistency. (grammar_current_rule_begin): Avoid 'p', current_rule suffices. * src/gram.h, src/gram.c: Comment changes. ptdr# calc.tab.c 2019-03-24 Akim Demaille diagnostics: style changes * src/location.c (location_caret): Clarify a bit. 2019-03-24 Akim Demaille diagnostics: use gnulib's libtextstyle-optional Bruno Haible just added a default implementation of libtextstyle's interface when the library is not available. https://lists.gnu.org/archive/html/bison-patches/2019-03/msg00025.html * gnulib: Update. * bootstrap.conf: Replace libtextstyle with libtextstyle-optional. * src/complain.c, src/getargs.c: Remove now useless cpp guards. 2019-03-23 Akim Demaille diagnostics: fix handling of style in limit cases * src/location.c (location_caret): Beware of the cases where the start and end columns are the same, or when the location is multilines. 2019-03-23 Akim Demaille warnings: don't use _Noreturn with G++ 4.7 in C++98 mode The timevar and bitset modules now use the c99 module which causes $CXX to now include -std=gnu++11 when possible. Unfortunately, G++ 4.7 does not implement [[noreturn]] in C++11 mode, so our tests of glr.cc (which uses _Noreturn) fail with input.cc:954:1: error: expected unqualified-id before '[' token right before [[noreturn]]. 4.8 works fine. * data/skeletons/c.m4 (b4_attribute_define): Do not use [[noreturn]] with GCC 4.7. 2019-03-17 Akim Demaille d: tests: use more a natural approach for the scanner See f8408562f8439654261418406296e4108d2a995f. * tests/calc.at: Stop imitating the C API. Prepare more tests to run in the future. %verbose works as expected (what a surprise, it's unrelated to the skeleton...). 2019-03-17 Akim Demaille regen 2019-03-17 Akim Demaille style: rename spec_defines_file as spec_header_file The variable spec_defines_file denotes the name of the generated header. Its name is derived from --defines/%defines, whose name in turn is derived from the fact that the header, in Yacc, contained the Not only does the header now contain a lot more than just the token definitions, but we no longer even generate macros, but an enum... Let's modernize our vocabulary. * src/files.h, src/files.c (spec_defines_file): Rename as... (spec_header_file): this. 2019-03-17 Akim Demaille yacc.c: provide a means to include the header in the implementation Currently when --defines is used, we generate a header, and paste an exact copy of it into the generated parser implementation file. Let's provide a means to #include it instead. We don't do it by default because of the Autotools' ylwrap. This program wraps invocations of yacc (that uses a fixed output name: y.tab.c, y.tab.h, y.output) to support a more modern naming scheme (dir/foo.y -> dir/foo.tab.c, dir/foo.tab.h, etc.). It does that by renaming the generated files, and then by running sed to propagate these renamings inside the files themselves. Unfortunately Automake's Makefiles uses Bison as if it were Yacc (with --yacc or with -o y.tab.c) and invoke bison via ylwrap. As a consequence, as far as Bison is concerned, the output files are y.tab.c and y.tab.h, so it emits '#include "y.tab.h"'. So far, so good. But now ylwrap processes this '#include "y.tab.h"' into '#include "dir/foo.tab.h"', which is not guaranteed to always work. So, let's do the Right Thing when the output file is not y.tab.c, in which case the user should %define api.header.include. Binding this behavior to --yacc is tempting, but we recently told people to stop using --yacc (as it also enables the Yacc warnings), but rather to use -o y.tab.c. Yacc.c is the only skeleton concerned: all the others do include their header. * data/skeletons/yacc.c (b4_header_include_if): New. (api.header.include): Provide a default value when the output is not y.tab.c. * src/parse-gram.y (api.header.include): Define. 2019-03-17 Akim Demaille d: don't link against LIBS * tests/local.at (AT_COMPILE_D): Don't pass LIBS, dmd does not like being given -lintl. 2019-03-17 Akim Demaille address warnings from GCC's UB sanitizer Running with CC='gcc-mp-8 -fsanitize=undefined' revealed Undefined Behaviors. https://lists.gnu.org/archive/html/bison-patches/2019-03/msg00008.html * src/state.c (errs_new): Don't call memcpy with NULL as source. * src/location.c (add_column_width): Don't assume that the column argument is nonnegative: the scanner sometimes "backtracks" (e.g., see ROLLBACK_CURRENT_TOKEN and DEPRECATED) in which case we can have negative column numbers (temporarily). Found in test 3 (Invalid inputs). 2019-03-16 Akim Demaille diagnostics: use libtextstyle for colored output Bruno Haible released libtextstyle, a library for colored output based on CSS. Let's use it to generate colored diagnostics, provided libtextstyle is available. See https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00176.html https://lists.gnu.org/archive/html/bison-patches/2019-02/msg00073.html https://lists.gnu.org/archive/html/bison-patches/2019-02/msg00084.html https://lists.gnu.org/archive/html/bison-patches/2019-03/msg00007.html * bootstrap.conf (gnulib_modules): Use libtextstyle when possible. * data/diagnostics.css: New. * src/complain.c (begin_use_class, end_use_class, flush) (severity_style, complain_init_color): New. Use them. * src/getargs.c (getargs_colors): New. (getargs): Use it. Skip --color and --style. * src/location.h, src/location.c (location_print): Use a style. * tests/bison.in: Force --color=yes when stderr is a tty. * tests/local.at: Disable colors during the test suite. * tests/input.at: Adjust expectations to the extra options passed on the command line. 2019-03-16 Akim Demaille style: clean up complain.c * src/complain.c (severity_prefix): New. (error_message): Take the severity as argument, instead of the prefix. 2019-03-16 Akim Demaille yacc.c: emit the header before the implementation file * data/skeletons/yacc.c: here. This is more logical for the time stamps, but it's also required by following patches: the shared declarations are also in charge of handling api.value.type=union. So far, they are run in the implementation file in both cases (with or without header). But if we run them only in the header, then the implementation file is emited with incorrect support for api.value.type=union. Arguably we should not have such dependencies. This is because we have side-effects in our backend (redefining the symbols' type and type_tag). In the future we should find a better solution for this, without sacrificing the independence of the backend from bison itself (i.e., I don't think we should handle api.value.type=union in bison, leave it to m4). 2019-03-16 Akim Demaille simplify the generated #line Currently we generate things like: #line 683 "src/parse-gram.y" /* yacc.c:316 */ The first part is of course very important: compilers point the users to their grammar file rather than into the generated parser. The second part points to the place in the skeletons that generated this piece of code. This dependency on the Bison skeletons generates lots of useless 'git diff'. This location is useless for the regular user (who does not care about the skeletons) and is actually not useful for Bison developpers too (I never used this to locate the code in skeletons that generated output). So disable it completely. If someone thinks this was actually useful, a %define variable should be provided to control the level of verbosity of '#line', in replacement of --no-lines. So now, generate: #line 683 "src/parse-gram.y" * data/skeletons/bison.m4 (b4_sync_end): Emit nothing. 2019-03-13 Akim Demaille gnulib: update 2019-03-13 Akim Demaille tests: remove duplicates * tests/regression.at (Invalid inputs, Invalid inputs with {}): Remove, there are exact copies of them in input.at. 2019-03-02 Akim Demaille d: simplify the API to build the scanner of the example * examples/d/calc.y (calcLexer): Add an overload for File. Use it. 2019-03-01 H. S. Teoh d: modernize the scanner of the example https://lists.gnu.org/archive/html/bison-patches/2019-02/msg00121.html * examples/d/calc.y (CalcLexer): Stop shoehorning C's API into D: use a range based approach in the scanner, rather than some imitation of getc/ungetc. (main): Adjust. 2019-03-01 Akim Demaille d: tests: use fewer global variables * tests/calc.at: Move 'input' into the scanner. 2019-02-28 Akim Demaille lalr: clarify the count of lookaheads * src/lalr.c (state_lookahead_tokens_count): Remove wierd `+=` that is actually an `=`. 2019-02-28 Akim Demaille lalr: clarify the API * src/state.h, src/state.c (state_reduction_find): Clarify. Die on errors. * src/lalr.c (goto_list_new): New. Use it. 2019-02-28 Akim Demaille lalr: improve traces * src/lalr.c (follows_print): Just print the symbol tag. Take and print a title. Indent the output. Use it to print the various steps of the computation. (lookahead_tokens_print): Fix a lie: the number displayed is not the number of tokens. Don't display states that don't even have reductions. 2019-02-27 Akim Demaille lalr: print the 'reads' relation * src/relation.h, src/relation.c (relation_print): Accept and use a title. Don't print empty rows. Indent the output. Adjust dependencies. * src/lalr.c (initialize_goto_follows): Print 'reads' in traces. 2019-02-27 Akim Demaille style: comment changes * src/lr0.c: here. 2019-02-26 Akim Demaille dlang: initial changes to run the calc tests on it * configure.ac (DCFLAGS): Define. * tests/atlocal.in: Receive it. * data/skeletons/d.m4 (api.parser.class): Remove spurious YY. * data/skeletons/lalr1.d (yylex): Return an int instead of a YYTokenType, so that we can use characters as tokens. * examples/d/calc.y: Adjust. * tests/local.at: Initial support for D. (AT_D_IF, AT_DATA_GRAMMAR(D), AT_YYERROR_DECLARE(d)) (AT_YYERROR_DECLARE_EXTERN(d), AT_YYERROR_DEFINE(d)) (AT_MAIN_DEFINE(d), AT_COMPILE_D, AT_LANG_COMPILE(d), AT_LANG_EXT(d)): New. * tests/calc.at: Initial support for D. * tests/headers.at 2019-02-26 Akim Demaille d: improve the example * examples/d/calc.y: Exit with failure on errors. Remove useless operators (=, !) meant for the test suite. Add unary + for symmetry. * examples/d/calc.test: Adjust expectations. 2019-02-26 Akim Demaille tests: style changes * tests/local.at AT_YYERROR_DEFINE(java): Use more consistent names. 2019-02-25 Akim Demaille style: eliminate useless indirection * src/relation.h, src/relation.c (relation_digraph): Don't take the biteetv as a pointer, it is already a pointer (as it's an array). 2019-02-25 Akim Demaille style: rename function for clarity Commit db34f7988941444bdc5f2b6adcf7fb83648f9a18 renames the variable F as goto_follows, but forgot to rename this function. * src/lalr.c (initialize_F): Rename as... (initialize_goto_follows): this. 2019-02-25 Akim Demaille lalr: more debug traces I need to be able to read includes and goto_follows. * src/relation.h, src/relation.c (relation_print): Provide a means to pretty-print the nodes of the relation. * src/lalr.c (goto_print, follows_print): New. (set_goto_map): Use goto_print. (build_relations): Show INCLUDES. (compute_FOLLOWS): Rename as... (compute_follows): this. Show FOLLOWS. 2019-02-24 Akim Demaille style: minor changes * examples/c/calc/calc.y, src/lalr.c: Reduce scope. * src/gram.c: Prefer < to >. 2019-02-24 Akim Demaille style: clarify the computation of the lookback edges * src/lalr.c (build_relations): Reduce the scopes. Instead of keeping rp alive in two different loops, clarify the second one by having an index on the path we traverse (i.e., use that index to compute the source state _and_ the symbol that labels the transition). This allows to turn an obscure 'while'-loop in a clearer (IMHO) 'for'-loop. We also consume more variables (by introducing p instead of making more side effects on length), but we're in 2019, I don't think this matters. What does matter is that (IMHO again), this is now clearer. Also, use clearer names. 2019-02-24 Akim Demaille style: scope reduction in tables.c * src/tables.c: here. * src/lalr.c: Prefer < to >. 2019-02-24 Akim Demaille d: formatting changes * data/skeletons/d.m4, data/skeletons/lalr1.d: Avoid trailing spaces. 2019-02-23 Akim Demaille examples: remove stray examples * examples/c/reentrant-calc: Remove. I did not mean to include this example, it was replaced by examples/c/reccalc. 2019-02-21 Akim Demaille tests: factor the execution of Java parsers * tests/local.at (AT_MAIN_DEFINE(java)): Exit failure on failure. (AT_PARSER_CHECK): If in Java, run AT_JAVA_PARSER_CHECK. * tests/conflicts.at (AT_CONSISTENT_ERRORS_CHECK): Simplify. 2019-02-21 Akim Demaille tests: fix a Java tests * tests/conflicts.at (AT_CONSISTENT_ERRORS_CHECK): Fix quotation error. 2019-02-21 Akim Demaille tests: simplify AT_PARSER_CHECK usage Currently the caller must specify the ./ prefix to its command. Let's avoid that: it will be nicer to read, make it easier to have a version that works for Java and C/C++. * tests/local.at (AT_PARSER_CHECK): Prefix the command with ./. Adjust callers. 2019-02-21 Akim Demaille tests: java: factor the definition of Position * tests/local.at (AT_JAVA_POSITION_DEFINE): New. * tests/java.at, tests/javapush.at: Use it. 2019-02-21 Akim Demaille tests: dispatch per lang on AT_DATA_GRAMMAR * tests/java.at: Do that. * tests/conflicts.at: Simplify. * tests/actions.at, tests/c++.at, tests/input.at, tests/local.at, * tests/named-refs.at: Use AT_BISON_OPTION_PUSHDEFS/AT_BISON_OPTION_POPDEFS. 2019-02-21 Akim Demaille tests: dispatch per lang on the definition of yylex * tests/local.at (AT_YYLEX_DEFINE): Dispatch on the language. (AT_YYLEX_DEFINE(java)): New. * tests/conflicts.at, tests/java.at: Use it. 2019-02-21 Akim Demaille tests: de-duplicate * tests/conflicts.at (AT_YYLEX_PROTOTYPE): Don't define it, leave that task to AT_DATA_GRAMMAR. But be honest: tell AT_BISON_OPTION_PUSHDEFS all the options we use. 2019-02-21 Akim Demaille tests: formatting changes * tests/local.at: here. 2019-02-21 Akim Demaille graph: prefer *.gv to *.dot Reported by Hans Åberg. https://lists.gnu.org/archive/html/help-bison/2019-02/msg00064.html * src/files.c (spec_graph_file): Use `*.gv` when 3.4 or better, otherwise `*.dot`. * src/parse-gram.y (handle_require): Pretend we are already 3.4. * doc/bison.texi: Adjust. * tests/local.at, tests/output.at: Exercise this. 2019-02-21 Akim Demaille doc: fixes to please older versions of Texinfo Currently, we have errors: ./doc/bison.texi:13005: node `History' lacks menu item for `Yacc' despite being its Up target * doc/bison.texi (History): Add the local menu. While at it, add a few index entries. 2019-02-17 Akim Demaille doc: style changes * doc/bison.texi (Bibliography): Add [Corbett 1984] and [Johnson 1978]. (History): Use them. And other minor changes. 2019-02-17 Eric S. Raymond doc: a history section * bison.texi (A Brief History of the Greater Ungulates): New section. 2019-02-17 Akim Demaille examples: add an example with a reentrant parser in Flex+Bison Suggested by Eric S. Raymond. https://lists.gnu.org/archive/html/bison-patches/2019-02/msg00066.html * examples/c/reentrant-calc/Makefile, examples/c/reentrant-calc/README.md, * examples/c/reentrant-calc/parse.y, examples/c/reentrant-calc/scan.l * examples/c/reentrant-calc/lexcalc.test, * examples/c/reentrant-calc/local.mk: New. 2019-02-16 Akim Demaille examples: fixes in lexcalc * examples/c/lexcalc/parse.y: Formatting/comment changes. (line): Don't return a value. Print the result here, which avoids printing a value for lines with an error. (yyerror): Be sure to increment the pointed, not the pointer... * examples/c/lexcalc/lexcalc.test: Check errors. * examples/c/lexcalc/local.mk: Fix a dependency. 2019-02-16 Akim Demaille build: fix distcheck Regression introduced in 05a80977798abf472bfc11c477751303ad604733. * doc/local.mk (bison.help): Don't depend on the path of the bison executable. 2019-02-16 Akim Demaille style: move pkgdatadir to files.* Let's move it to a more logical place. * src/output.h, src/output.c (pkgdatadir): Move to... * src/files.h, src/files.c: here. 2019-02-14 Akim Demaille style: rename cleanup_caret as caret_free * src/location.c, src/location.h, src/main.c: here. 2019-02-14 Akim Demaille style: avoid default in switch on enums * src/assoc.c (assoc_to_string): here. 2019-02-14 Akim Demaille doc: run tests/bison, not src/bison * doc/local.mk: Don't run src/bison, as it expects to find all its files installed. Instead, run tests/bison which is ready to run in builddir. 2019-02-13 Akim Demaille gnulib: update 2019-02-12 Akim Demaille style: comment and names changes in map_goto * src/lalr.h, src/lalr.c: Use clearer names. 2019-02-12 Akim Demaille yacc: support parse.assert While hacking on the computation of the automaton, I had yystate being equal to -1, and the parser loops. Let's catch this when parser.assert is enabled. * data/skeletons/yacc.c (YY_ASSERT): New. Use it. Not using the name YYASSERT, to make it clear that this is private. glr.c should probably move to YY_ASSERT too. Also, while at it, report 'Entering state...' even before growing the stacks. 2019-02-12 Akim Demaille examples: depend on Bison's sources * examples/c/calc/local.mk, examples/c/lexcalc/local.mk, * examples/c/mfcalc/local.mk, examples/c/rpcalc/local.mk: Regenerate the files if dependencies have changed. 2019-02-12 Eric S. Raymond README: point to README-hacking * README (Build from git): New. * README-hacking: Describe easier submodule update. 2019-02-10 Akim Demaille doc: a single space before closing comments I don't think this style: /* If buffer is full, make it bigger. */ if (i == length) { length *= 2; symbuf = (char *) realloc (symbuf, length + 1); } /* Add this character to the buffer. */ symbuf[i++] = c; /* Get another character. */ c = getchar (); or more readable than /* If buffer is full, make it bigger. */ if (i == length) { length *= 2; symbuf = (char *) realloc (symbuf, length + 1); } /* Add this character to the buffer. */ symbuf[i++] = c; /* Get another character. */ c = getchar (); Actually, I think the latter is more readable, and helps with width issues in the PDF. As a matter of fact, I would happily move to // only for single line comments. * doc/bison.texi: A single space before closing comments. 2019-02-10 Akim Demaille doc: modernize the examples * doc/bison.texi: Prefer 'fun' to 'fnct'. Reduce local variable scopes. Prefer strdup to malloc + strcpy. Avoid gratuitous casts. Use simpler names (e.g., 'name' instead of 'fname'). Avoid uses of 0 for NULL. Avoid using NULL when possible (e.g., 'p' instead of 'p != NULL'). Prefer union names to casts (e.g. 'yylval.VAR = s' instead of '*((symrec**) &yylval) = s'). Give arguments a name in fun declarations. Use our typedefs instead of duplicating them (func_t). Stop promoting an explicit $$ = $1;, it should be implicit (Bison might be able to eliminate useless chain rules). Help a bit Texinfo by making smaller groups. Rely on the C compiler to call function pointers (prefer '$1->value.fun ($3)' to (*($1->value.fnctptr))($3)'). 2019-02-10 Akim Demaille examples: add a simple infix calculator in C Currently we have no simple example: rpcalc in reverse Polish, mfcalc has functions, and lexcalc is using lex. * examples/c/calc/Makefile, examples/c/calc/calc.y, * examples/c/calc/calc.test, examples/c/calc/local.mk: New. 2019-02-10 Akim Demaille examples: fix annoying off-by-one errors * examples/extexi: Since we issue #lines only at the beginning of @example, leave empty line when removing content (such as @comment lines), otherwise the lines that follow have incorrect source line location. This leaves ugly empty lines, but they are removed when you tidy the output for the end user: sequences of \n are mapped to at most two sucessive \n. 2019-02-09 Akim Demaille style: factor printing of rules * src/gram.h, src/gram.c (rule_print): New. Use it. 2019-02-09 Akim Demaille style: use lower case for variable names * src/relation.c (INDEX, VERTICES): Rename as... (indexes, vertices): these. 2019-02-09 Akim Demaille style: scope reduction in relation.c 2019-02-09 Akim Demaille report: stop counting uselessly * src/print.c (print_nonterminal_symbols): Replace left_count and right_count with on_left and on_right. 2019-02-09 Akim Demaille report: clean up its format The format is inconsistent. For instance most sections are indented (including "Terminals unused in grammar" for instance), but the sections "Terminals, with rules where they appear" and "Nonterminals, with rules where they appear" are not. Let's indent them. Also, these two sections try to wrap the output to avoid lines too long. Yet we don't do that in the rest of the file, for instance when listing the lookaheads of an item. For instance in the case of Bison's parse-gram.output we go from: Terminals, with rules where they appear "end of file" (0) 0 error (256) 28 88 "string" (258) 9 13 16 17 20 23 24 109 116 [...] Nonterminals, with rules where they appear $accept (58) on left: 0 input (59) on left: 1, on right: 0 prologue_declarations (60) on left: 2 3, on right: 1 3 prologue_declaration (61) on left: 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25 26 27 28 29, on right: 3 [...] to Terminals, with rules where they appear "end of file" (0) 0 error (256) 28 88 "string" (258) 9 13 16 17 20 23 24 109 116 [...] Nonterminals, with rules where they appear $accept (58) on left: 0 input (59) on left: 1 on right: 0 prologue_declarations (60) on left: 2 3 on right: 1 3 prologue_declaration (61) on left: 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 25 26 27 28 29 on right: 3 [...] * src/print.c (END_TEST): Remove. (print_terminal_symbols): Don't try to wrap the output. (print_nonterminal_symbols): Likewise. Make two different lines for occurrences on the left, and occurrence on the rhs of the rules. Indent by 4 and 8, not 3. * src/reduce.c (reduce_output): Indent by 4, not 3. * tests/conflicts.at, tests/existing.at, tests/reduce.at, * tests/regression.at, tests/report.at: Adjust. 2019-02-05 Akim Demaille add LR(0) output This should not be used to generate parsers. My point is actually to facilitate debugging (when tweaking the generation of the LR(0) automaton for instance, not carying -yet- about lookaheads). * src/reader.c (prepare_percent_define_front_end_variables): Add lr(0). * src/conflicts.c (set_conflicts): Be robust to reds not having lookaheads at all. * src/ielr.c (LrType, lr_type_get): Adjust. (ielr): Implement support for LR(0). * src/lalr.c (lalr_free): Don't free LA when it's not computed. 2019-02-05 Akim Demaille style: scope reduction in derives.c * src/derives.c: here. 2019-02-05 Akim Demaille style: comment changes and refactoring in state.c * src/state.h, src/state.c: Comment changes. (transitions_to): Take a state* as argument. * src/lalr.h, src/lalr.c: Comment changes. (initialize_F): Use clear variable names. 2019-02-05 Akim Demaille tests: fix typos * tests/reduce.at: here. 2019-02-03 Akim Demaille Merge branch maint * maint: maint: post-release administrivia version 3.3.2 style: minor fixes NEWS: named constructors are preferable to symbol_type ctors gram: fix handling of nterms in actions when some are unused style: rename local variable CI: update the ICC serial number for travis-ci.org 2019-02-03 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-02-03 Akim Demaille version 3.3.2 * NEWS: Record release date. 2019-02-03 Akim Demaille style: minor fixes * NEWS, src/reduce.c, src/reduce.h: Use 'nonterminal'. Fix comments. 2019-02-03 Akim Demaille NEWS: named constructors are preferable to symbol_type ctors Reported by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00043.html 2019-02-03 Akim Demaille gram: fix handling of nterms in actions when some are unused Since Bison 3.3, semantic values in rule actions (i.e., '$...') are passed to the m4 backend as the symbol number. Unfortunately, when there are unused symbols, the symbols are renumbered _after_ the numbers were used in the rule actions. As a result, the evaluation of the skeleton failed because it used non existing symbol numbers. Which is the happy scenario: we could use numbers of other existing symbols... Reported by Balázs Scheidler. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00044.html Translating the rule actions after the symbol renumbering moves too many parts in bison. Relying on the symbol identifiers is more troublesome than it might first seem: some don't have an identifier (tokens with only a literal string), some might have a complex one (tokens with a literal string with characters special for M4). Well, these are tokens, but nterms also have issues: "dummy" nterms (for midrule actions) are named $@32 etc. which is risky for M4. Instead, let's simply give M4 the mapping between the old numbers and the new ones. To avoid confusion between old and new numbers, always emit pre-renumbering numbers as "orig NUM". * data/README: Give details about "orig NUM". * data/skeletons/bison.m4 (__b4_symbol, _b4_symbol): Resolve the "orig NUM". * src/output.c (prepare_symbol_definitions): Pass nterm_map to m4. * src/reduce.h, src/reduce.c (nterm_map): Extract it from nonterminals_reduce, to make it public. (reduce_free): Free it. * src/scan-code.l (handle_action_dollar): When referring to a nterm, use "orig NUM". * tests/reduce.at (Useless Parts): New, based Balázs Scheidler's report. 2019-02-03 Akim Demaille tests: strengthen some of them * tests/reduce.at: Check that the generated parsers are proper C. 2019-02-03 Akim Demaille package: rename data/README as data/README.md So that it is properly rendered by online git services. 2019-02-03 Akim Demaille style: reduce scopes * src/symlist.c (symbol_list_free): New. 2019-02-03 Akim Demaille style: prefer snprintf to sprintf * src/symtab.c (dummy_symbol_get): There's no need for the buffer to be so big and static. Use snprintf for safety. 2019-02-02 Akim Demaille style: comment and name changes * src/output.c (prepare_symbol_names): here. * src/reader.c: Remove obsolete comment. * src/scan-code.l: Use || for Boolean or. 2019-02-02 Akim Demaille style: comment changes * src/reader.c, src/scan-code.l: here. 2019-02-02 Akim Demaille make: regenerate the example parsers when bison changes * Makefile.am (dependencies): Also depend on Bison's sources. 2019-02-02 Akim Demaille style: rename local variable * src/reduce.c (nonterminals_reduce): Rename nontermmap as nterm_map. We will expose it. 2019-01-30 Akim Demaille gram: detect and report (in debug traces) useless chain rules A rule is a useless chain iff it's a chain (aka unit, or injection) rule (i.e., the RHS has length 1), and it's useless (it has no used defined semantic action). * src/gram.h, src/gram.c (rule_useless_chain_p): New. (grammar_dump): Report useless chain rules. * tests/sets.at: Check the traces. 2019-01-30 Akim Demaille lr(0): more debug traces * src/lr0.c (core_print, kernel_print): New. Use them. 2019-01-30 Akim Demaille lr(0): remove useless conditional * src/lr0.c (new_itemsets): There's no harm in setting a Boolean several times. 2019-01-30 Akim Demaille style: sort includes and avoid assignments * src/symtab.c: Sort includes. * src/gram.c (grammar_rules_print_xml): Avoid assignments to define 'usefulness'. 2019-01-30 Akim Demaille style: use item_rule * src/print-graph.c, src/print-xml.c: here. 2019-01-30 Akim Demaille gram: factor the printing of items and the computation of their rule There are several places where we need to recover the rule from an item, let's factor that into item_rule. We also want to print items in a nice way: we do it when generating the *output file, but it is also useful in debug messages. * src/gram.h, src/gram.c (item_rule, item_print): New. * src/print.c (print_core): Use them. * src/state.h, src/state.c: Propagate constness. 2019-01-30 Akim Demaille style: scope reduction in print-xml * src/print-xml.c: here. 2019-01-30 Akim Demaille tests: check XML and dot reports * tests/report.at: Here. 2019-01-28 Akim Demaille CI: update the ICC serial number for travis-ci.org On travis-ci.org, there are five concurrent slaves, instead of three on travis-ci.com. 2019-01-28 Akim Demaille CI: update the ICC serial number for travis-ci.org On travis-ci.org, there are five concurrent slaves, instead of three on travis-ci.com. 2019-01-28 Akim Demaille style: comment changes * src/lr0.c, src/state.c, src/state.h: here. 2019-01-28 Akim Demaille closure: initialize it once for all The memory allocated by 'closure' (and some data such as 'fderives') is used to computed a state's full itemset from its core. This is needed during the construction of the LR(0) automaton, and the memory is reclaimed immediately afterwards. Unfortunately the reports (graph, text, xml) also need this information when describing the states with their full itemsets. As a consequence the memory was allocated again, fderives computed again too, and more --trace reports are generated which only duplicate what was already reported. Stop that. It does mean that we release the memory later (hence the peak memory usage is higher now), but I don't think that's a problem today. * src/lr0.c (generate_states): Don't call closure_free. * src/state.c (states_free): Do it here. (for symmetry with closure_new which is called in generate_states). * src/print-graph.c, src/print-xml.c, src/print.c: You can now expect the closure module to be functional. 2019-01-28 Akim Demaille style: rename closure_* functions as closure_* This is more consistent with the other files. * closure.h, closure.c (new_closure, free_closure): Rename as... (closure_new, closure_free): this. Adjust dependencies. 2019-01-28 Akim Demaille lr0: use a bitset for the set of "shiftable symbols" This will make it easier to add new elements (that might already be part of shift_symbol) without having to worry about the size of shift_symbol (which is currently a fixed size vector). I could not measure any significant differences in performances in the generation of LR(0) automaton (benched on gramamrs of Ruby, C, and C++). * src/lr0.c (shift_symbol): Make it a bitset. 2019-01-28 Akim Demaille add -fsyntax-only When debugging Bison itself, this is very handy, especially when tweaking the frontend badly enough to break the backends. It can also be used to check a grammar. * src/getargs.h, src/getargs.c (feature_syntax_only): New. (feature_args, feature_types): Adjust. * src/main.c (main): Use it. 2019-01-27 Akim Demaille style: beware of collisions on status * src/symtab.h (status): Rename as... (declaration_status): this, to avoid colliding with status, the argument of 'usage'. 'status' seems a tad too general to be used only here. 2019-01-27 Akim Demaille gnulib: update 2019-01-27 Akim Demaille usage: document -ffixit * src/getargs.c (usage): Document -ffixit. Document the aliases of -f. 2019-01-27 Akim Demaille style: reduce scopes in state.c and ielr.c 2019-01-27 Akim Demaille Merge branch 'maint' * maint: maint: post-release administrivia version 3.3.1 yacc: issue warnings, not errors, for Bison extensions style: formatting changes in NEWS and complain.c tests: don't depend on the user's definition of SHELL 2019-01-27 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-01-27 Akim Demaille version 3.3.1 * NEWS: Record release date. 2019-01-27 Akim Demaille yacc: issue warnings, not errors, for Bison extensions Reported by Kiyoshi Kanazawa. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00029.html * src/getargs.c (getargs): Let --yacc imply -Wyacc, not -Werror=yacc. * tests/input.at: Adjust. * doc/bison.tex (Bison Options): Document. 2019-01-27 Akim Demaille style: formatting changes in NEWS and complain.c 2019-01-27 Kiyoshi Kanazawa tests: don't depend on the user's definition of SHELL http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00031.html * examples/test (SHELL): Set it to /bin/sh. 2019-01-26 Akim Demaille traces: always print the reduced grammar and fix it * src/gram.c (grammar_dump): Print the effective number first instead of last. And fix it (remove the incorrect "+1"). Use t/f for Booleans. * src/reduce.c: When asked, always print the reduced grammar, even if there was nothing useless. * tests/sets.at (Reduced Grammar): Check that. 2019-01-26 Akim Demaille style: rename LR0.* as lr0.* Let's stick to lower case for file names. * src/LR0.h, src/LR0.c: Rename as... * src/lr0.h, src/lr0.c: these. 2019-01-26 Akim Demaille style: rename print_graph.* as print-graph.* These are the only files with _. * src/print_graph.h, src/print_graph.c: Rename as... * src/print-graph.h, src/print-graph.c: these. 2019-01-26 Akim Demaille style: various fixes * src/gram.c: Use consistent variable names. Prefix prefix unary operators. (grammar_dump): Use rule_rhs_length instead of duplicating it. * src/reduce.c: Avoid useless variables. 2019-01-26 Akim Demaille style: comment changes in gram.h * src/gram.h: Shorten comments. 2019-01-26 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-01-26 Akim Demaille version 3.3 * NEWS: Record release date. 2019-01-26 Akim Demaille NEWS: update 2019-01-26 Akim Demaille c++: fix comment * data/skeletons/c++.m4: here. 2019-01-26 Akim Demaille style: formatting changes * data/skeletons/lalr1.cc: Add dnl. * data/skeletons/bison.m4: Comment the use of dnl. 2019-01-26 Akim Demaille tests: run the printer/destructor test on glr.cc * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust for glr.cc, and use it. 2019-01-24 Akim Demaille gnulib: update 2019-01-22 Akim Demaille --update: when used, do not generate the output files It is inconvenient that we also generate the output files when we update the grammar file, and it's somewhat unexpected. Let's not do that. * src/main.c (main): Skip generation when --update is passed. * src/getargs.c (usage): Update the help message. * doc/bison.texi (Bison Options): Likewise. * tests/input.at: Check that we don't generate the output. 2019-01-22 Akim Demaille diagnostics: let redundant definitions be only warnings After all, this is clearly harmless. * src/muscle-tab.c (muscle_percent_define_insert): Let equal definitions of a %define variable be only a warning. Adjust test cases. 2019-01-22 Akim Demaille tests: improve check for updated variable names * tests/input.at ("%define" backward compatibility): Don't define twice "api.namespace", so that we don't get an error, which stops the process too soon to see an error about the value given to 'lr.keep-unreachable-state'. 2019-01-21 Akim Demaille diagnostics: remove redundancy Don't repeat the name of the warning in the sub messages. E.g., remove the second "[-Wother]" in the following message foo.y:2.1-27: warning: %define variable 'parse.error' redefined [-Wother] %define parse.error verbose ^~~~~~~~~~~~~~~~~~~~~~~~~~~ foo.y:1.1-27: previous definition [-Wother] %define parse.error verbose ^~~~~~~~~~~~~~~~~~~~~~~~~~~ * src/complain.c (error_message): Don't print the warning type when it's indented. Adjust test cases. 2019-01-20 Akim Demaille c++: better "scope" a workaround for GCC * data/skeletons/lalr1.cc: Enable it only for GCC 4.8 and before. 2019-01-20 Akim Demaille c++: address -Wweak-vtables warnings Reported by Derek Clegg http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00021.html aux/parser-internal.h:429:12: error: 'syntax_error' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit [-Werror,-Wweak-vtables] struct syntax_error : std::runtime_error To avoid this warning, we need syntax_error to have a virtual function defined in a compilation unit. Let it be the destructor. To comply with C++98, this dtor should be 'throw()'. Merely making YY_NOEXCEPT be 'throw()' in C++98 triggers errors (http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00022.html), so let's introduce YY_NOTHROW and flag only ~syntax_error with it. Also, since we now have an explicit dtor, we need to provide an copy ctor. * configure.ac (warn_cxx): Add -Wweak-vtables. * data/skeletons/c++.m4 (YY_NOTHROW): New. (syntax_error): Declare the dtor, and define the copy ctor. * data/skeletons/glr.cc, data/skeletons/lalr1.cc (~syntax_error): Define. 2019-01-20 Akim Demaille style: prefer bool to char * src/state.h, src/state.c (state::consistent): Make it a bool. Adjust dependencies. 2019-01-20 Akim Demaille glr.cc: be more alike lalr1.cc 2019-01-20 Akim Demaille style: formatting changes * data/skeletons/c++.m4: Un-remove an end-of-line. 2019-01-20 Akim Demaille NEWS: fixes 2019-01-19 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-01-19 Akim Demaille version 3.2.91 * NEWS: Record release date. 2019-01-18 Akim Demaille style: various fixes Some reported by syntax-check. * po/POTFILES.in: Add fixits.cc. * src/muscle-tab.c: Don't cast for free. * src/files.c: Reduce scopes. * cfg.mk: We need the cast for free in muscle_percent_define_insert. 2019-01-18 Akim Demaille doc: document -ffixit and --update * doc/bison.texi (Bison Options): here. 2019-01-18 Akim Demaille doc: style fixes * doc/bison.texi: Use @kbd where appropriate. Update ^~~~ marks for caret-errors. * build-aux/cross-options.pl: Do not add quotes to %define's argument. 2019-01-18 Akim Demaille NEWS: update for fixits and --update 2019-01-17 Akim Demaille fixits: handle duplicates of %name-prefix The test case "Deprecated directives" (currently 56) no longer emits warnings after 'bison -u'! * src/files.h, src/files.c (spec_name_prefix_loc): New. * src/parse-gram.y (handle_name_prefix): Emit fixits for duplicate %name-prefix. * tests/input.at (Deprecated directives): Adjust. 2019-01-17 Akim Demaille regen 2019-01-17 Akim Demaille fixits: handle %file-prefix * src/files.h, src/files.c (spec_file_prefix_loc): New. * src/scan-gram.l (%file-prefix): Delegate diagnostics to... * src/parse-gram.y (handle_file_prefix): here. * src/complain.c (duplicate_directive): Quote the directive. * tests/input.at: Adjust. 2019-01-17 Akim Demaille fixits: handle per-rule duplicates * src/complain.c (duplicate_rule_directive): Here. * tests/actions.at (Invalid uses of %empty): Check it. 2019-01-17 Akim Demaille fixits: fix warnings about duplicates * src/complain.c (duplicate_directive): Fix the complaint level. * tests/input.at: Adjust. 2019-01-16 Akim Demaille diagnostics: properly indent the "previous declaration" message * src/complain.c (duplicate_directive, duplicate_rule_directive): Here. 2019-01-16 Akim Demaille regen 2019-01-16 Akim Demaille style: rename some functions for consistency "handle_" is the prefix used in scan-code.l for instance. * src/parse-gram.y (do_error_verbose, do_name_prefix, do_require) (do_skeleton, do_yacc): Rename as... (handle_error_verbose, handle_name_prefix, handle_require) (handle_skeleton, handle_yacc): these. 2019-01-16 Akim Demaille fixits: report duplicate %yacc directives We should use -ffixit and --update to clean files with duplicate directives. And we should complain only once about duplicate obsolete directives: keep only the "duplicate" warning. Let's start with %yacc. For instance on: %fixed-output_files %fixed-output-files %yacc %% exp: This run of bison: $ bison /tmp/foo.y -u foo.y:1.1-19: warning: deprecated directive, use '%fixed-output-files' [-Wdeprecated] %fixed-output_files ^~~~~~~~~~~~~~~~~~~ foo.y:2.1-19: warning: duplicate directive [-Wother] %fixed-output-files ^~~~~~~~~~~~~~~~~~~ foo.y:1.1-19: previous declaration %fixed-output_files ^~~~~~~~~~~~~~~~~~~ foo.y:3.1-5: warning: duplicate directive [-Wother] %yacc ^~~~~ foo.y:1.1-19: previous declaration %fixed-output_files ^~~~~~~~~~~~~~~~~~~ bison: file 'foo.y' was updated (backup: 'foo.y~') gives: %fixed-output-files %% exp: * src/location.h, src/location.c (location_empty): New. * src/complain.h, src/complain.c (duplicate_directive): New. * src/getargs.h, src/getargs.c (yacc_flag): Instead of a Boolean, be the location of the definition. Update dependencies. * src/scan-gram.l (%yacc, %fixed-output-files): Move the handling of its warnings to... * src/parse-gram.y (do_yacc): This new function. * tests/input.at (Deprecated Directives): Adjust expectations. 2019-01-16 Akim Demaille style: rename duplicate_directive as duplicate_rule_directive * src/complain.h, src/complain.c: here. Adjust callers. 2019-01-16 Akim Demaille fixits: suggest running --update if there are fixits * src/fixits.h, src/fixits.c (fixits_empty): New. * src/complain.c (deprecated_directive): Register the Wdeprecated fixits only if -Wdeprecated was enabled, so that we don't apply updates if the user didn't ask for them. * src/main.c (main): If there were fixits, issue a warning suggesting running with --update. Free uniqstrs after the fixits, since the latter use the former. * tests/headers.at, tests/input.at: Update expectations. 2019-01-16 Akim Demaille fixits: avoid generating empty lines * src/fixits.c (fixits_run): If erase the content of a line, also erase the following \n. * tests/input.at (Deprecated directives): Update expectations. 2019-01-15 Akim Demaille configure: don't try to run C++ warnings on C Reported by Derek Clegg. https://lists.gnu.org/archive/html/bison-patches/2019-01/msg00066.html * configure.ac: here. 2019-01-15 Akim Demaille c, c++: avoid implicit fall-throw Reported by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00004.html * configure.ac (warn_common): Add -Wimplicit-fallthrough. This does trigger failures in the test suite. * data/skeletons/glr.c, data/skeletons/lalr1.cc, * data/skeletons/yacc.c, tests/c++.at: Make fall-throws explicit. 2019-01-15 Akim Demaille c++: avoid -Wundefined-func-template warnings from clang Reported by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00006.html Clang does not like this: template struct basic_symbol : D { basic_symbol(); }; struct by_type {}; struct symbol_type : basic_symbol { symbol_type(){} }; It gives: $ clang++-mp-7.0 -Wundefined-func-template foo.cc -c foo.cc:11:3: warning: instantiation of function 'basic_symbol::basic_symbol' required here, but no definition is available [-Wundefined-func-template] symbol_type(){} ^ foo.cc:4:3: note: forward declaration of template entity is here basic_symbol(); ^ foo.cc:11:3: note: add an explicit instantiation declaration to suppress this warning if 'basic_symbol::basic_symbol' is explicitly instantiated in another translation unit symbol_type(){} ^ 1 warning generated. The same applies for the basic_symbol's destructor and `clear()`. * configure.ac (warn_cxx): Add -Wundefined-func-template. This triggered one failure in the test suite: * tests/headers.at (Sane headers): here, where we check that we can compile the generated headers in other compilation units than the parser's. Add a variant type to make sure that basic_symbol and symbol_type are properly generated in this case. * data/skeletons/c++.m4 (basic_symbol): Inline the definitions of the destructor and of `clear` in the class definition. 2019-01-14 Akim Demaille Revert the last two commits They should not have been pushed, sorry about that. This reverts - commit 8575bd06ae6e65f3a30b21a3e022a968e4c7ae7a. - commit 55bf52860eac5c1394dc344a691220272df32b09. 2019-01-14 Akim Demaille c++: avoid warnings about extraneous semi-colons Reported by Derek Clegg. * configure.ac (warn_common): Add -Wextra-semi. * data/skeletons/c++.m4: Remove extraneous semi-colon. 2019-01-14 Akim Demaille WIP 2019-01-14 Akim Demaille diagnostics: add fixit support for duplicate removal * src/muscle-tab.c (muscle_percent_define_insert): Register a fixit for duplicate removal. * tests/input.at: Adjust expectations. 2019-01-14 Akim Demaille regen 2019-01-14 Akim Demaille diagnostics: improve the accuracy for %error-verbose Avoid duplicate warnings about %error-verbose, once for deprecation, another for duplicate. Keep only the duplicate warning for the second occurrence of %error-verbose. This will help removal fixits. * src/scan-gram.l (%error-verbose): Return as a PERCENT_ERROR_VERBOSE token. * src/parse-gram.y (do_error_verbose): New. Use it. * src/muscle-tab.c (muscle_percent_variable_update): Handle pseudo variables such as %error-verbose. 2019-01-14 Akim Demaille diagnostics: avoid duplicate warnings for deprecated directives Currently, on %define parser_class_name "Parser" %define parser_class_name "Parser" %% exp:; we issue: foo.y:1.9-25: warning: deprecated directive, use '%define api.parser.class {Parser}' [-Wdeprecated] %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~ foo.y:2.9-25: warning: deprecated directive, use '%define api.parser.class {Parser}' [-Wdeprecated] %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~ foo.y:2.9-25: error: %define variable 'api.parser.class' redefined %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~ foo.y:1.9-25: previous definition %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~ Let's get rid of the second warning about the deprecated variable parser_class_name. This is noise, but it will also be a problem with fixits for removing duplicates, as we will first generate the update, and then it's too late to remove it: fixits do not edit the result of previous fixits. So generate this instead: foo.y:1.1-34: warning: deprecated directive, use '%define api.parser.class {Parser}' [-Wdeprecated] %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ foo.y:2.1-34: error: %define variable 'api.parser.class' redefined %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ foo.y:1.1-34: previous definition %define parser_class_name "Parser" ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * src/muscle-tab.c (muscle_percent_variable_update): Pass the warning to the caller, instead of issuing it. (muscle_percent_define_insert): Issue this warning only if we don't have to complain about a duplicate definition. * tests/input.at: Adjust expectations. 2019-01-14 Akim Demaille diagnostics: update the grammar file Let's use the fixits to actually update the grammar files. * src/getargs.h, src/getargs.c (update_flag): New. * src/fixits.h, src/fixits.c (fixits_run): New. * src/main.c (main): Invoke fixits_run when --update is passed. * tests/input.at (Deprecated directives): Check --update. 2019-01-14 Akim Demaille diagnostics: improve accuracy for deprecated %define variables * src/parse-gram.y: Use the location of the whole definition to record the location of a %define variable, instead of just the name of the variable. Adjust tests. 2019-01-14 Akim Demaille diagnostics: keep the fixits Introduce proper support for fixits, instead of just printing them on demand. * bootstrap.conf: We need gnulib's xlists. * src/fixits.h, src/fixits.c: New. * src/complain.c (deprecated_directive): Use fixits_register. * src/main.c (main): Use fixits_free. 2019-01-14 Akim Demaille diagnostics: add -ffixit support for deprecated features Issue directives for IDE/editors to fix the source file. http://clang.llvm.org/docs/UsersManual.html#cmdoption-fdiagnostics-parseable-fixits Do it for deprecated features. For instance: $ cat foo.y %error-verbose %name-prefix = "foo" %name-prefix="bar" %define parser_class_name "Parser" %% exp:; $ LC_ALL=C ./_build/8d/tests/bison -ffixit /tmp/foo.yy /tmp/foo.yy:1.1-14: warning: deprecated directive, use '%define parse.error verbose' [-Wdeprecated] %error-verbose ^^^^^^^^^^^^^^ fix-it:"/tmp/foo.yy":{1:1-1:15}:"%define parse.error verbose" /tmp/foo.yy:3.1-20: warning: deprecated directive, use '%define api.prefix {foo}' [-Wdeprecated] %name-prefix = "foo" ^^^^^^^^^^^^^^^^^^^^ fix-it:"/tmp/foo.yy":{3:1-3:21}:"%define api.prefix {foo}" /tmp/foo.yy:4.1-18: warning: deprecated directive, use '%define api.prefix {bar}' [-Wdeprecated] %name-prefix="bar" ^^^^^^^^^^^^^^^^^^ fix-it:"/tmp/foo.yy":{4:1-4:19}:"%define api.prefix {bar}" /tmp/foo.yy:5.9-25: warning: deprecated directive, use '%define api.parser.class {Parser}' [-Wdeprecated] %define parser_class_name "Parser" ^^^^^^^^^^^^^^^^^ fix-it:"/tmp/foo.yy":{5:9-5:26}:"%define api.parser.class {Parser}" /tmp/foo.yy:5.9-25: error: %define variable 'api.parser.class' is not used %define parser_class_name "Parser" ^^^^^^^^^^^^^^^^^ * src/getargs.h, src/getargs.c (feature_fixit_parsable): New. (feature_types, feature_args): Use it. * src/complain.c (deprecated_directive): Use it. * tests/input.at: Check it. 2019-01-14 Akim Demaille diagnostics: prefer ^~~~ to ^^^^ to underline code That's what both GCC and Clang do, and it is indeed much nicer to read. From: foo.y:1.1-14: warning: deprecated directive, use '%define parse.error verbose' [-Wdeprecated] %error-verbose ^^^^^^^^^^^^^^ foo.y:4.1-20: warning: deprecated directive, use '%define api.prefix {foo}' [-Wdeprecated] %name-prefix = "foo" ^^^^^^^^^^^^^^^^^^^^ to: foo.y:1.1-14: warning: deprecated directive, use '%define parse.error verbose' [-Wdeprecated] %error-verbose ^~~~~~~~~~~~~~ foo.y:4.1-20: warning: deprecated directive, use '%define api.prefix {foo}' [-Wdeprecated] %name-prefix = "foo" ^~~~~~~~~~~~~~~~~~~~ * src/location.c (location_caret): Use ^~~~. Adjust tests expectations. 2019-01-14 Akim Demaille regen 2019-01-14 Akim Demaille diagnostics: improve them for %name-prefix Currently the diagnostics for %name-prefix are not precise enough. In particular, they does not show that braces must be used instead of quotes. Before: foo.y:3.1-14: warning: deprecated directive, use '%define api.prefix' [-Wdeprecated] %name-prefix = "foo" ^^^^^^^^^^^^^^ After: foo.y:3.1-20: warning: deprecated directive, use '%define api.prefix {foo}' [-Wdeprecated] %name-prefix = "foo" ^^^^^^^^^^^^^^^^^^^^ To do this we need the value passed to %name-prefix, so move the warning from the scanner to the parser. Accuracy will be very important for the forthcoming changes. * src/parse-gram.y (do_name_prefix): New. (PERCENT_NAME_PREFIX): Have a semantic value: the raw source, with possibly underscores, equal sign, and spaces. This is used to provide a more accurate message. It does not take comments into account, but... * src/scan-gram.l (%name-prefix): Delegate the warnings to the parser. * tests/headers.at, tests/input.at: Adjust expectations. 2019-01-14 Akim Demaille diagnostics: style: avoid allocating memory when not needed * src/muscle-tab.c (muscle_percent_variable_update): Avoid allocating memory when it is not needed, which should be most of the time (when there's no update to perform). Adjust callers. 2019-01-14 Akim Demaille c++: avoid warnings about extraneous semi-colons Reported by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00005.html * configure.ac (warn_cxx): Add -Wextra-semi. * data/skeletons/c++.m4: Remove extraneous semi-colon. 2019-01-13 Akim Demaille style: minor changes * src/muscle-tab.c: Sort alphabetically. * src/scan-gram.l: Reduce scopes. Initialize variables. 2019-01-13 Akim Demaille c++: beware of -Wshadow This line: slice slice (yystack_, yylen); triggers warnings: parse.h:1790:11: note: shadowed declaration is here Reported by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2019-01/msg00002.html * configure.ac (warn_c): Move -Wshadow to... (warn_common): here. * data/skeletons/stack.hh (slice): Define as an inner class of stack. * data/skeletons/lalr1.cc: Adjust. Rename the variable as 'range' instead of 'slice'. 2019-01-12 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2019-01-12 Akim Demaille version 3.2.90 * NEWS: Record release date. 2019-01-12 Akim Demaille yacc: fix relocatability * src/yacc.in (prefix): Define it, as it's typically needed for exec_prefix. 2019-01-12 Akim Demaille syntax-check: adjust paths * cfg.mk: here. (require_config_h): New. 2019-01-12 Akim Demaille style: formatting clean up * data/skeletons/d.m4, examples/d/calc.y, src/output.c, * src/parse-gram.y: No tab, no trailing spaces. Reported by syntax-check. 2019-01-12 Akim Demaille po: remove bitset/stats.c * po/POTFILES.in: here. 2019-01-12 Akim Demaille tests: fix usage of AT_PARSER_CHECK The parser must be the first command. Caught by syntax-check. * tests/c++.at: here. 2019-01-12 Akim Demaille gnulib: update 2019-01-12 Akim Demaille NEWS: update 2019-01-12 Akim Demaille style: isolate the creation of tname in a function * src/output.c (prepare_symbol_names): New. Use it. 2019-01-12 Akim Demaille tests: formatting changes * tests/input.at, tests/regression.at: here. 2019-01-05 Akim Demaille doc: use @option consistently * doc/bison.texi: Use @option, not @code, for options. 2019-01-05 Akim Demaille yacc.c: avoid negated if * data/skeletons/yacc.c: Prefer a "direct" conditional. 2019-01-05 Akim Demaille package: bump copyrights to 2019 2019-01-05 Akim Demaille java/d: rename some %define variables for consistency See 890ee8a1fd288b3cc1c21c49ea0ece696ef40565 and https://lists.gnu.org/archive/html/bison-patches/2019-01/msg00024.html. * data/skeletons/d.m4, data/skeletons/java.m4 (abstract, annotations, extends, final, implements, public, strictfp): Rename as... (api.parser.abstract, api.parser.annotations, api.parser.extends) (api.parser.final, api.parser.implements, api.parser.public) (api.parser.strictfp): these. * src/muscle-tab.c (muscle_percent_variable_update): Ensure backward compatibility. * doc/bison.texi, examples/d/calc.y, examples/java/Calc.y, tests/input.at: Adjust. 2019-01-05 Akim Demaille java/d: remove useless macros There are many macros that are defined and used just once (b4_public_if, b4_abstract_if, etc.). That's overkill. Rather, let's define a macro to build the "public class YYParser" line. It appears that the same syntax with "extends", "abstract", etc. is implemented in the D parser, which looks very fishy... * data/skeletons/d.m4, data/skeletons/java.m4 (b4_public_if) (b4_abstract_if, b4_final_if, b4_strictfp_if): Replace with (b4_parser_class_declaration): this. * data/skeletons/lalr1.d, data/skeletons/lalr1.java: Adjust. 2019-01-05 Akim Demaille style: clean tests * tests/named-refs.at: here. 2019-01-05 Akim Demaille gnulib: update In particular, report uninitialized submodules instead of breaking symlinks. For reports, see https://lists.gnu.org/archive/html/bug-bison/2011-05/msg00012.html https://lists.gnu.org/archive/html/help-bison/2018-12/msg00034.html For a fix, see https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00024.html 2019-01-05 Akim Demaille glr.cc: fix the handling of syntax_error from the scanner Commit 90a8537e6287f92fb3d5be0258a69247a742f12e was right, but issued two error messages. Commit 80ef7e7639f99618bee490b2dea02b5fd9ab28e5 tried to address that by mapping yychar and yytoken to empty, but that completely breaks the invariants of glr.c. In particular, yygetToken can be called repeatedly and is expected to return the latest result, unless yytoken is YYEMPTY. Since the previous attempt was "recording" that the token was coming from an exception by setting it to YYEMPTY, instead of getting again the faulty token, we fetched another one. Rather, revert to the first approach: map yytoken to "invalid token", but record in yychar the fact that we come from an exception thrown in the scanner. * data/skeletons/glr.c (YYFAULTYTOK): New. (yygetToken): Use it to record syntax errors from the scanner. * tests/c++.at (Syntax error as exception): In addition to checking syntax_error with error recovery, make sure it also behaves as expected without. 2019-01-03 Akim Demaille clearly deprecate %name-prefix * src/scan-gram.l (%name-prefix): Issue a deprecation warning. * tests/calc.at, tests/headers.at, tests/input.at, tests/java.at, * tests/javapush.at, tests/local.at: Adjust expectations. Or disable -Wdeprecated. * doc/bison.texi: Document that %name-prefix is replaced by %define api.prefix. 2019-01-03 Akim Demaille examples: clean up the Java/D examples * examples/java/Calc.y: Fix indentation. Sort. Don't use %name-prefix, since api.parser.class is already defined. * examples/d/calc.y: Likewise. 2019-01-03 Akim Demaille doc: formatting changes * doc/bison.texi: here. 2019-01-02 Akim Demaille rename parser_class_name as api.parser.class The previous name was historical and inconsistent. * src/muscle-tab.c (define_directive): Use the proper value passing syntax, based on the muscle kind. (muscle_percent_variable_update): Use the right value passing syntax. Migrate from parser_class_name to api.parser.class. * data/skeletons: Migrate from parser_class_name to api.parser.class. * doc/bison.texi (%define Summary): Document both parser_class_name and api.parser.class. Promote the latter over the former. 2019-01-02 Akim Demaille style: formatting changes * src/scan-gram.l: Here. 2019-01-02 Akim Demaille style: glr.c: prefer returning a value rather than passing pointers This is very debatable. This function is not pure at all, so it could stick to returning void: that's a common coding style to tell the difference between "real" (pure) functions and side-effecting subroutines. However, we already have this style elsewhere (e.g., yylex), and I feel the callers are somewhat nice to read this way. * data/skeletons/glr.c (yygetLRActions): Return the action rather than passing by pointer. While at it, fix type of yytoken. Adjust callers. 2019-01-02 Akim Demaille glr.cc: don't issue two error messages when syntax_error is thrown Reported by Askar Safin. https://lists.gnu.org/archive/html/bison-patches/2019-01/msg00000.html * data/skeletons/glr.c (yygetToken): Return YYEMPTY when an exception is thrown. * data/skeletons/lalr1.cc: Log when an exception is caught. * tests/c++.at (Syntax error as exception): Be sure to recover from error before triggering another error. 2019-01-02 Akim Demaille skeletons: shorten b4_parser_class_name to b4_parser_class * skeletons/c++.m4, skeletons/d.m4, skeletons/glr.c, skeletons/glr.cc, * skeletons/java.m4, skeletons/lalr1.cc, skeletons/lalr1.d, * skeletons/lalr1.java: Here. 2019-01-02 Akim Demaille glr.cc: remove duplicate definition of YYLLOC_DEFAULT It's already provided by glr.c. * data/skeletons/glr.cc (b4_post_prologue): Here. 2019-01-02 Akim Demaille style: sort includes in scanners * src/scan-code.l, src/scan-gram.l, src/scan-skel.l: Reorder includes. 2019-01-02 Akim Demaille style: formatting changes in the doc * doc/bison.texi: here. 2019-01-02 Akim Demaille style: remove stray empty lines * data/skeletons/glr.c, data/skeletons/glr.cc: here. * data/skeletons/bison.m4 (b4_glr_cc_if): Move it here. 2018-12-31 Akim Demaille glr.cc: support syntax_error exceptions Kindly requested by Аскар Сафин (Askar Safin). http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00033.html * data/skeletons/glr.c (b4_glr_cc_if): New. Use it. (yygetToken): Catch syntax_errors. * data/skeletons/glr.cc (YY_EXCEPTIONS): New. * tests/c++.at: Check it. 2018-12-31 Akim Demaille glr.c: factor the calls to yylex The call protocol of yylex is quite complex, and repeated three times. Let's factor it. * data/skeletons/glr.c (yygetToken): New. Use it. 2018-12-31 Akim Demaille style: reduce scopes in glr.c * data/skeletons/glr.c (yyrecoverSyntaxError): here. 2018-12-30 Akim Demaille tests: refactor 2018-12-30 Akim Demaille c++: inline the implementation of syntax_error in its definition This way, it is easier to make sure its implementation is available in glr.cc too, which is not the case currently. * data/skeletons/c++.m4 (b4_public_types_define): Move the implementation of syntax_error... (b4_public_types_declare): here. 2018-12-29 Akim Demaille style: formatting changes * tests/input.at: here. 2018-12-29 Akim Demaille symbol: don't crash on symbol without content When running with --trace=parse, we may crash. * src/symtab.c (symbol_print): Avoid that. 2018-12-28 Akim Demaille README-hacking: update 2018-12-28 Akim Demaille reader: get rid of a useless function Useless since 58d7a1a1c7497ba51a35fcf991c5b047f692fe18 (2006). * src/parse-gram.y, src/reader.h (token_name): Remove, unused. 2018-12-27 Akim Demaille parsers: fix minor stylistic issues * data/skeletons/variant.hh (b4_token_constructor_declare): Remove, unused since the previous commit. Fix indentation issues. * data/skeletons/c++.m4: Fix indentation issues. 2018-12-27 Akim Demaille c++: check several parsers in the same program * tests/local.at (AT_LOCATION_TYPE_IF): Turn into... (AT_LOCATION_TYPE_SPAN_IF): this. Adjust dependencies. * tests/headers.at (Several parsers): Add another C++ parser, which uses the first C++ parser's locations. 2018-12-26 Akim Demaille c++: variants: fuse declarations and definitions We used to create a short definition of yy::parser with all the implementations of its member functions outside. But yy::parser is no longer short and simple to read. Maintaining each function twice is painful: a lot of redundancy but different indentation levels, output which depends on whether we are in a header or not (see d132c2d5455135f63a7497c38358eadd6e3a6af8), etc. Let's simplify this and put the implementations into the class definition itself. Discussed in this monologue: https://lists.gnu.org/archive/html/bison-patches/2018-12/msg00058.html. * data/skeletons/c++.m4, data/skeletons/lalr1.cc, * data/skeletons/variant.hh (b4_basic_symbol_constructor_define) (_b4_token_constructor_declare, b4_token_constructor_declare) Merge into... (b4_basic_symbol_constructor_define, _b4_token_constructor_define) (b4_token_constructor_define): these. 2018-12-26 Akim Demaille examples: fix dependencies Commit 112ccb5ed73ba5c64b0b5300d8b9b686f02f094c moved the skeletons from dist_pkgdata_DATA to dist_skeletons_DATA, hence broke the dependencies. * Makefile.am (dependencies): New. Use it where appropriate. 2018-12-26 Akim Demaille c++: move stack inside yy::parser We used to define such auxiliary structures outside the class, mainly as a matter of style to keep the definition of yy::parser short and simple. However, now there's a lot more code generated inside the class definition (e.g., all the token constructors), so the readability no longer applies. However, if we move stack (and slice) inside yy::parser, then it should no longer be needed to change the namespace to have multiple parsers: changing the class name should suffice. One common argument against inner classes is that they code bloat. It hardly applies here, since typically different parsers will have different semantic value types, hence different actual stack types. * data/skeletons/lalr1.cc: Invoke b4_stack_define inside yy::parser. 2018-12-25 Akim Demaille package: make bison a relocatable package Suggested by David Barto https://lists.gnu.org/archive/html/help-bison/2015-02/msg00004.html and Victor Zverovich. https://lists.gnu.org/archive/html/bison-patches/2018-10/msg00121.html This is very easy to do, thanks to work by Bruno Haible in gnulib. See "Supporting Relocation" in gnulib's documentation. * bootstrap.conf: We need relocatable-prog and relocatable-script (for yacc). * src/yacc.in: New. * configure.ac, src/local.mk: Instantiate it. * src/main.c, src/output.c (main, pkgdatadir): Use relocatable2. * doc/bison.texi (FAQ): Document it. 2018-12-25 Akim Demaille README: wrap paragraphs 2018-12-25 Akim Demaille gnulib: update 2018-12-25 Akim Demaille package: move skeletons into data/skeletons * data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-like.m4, * data/c-skel.m4, data/c.m4, data/d-skel.m4, data/d.m4, data/glr.c, * data/glr.cc, data/java-skel.m4, data/java.m4, data/lalr1.cc, * data/lalr1.d, data/lalr1.java, data/location.cc, data/stack.hh, * data/variant.hh, data/yacc.c: Move to... * data/skeletons: here. Use b4_skeletonsdir instead of b4_pkgdatadir. * data/local.mk, src/output.c: Adjust. 2018-12-24 Akim Demaille c++: style: use consistently this/that instead of this/other * data/lalr1.cc, data/variant.hh: here. 2018-12-24 Akim Demaille c++: also provide a copy constructor for symbol_type Suggested by Wolfgang Thaller. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00081.html * data/c++.m4 (basic_symbol, by_type): Instead of provide either move or copy constructor, always provide the copy one. * tests/c++.at (C++ Variant-based Symbols Unit Tests): Check it. 2018-12-24 Akim Demaille c++: fix double free when a symbol_type was moved Currently the following piece of code crashes (with parse.assert), because we don't record that s was moved-from, and we invoke its dtor. { auto s = parser::make_INT (42); auto s2 = std::move (s); } Reported by Wolfgang Thaller. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00077.html * data/c++.m4 (by_type): Provide a move-ctor. (basic_symbol): Be sure not to read a moved-from value. * tests/c++.at (C++ Variant-based Symbols Unit Tests): Check this case. 2018-12-24 Akim Demaille c++: style: improve tests * tests/c++.at (C++ Variant-based Symbols Unit Tests): Provide better assertions. Use them. Avoid useless Bison invocations. 2018-12-24 Akim Demaille c++: style: use consistently this/that instead of this/other * data/c++.m4: here. 2018-12-23 Akim Demaille tests: fixes * tests/c++.at: Use AT_YYLEX_PROTOTYPE etc. Which requires that we use the same argument names (lvalp, etc.). * tests/local.at (AT_NAME_PREFIX): Fix regex. 2018-12-22 Akim Demaille c++: style: rename a few macros for clarity * data/c++.m4, data/lalr1.cc, data/variant.hh: s/b4_symbol_constructor/b4_token_constructor/g, as this is really what is being defined. 2018-12-22 Akim Demaille c++: exhibit a safe symbol_type Instead of introducing make_symbol (whose name, btw, somewhat infringes on the user's "name space", if she defines a token named "symbol"), let's make the construction of symbol_type safer, using assertions. For instance with: %token ':' ID INT; generate: symbol_type (int token, const std::string&); symbol_type (int token, const int&); symbol_type (int token); It does mean that now named token constructors (make_ID, make_INT, etc.) go through a useless assert, but I think we can ignore this: I assume any decent compiler will inline the symbol_type ctor inside the make_TOKEN functions, which will show that the assert is trivially verified, hence I expect no code will be emitted for it. And anyway, that's an assert, NDEBUG controls it. * data/c++.m4 (symbol_type): Turn into a subclass of basic_symbol. Declare symbol constructors when variants are enabled. * data/variant.hh (_b4_type_constructor_declare) (_b4_type_constructor_define): Replace with... (_b4_symbol_constructor_declare, _b4_symbol_constructor_def): these. Generate symbol_type constructors. * doc/bison.texi (Complete Symbols): Document. * tests/types.at: Check. 2018-12-22 Akim Demaille c++: provide symbol constructors per type On %token FOO BAR we currently generate make_FOO(int) and make_BAR(int). However, in order to factor their scanners, some users would also like to have make_symbol(tok, int), where tok is FOO or BAR. To ensure type safety, add assertions that do check that value type and token type match. Bind this assertion to the parse.assert %define variable. Suggested by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00034.html Should also match expectations from Аскар Сафин. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00023.html * data/variant.hh: Use b4_token_visible_if where applicable. (_b4_type_constructor_declare, _b4_type_constructor_define): New. Use them. 2018-12-22 Akim Demaille c++: style changes * data/c++.m4, data/variant.hh: Improve layout of the generated code. Avoid casts. (_b4_symbol_constructor_declare, _b4_symbol_constructor_define): Rename as... (_b4_token_maker_declare, _b4_token_maker_define): these. * tests/types.at: Improve pair printing. 2018-12-22 Akim Demaille style: simplify tests * tests/types.at: Simplify C++ instantiations. 2018-12-19 Akim Demaille style: use b4_token_visible_if And other formatting/comment changes. * data/variant.hh: Here. 2018-12-19 Akim Demaille NEWS: update 2018-12-19 Akim Demaille c++: fix token constructors for types with commas Bitten by macros, again. See 680b715518795c8648360fcf05f3772c04d2eed2. * data/variant.hh (_b4_symbol_constructor_declare) (_b4_symbol_constructor_define): Do not use user types, which can include commas as in `std::pair`, to macros. * tests/local.at: Adjust the lex related macros to support the case of token constructors. * tests/types.at: Also check token constructors on types with commas. 2018-12-19 Akim Demaille gnulib: update 2018-12-17 Akim Demaille symbols: document the overhaul of symbol declarations * doc/bison.texi (Symbol Decls): New. 2018-12-16 Akim Demaille symbols: check more invalid declarations * tests/input.at (Invalid %nterm uses): Rename as... (Invalid symbol declarations): this. Extend. 2018-12-16 Akim Demaille symbols: check the previous commit * tests/input.at (Symbol declarations): New. 2018-12-16 Akim Demaille regen 2018-12-16 Akim Demaille symbols: clean up their parsing Prompted by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html We have four classes of directives that declare symbols: %nterm, %type, %token, and the family of %left etc. Currently not all of them support the possibility to have several type tags (``), and not all of them support the fact of not having any type tag at all (%type). Let's unify this. - %type POSIX Yacc specifies that %type is for nonterminals only. However, some Bison users want to use it for both tokens and nterms (actually, Bison's own grammar does this in several places, e.g., CHAR). So it should accept char/string literals. As a consequence cannot be used to declare tokens with their alias: `%type foo "foo"` would be ambiguous (are we defining foo = "foo", or are these two different symbols?) POSIX specifies that it is OK to use %type without a type tag. I'm not sure what it means, but we support it. - %token Accept token declarations with number and string literal: (ID|CHAR) NUM? STRING?. - %left, etc. They cannot be the same as %token, because we accept to declare the symbol with %token, and to then qualify its precedence with %left. Then `%left foo "foo"` would also be ambiguous: foo="foo", or two symbols. They cannot be simply a list of identifiers, but POSIX Yacc says we can declare token numbers here. I personally think this is a bad idea, precedence management is tricky in itself and should not be cluttered with token declaration issues. We used to accept declaring a token number on a string literal here (e.g., `%left "token" 1`). This is abnormal. Either the feature is useful, and then it should be supported in %token, or it's useless and we should not support it in corner cases. - %nterm Obviously cannot accept tokens, nor char/string literals. Does not exist in POSIX Yacc, but since %type also works for terminals, it is a nice option to have. * src/parse-gram.y: Avoid relying on side effects. For instance, get rid of current_type, rather, build the list of symbols and iterate over it to assign the type. It's not always possible/convenient. For instance, we still use current_class. Prefer "decl" to "def", since in the rest of the implementation we actually "declare" symbols, we don't "define" them. (token_decls, token_decls_for_prec, symbol_decls, nterm_decls): New. Use them for %token, %left, %type and %nterm. * src/symlist.h, src/symlist.c (symbol_list_type_set): New. * tests/regression.at b/tests/regression.at (Token number in precedence declaration): We no longer accept to give a number to string literals. 2018-12-15 Akim Demaille symbols: set tag_seen when assigning a type to symbols * src/reader.h, src/reader.c (tag_seen): Move to... * src/symtab.h, src/symtab.c: here. (symbol_type_set): Set it to true. * src/parse-gram.y: Don't. 2018-12-14 Akim Demaille tests: isolate test about Yacc warnings * tests/input.at (Yacc warnings): New. (AT_CHECK_UNUSED_VALUES): Remove checks about yacc. 2018-12-14 Akim Demaille parser: warn about string literals in Yacc mode * src/scan-gram.l (scan_integer): Warn. * tests/input.at (Yacc warnings on symbols): Check. 2018-12-14 Akim Demaille parser: warn about hexadecimal token numbers in Yacc mode * src/scan-gram.l (scan_integer): Warn. * tests/input.at (Yacc warnings on symbols): Check. 2018-12-14 Akim Demaille parser: reprecate %nterm back After having spent quite some time on cleaning the handling of symbol declarations in the grammar files, I believe we should keep it. It looks like it's a duplicate of %type, but it is not. While POSIX Yacc requires %type to apply only to nonterminal symbols, it appears that both byacc and bison accept it for tokens too. And some experienced users do actually expect this feature to group symbols (terminal or not) by type ("On the other hand, it is generally more useful IMHO to group terminals and non-terminals with the same type tag together", http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html). Even Bison's own parser does this today (see CHAR). Basically reverts 7928c3e6fbdf47ff81184966cee937e6aa694b94. * src/scan-gram.l (%nterm): Dedeprecate, but issue a Wyacc warning. * tests/input.at: Adjust expectations. (Yacc warnings on symbols): New. * src/symtab.c (symbol_class_set): Fix error introduced in 20b07467938cf880a1d30eb30d6e191843a21fec. 2018-12-11 Eduard Staniloiu CI: add dmd support * .travis.yml: here. 2018-12-11 Akim Demaille style: s/non-terminal/nonterminal/ I personally prefer 'non terminal', or 'non-terminal', but 'nonterminal' is the common spelling. * data/glr.c, src/parse-gram.y, src/symtab.c, src/symtab.h, * tests/input.at, doc/refcard.tex: here. 2018-12-11 Akim Demaille style: rename error functions for clarity * src/symtab.c (symbol_redeclaration, semantic_type_redeclaration) (user_token_number_redeclaration): Rename as... (complain_symbol_redeclared, complain_semantic_type_redeclared) (complain_user_token_number_redeclared): this. 2018-12-11 Akim Demaille parser: improve the error message for symbol class redefinition Currently our error messages include both "symbol redeclared" and "symbol redefined", and they mean something different. This is obscure, let's make this clearer. I think the idea between 'definition' vs. 'declaration' is that in the case of the nonterminals, the actual definition is its set of rules, so %nterm would be about declaration. The case of %token is less clear. * src/symtab.c (complain_class_redefined): New. (symbol_class_set): Use it. Simplify the logic of this function to clearly skip its body when the preconditions are not met. * tests/input.at (Symbol class redefinition): New. 2018-12-11 Akim Demaille examples: simplify computation of yydebug * examples/c/lexcalc/parse.y: here. 2018-12-10 Akim Demaille C++: support variadic emplace Suggested by Askar Safin. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00006.html * data/variant.hh: Implement. * tests/types.at: Check. * doc/bison.texi: Document. 2018-12-09 Akim Demaille examples: add a simple Flex+Bison example in C Suggested by Askar Safin. http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00003.html * examples/c/lexcalc/Makefile, examples/c/lexcalc/README.md, * examples/c/lexcalc/lexcalc.test, examples/c/lexcalc/local.mk, * examples/c/lexcalc/parse.y, examples/c/lexcalc/scan.l: New. 2018-12-09 Akim Demaille regen 2018-12-09 Akim Demaille examples: sort them per language and complete them Convert some of the READMEs to Markdown, which is now more common, and nicely displayed in some git hosting services. Add missing READMEs and Makefiles. Generate XML, HTML and Dot files. Be sure to ship the test files. Complete CLEANFILES to remove all generated files. * examples/calc++: Move into... * examples/c++: here. * examples/mfcalc, examples/rpcalc: Move into... * examples/c: here. * examples/README.md, examples/c++/calc++/Makefile, examples/c/local.mk, * examples/c/mfcalc/Makefile, examples/c/rpcalc/Makefile, * examples/d/README.md, examples/java/README.md: New files. * examples/test (medir): Be robust to deeper directory nesting. 2018-12-09 Akim Demaille regen 2018-12-09 Akim Demaille parser: minor refactoring * src/parse-gram.y (symbol.prec): Reuse int.opt. 2018-12-09 Akim Demaille parser: move checks inside the called functions Revamping the handling of the symbols is the grammar is much more delicate than I anticipated. Let's first move things around for clarity. * src/symtab.c (symbol_make_alias): Don't accept to alias non-terminals. (symbol_user_token_number_set): Don't accept user token numbers for non-terminals. Don't do anything in case of redefinition, instead of trying to update. The flow is eaier to follow this way. 2018-12-08 Akim Demaille d: fix double definition of YYSemanticType * data/lalr1.d: When moving to b4_user_union_members, it also defines b4_tag_seen_flag, so we had two definitions. 2018-12-08 Akim Demaille gnulib: update 2018-12-06 Akim Demaille parser: fix incorrect condition to raise a syntax error * src/parse-gram.y (symbol_def): Fix test. 2018-12-06 Akim Demaille d: fix use of b4_union_members * data/lalr1.d: Use b4_user_union_members instead. 2018-12-06 Akim Demaille style: comment changes * data/variant.hh: here. 2018-12-06 Akim Demaille java, d: add a Makefile for the example * examples/java/Makefile, examples/d/Makefile: New. 2018-12-05 Akim Demaille style: scope reduction in ielr.c * src/ielr.c: here. 2018-12-05 Akim Demaille style: scope reduction in lalr.c * src/lalr.c: here. 2018-12-05 Akim Demaille d, java: compute static subtractions * data/d.m4, data/java.m4: Use b4_subtract where appropriate. 2018-12-04 Akim Demaille d: add an example * examples/d/calc.test, examples/d/calc.y, examples/d/local.mk: 2018-12-04 Akim Demaille d: update the skeleton * data/d.m4, data/lalr1.d: Catch up with Bison. And actually, also catch up with D. 2018-12-04 Akim Demaille d: add experimental support for the D language * configure.ac (ENABLE_D): New. * src/getargs.c (valid_languages): Add d. 2018-12-04 Akim Demaille d: add skeleton for the D language Contributed by Oliver Mangold. https://lists.gnu.org/archive/html/help-bison/2012-01/msg00000.html * README-D.txt, d-skel.m4, d.m4, lalr1.d: New. 2018-12-04 Akim Demaille examples: regenerate them when version.texi changes When we extract the examples from the documentation, %require "@value{VERSION}" is replaced with the current version. If we change the git branch, without changing the documentation, the generated examples will %require a version of Bison that differs from the actual version. * examples/local.mk (extracted.stamp): Depend on doc/version.texi. 2018-12-04 Akim Demaille skeletons: start some technical documentation * data/README: Convert to Markdown. Start documenting some of the macros used in all our skeletons. Simplify and fix the documentation of the macros in the skeletons. 2018-12-03 Akim Demaille regen 2018-12-03 Akim Demaille backend: revamp the handling of symbol types Currently it is the front end that passes the symbol types to the backend. For instance: %token NUM %type exp1 exp2 exp1: NUM { $$ = $1; } exp2: NUM { $$ = $1; } In both cases, $$ and $1 are passed to the backend as having type 'ival' resulting in code like `val.ival`. This is troublesome in the case of api.value.type=union, since in that the case the code this: %define api.value.type union %token NUM %type exp1 exp2 exp1: NUM { $$ = $1; } exp2: NUM { $$ = $1; } because in this case, since the backend does not know the symbol being processed, it is forced to generate casts in both cases: *(int*)(&val)`. This is unfortunate in the first case (exp1) where there is no reason at all to use a cast instead of `val.NUM` and `val.exp1`. So instead delegate the computation of the actual value type to the backend: pass $$ as `symbol-number, ival` and $$ as `symbol-number, MULL`, instead of passing `ival` before. * src/scan-code.l (handle_action_dollar): Find the symbol the action is about, not just its tyye. Pass both symbol-number, and explicit type tag ($n when there is one) to b4_lhs_value and b4_rhs_value. * data/bison.m4 (b4_symbol_action): adjust to the new signature to b4_dollar_pushdef. * data/c-like.m4 (_b4_dollar_dollar, b4_dollar_pushdef): Accept the symbol-number as new argument. * data/c.m4 (b4_symbol_value): Accept the symbol-number as new argument, and use it. (b4_symbol_value_union): Accept the symbol-number as new argument, and use it to prefer ready a union member rather than casting the union. * data/yacc.c (b4_lhs_value, b4_rhs_value): Accept the new symbol-number argument. Adjust uses of b4_dollar_pushdef. * data/glr.c (b4_lhs_value, b4_rhs_value): Adjust. * data/lalr1.cc (b4_symbol_value_template, b4_lhs_value): Adjust to the new symbol-number argument. * data/variant.hh (b4_symbol_value, b4_symbol_value_template): Accept the new symbol-number argument. * data/java.m4 (b4_symbol_value, b4_rhs_data): New. (b4_rhs_value): Use them. * data/lalr1.java: Adjust to b4_dollar_pushdef, and use b4_rhs_data. 2018-12-03 Akim Demaille style: comment and formatting changes * data/bison.m4, data/c++.m4, data/glr.c, data/java.m4, data/lalr1.cc, * data/yacc.c, src/scan-code.l: Fix comments. Prefer POS to denote the position of a symbol in a rule, since NUM is also used to denote symbol numbers. 2018-12-03 Akim Demaille NEWS: update 2018-12-03 Akim Demaille java: make sure the build dir exists * examples/java/local.mk (%D%/Calc.java): here. 2018-12-03 Akim Demaille c++: don't define variant, directly define semantic_type Instead of defining yy::variant and then alias yy::parser::semantic_type to variant, directly define yy::parser::semantic_type. This model is more appropriate if we want to sit the storage on top of unions in C++11. * data/variant.hh (b4_variant_define): Specialize and inline the definition into... (b4_value_type_declare): Here. Define union_type here. * data/lalr1.cc: Adjust. 2018-12-01 Akim Demaille NEWS: update 2018-12-01 Akim Demaille C++: use noexcept and constexpr There are probably more opportunities for them. So far, I observed no performance improvements. * data/c++.m4, data/lalr1.cc, data/stack.hh: here. 2018-12-01 Akim Demaille CI: also display the examples' test suite log * .travis.yml: here. 2018-12-01 Akim Demaille java: add an example * examples/java/Calc.y: New, based on test 495: "Calculator parse.error=verbose %locations". * examples/java/Calc.test, examples/java/local.mk: New. * configure.ac (ENABLE_JAVA): New. * examples/test (prog): Be ready to run Java programs. 2018-12-01 Akim Demaille style: unsigned int -> unsigned See https://lists.gnu.org/archive/html/bison-patches/2018-08/msg00027.html * src/output.c (muscle_insert_unsigned_int_table): Rename as... (muscle_insert_unsigned_table): this. 2018-12-01 Akim Demaille output: restore yyrhs and yyprhs This was demanded several times. See for instance: - David M. Warme https://lists.gnu.org/archive/html/help-bison/2011-04/msg00003.html - box12009 http://lists.gnu.org/archive/html/bug-bison/2016-10/msg00001.html Basically, this reverts: - commit 3d3bc1fe30f356cf674a979409e86ea0f88de4a0 Get rid of (yy)rhs and (yy)prhs - commit d333175f63f402dbadb647175e40ad88bf1defb5 Avoid compiler warning. Note that since these tables are not needed in the generated parsers, no skeleton requests them. This change only brings back their definition to M4, making it possible to user-defined skeletons to use these tables. * src/output.c (muscle_insert_item_number_table): Define. (prepare_rules): Generate the rhs and prhs tables. 2018-11-30 Akim Demaille regen 2018-11-30 Akim Demaille parser: shorten side-effects on current_type * src/parse-gram.y (tag.opt): Don't change current_type. Rather, return its value. Adjust dependencies. 2018-11-30 Akim Demaille style: reduce scopes * src/symlist.c: here. 2018-11-29 Akim Demaille tests: don't name C++ files *.c * tests/synclines.at (syncline escapes): Here. Otherwise, Clang generates an error and skips the test. 2018-11-29 Akim Demaille gnulib: update 2018-11-29 Akim Demaille regen 2018-11-29 Akim Demaille parser: factor the symbol definition * src/parse-gram.y (int.opt, string_as_id.opt): New. (symbol_def): Use it. 2018-11-29 Akim Demaille parser: improve location of string alias errors * src/parse-gram.y (symbol_def): Pass the right location for symbol_make_alias. * tests/regression.at (Duplicate string): Move to... * tests/input.at: here. (Token collisions): New. 2018-11-29 Akim Demaille diagnostics: complain about Bison directives when -Wyacc * src/complain.h, src/complain.c (bison_directive): New. * src/scan-gram.l (BISON_DIRECTIVE): New. Use it for Bison extensions. 2018-11-28 Akim Demaille doc: formatting changes * doc/bison.texi: here. 2018-11-27 Akim Demaille style: fix quotation in the test suite * tests/input.at: here. 2018-11-27 Akim Demaille regen 2018-11-27 Akim Demaille %nterm: do not accept character literals Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html * src/complain.h: Formatting change. * src/parse-gram.y (id): Reject character literals used in a context for non-terminals. * tests/input.at (Invalid %nterm uses): Check that. 2018-11-27 Akim Demaille %nterm: do not accept numbers nor string alias Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html * src/parse-gram.y (symbol_def): Refuse string aliases and numbers for non-terminals. (prologue_declaration): Recover from errors ended with ';'. * tests/input.at (Invalid %nterm uses): New. 2018-11-27 Akim Demaille TODO: update 2018-11-26 Akim Demaille doc: formatting changes * doc/bison.texi: Here. 2018-11-26 Akim Demaille style: comment changes * tests/testsuite.at: here. 2018-11-26 Akim Demaille gnulib: update ignores 2018-11-26 Akim Demaille gnulib: update to use its bitsets Bison's bitset were moved to gnulib. * lib/abitset.c, lib/abitset.h, lib/bbitset.h, lib/bitset.c, * lib/bitset.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, * lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c, * lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h, * lib/lbitset.h, lib/vbitset.c, lib/vbitset.h: Remove. * gnulib: Update. * bootstrap.conf, lib/local.mk: Adjust. 2018-11-25 Akim Demaille gnulib: use conditional dependencies * bootstrap.conf: here. 2018-11-25 Akim Demaille CI: run on xenial Xenial (Ubuntu 16.04) is finally available on Travis. Let's use it. Among the changes: - Automake 1.14.1 -> 1.15.0 - Doxygen 1.8.6 -> 1.8.11 - Flex 2.5.35 -> 2.6.0, with plenty of new compiler warnings - Gettext 0.18.3 -> 0.19.7 - Graphviz 2.36.0 -> 2.38.0 - Texinfo 5.2 -> 6.1 * .travis.yml: here. 2018-11-25 Akim Demaille CI: we don't need git show * .travis.yml: Don't run it. 2018-11-25 Akim Demaille regen 2018-11-25 Akim Demaille warning: avoid warnings about unreachable code Reported by Uxio Prego. https://lists.gnu.org/archive/html/help-bison/2018-11/msg00031.html We also need to move the unreachable 'goto' to a reachable place, otherwise clang complains about the code being unreachable anyway. See also https://bugs.llvm.org/show_bug.cgi?id=39736. Interestingly, we don't have to apply that trick to `#define YYCDEBUG if (false) std::cerr`, clang does not warn when the code comes from macro expansion. * configure.ac: Use -Wunreachable-code when supported. * data/lalr1.cc, data/yacc.c: Pacify clang's warning about `if (0)` by using a macro. Another possibility was to move this statement to a reachable place. * tests/actions.at, tests/c++.at: Avoid generating unreachable code. 2018-11-24 Akim Demaille yacc.c: avoid generating dead code We should probably introduce some struct and functions to deal with stack management, rather than open coding it. yyparse would be much nicer to read, and a better model for possible other skeletons. * data/yacc.c (yyparse::yysetstate): Avoid generating code when neither yyoverflow nor YYSTACK_RELOCATE is defined. 2018-11-22 Akim Demaille %expect-rr: tune the number of conflicts per rule Currently on a grammar such as exp : a '1' | a '2' | a '3' | b '1' | b '2' | b '3' a: b: we count only one rr-conflict on the `b:` rule, i.e., we expect: b: %expect-rr 1 although there are 3 conflicts in total. That's because in the conflicted state we count only a single conflict, not three (one for each of the lookaheads: '1', '2', '3'). State 0 0 $accept: . exp $end 1 exp: . a '1' 2 | . a '2' 3 | . a '3' 4 | . b '1' 5 | . b '2' 6 | . b '3' 7 a: . %empty ['1', '2', '3'] 8 b: . %empty ['1', '2', '3'] '1' reduce using rule 7 (a) '1' [reduce using rule 8 (b)] '2' reduce using rule 7 (a) '2' [reduce using rule 8 (b)] '3' reduce using rule 7 (a) '3' [reduce using rule 8 (b)] $default reduce using rule 7 (a) exp go to state 1 a go to state 2 b go to state 3 See https://lists.gnu.org/archive/html/bison-patches/2013-02/msg00106.html. * src/conflicts.c (rule_has_state_rr_conflicts): Rename as... (count_rule_state_sr_conflicts): this. DWIM. (count_rule_rr_conflicts): Adjust. * tests/conflicts.at (%expect-rr in grammar rules) (%expect-rr too much in grammar rules) (%expect-rr not enough in grammar rules): New. 2018-11-22 Akim Demaille %expect-rr: fix the computation of the overall number of conflicts On a grammar such as exp: "num" | "num" | "num" we currently report only one RR conflict, instead of two. This bug is present since the origins of Bison commit 08089d5d35ece0c7d41659cc1bc09638e2abb151 Author: David MacKenzie Date: Tue Apr 20 05:42:52 1993 +0000 Initial revision and was preserved in commit 676385e29c4aedfc05d20daf1ef20cd4ccc84856 Author: Paul Hilfinger Date: Fri Jun 28 02:26:44 2002 +0000 Initial check-in introducing experimental GLR parsing. See entry in ChangeLog dated 2002-06-27 from Paul Hilfinger for details. See https://lists.gnu.org/archive/html/bison-patches/2018-11/msg00011.html * src/conflicts.h, src/conflicts.c (count_state_rr_conflicts) (count_rr_conflicts): Use only the correct count of conflicts. * tests/glr-regression.at: Fix expectations. 2018-11-21 Akim Demaille tests: generate *.output files * tests/glr-regression.at: here. 2018-11-21 Akim Demaille %expect: tune the number of conflicts per rule Currently on a grammar such as exp: "number" | exp "+" exp | exp "*" exp we count only one sr-conflict for both binary rules, i.e., we expect: exp: "number" | exp "+" exp %expect 1 | exp "*" exp %expect 1 although there are 4 conflicts in total. That's because in the states in conflict, for instance that for the "+" rule: State 6 2 exp: exp . "+" exp 2 | exp "+" exp . [$end, "+", "*"] 3 | exp . "*" exp "+" shift, and go to state 4 "*" shift, and go to state 5 "+" [reduce using rule 2 (exp)] "*" [reduce using rule 2 (exp)] $default reduce using rule 2 (exp) we count only a single conflict, although there are two (one on "+" and another with "*"). See https://lists.gnu.org/archive/html/bison-patches/2013-02/msg00106.html. * src/conflicts.c (rule_has_state_sr_conflicts): Rename as... (count_rule_state_sr_conflicts): this. DWIM. (count_rule_sr_conflicts): Adjust. * tests/conflicts.at (%expect in grammar rules): New. 2018-11-21 Akim Demaille regen 2018-11-21 Akim Demaille style: reduce scopes * src/conflicts.c, src/reader.c: Minor style changes. 2018-11-21 Paul Hilfinger allow %expect and %expect-rr modifiers on individual rules This change allows one to document (and check) which rules participate in shift/reduce and reduce/reduce conflicts. This is particularly important GLR parsers, where conflicts are a normal occurrence. For example, %glr-parser %expect 1 %% ... argument_list: arguments %expect 1 | arguments ',' | %empty ; arguments: expression | argument_list ',' expression ; ... Looking at the output from -v, one can see that the shift-reduce conflict here is due to the fact that the parser does not know whether to reduce arguments to argument_list until it sees the token AFTER the following ','. By marking the rule with %expect 1 (because there is a conflict in one state), we document the source of the 1 overall shift- reduce conflict. In GLR parsers, we can use %expect-rr in a rule for reduce/reduce conflicts. In this case, we mark each of the conflicting rules. For example, %glr-parser %expect-rr 1 %% stmt: target_list '=' expr ';' | expr_list ';' ; target_list: target | target ',' target_list ; target: ID %expect-rr 1 ; expr_list: expr | expr ',' expr_list ; expr: ID %expect-rr 1 | ... ; In a statement such as x, y = 3, 4; the parser must reduce x to a target or an expr, but does not know which until it sees the '='. So we notate the two possible reductions to indicate that each conflicts in one rule. See https://lists.gnu.org/archive/html/bison-patches/2013-02/msg00105.html. * doc/bison.texi (Suppressing Conflict Warnings): Document %expect, %expect-rr in grammar rules. * src/conflicts.c (count_state_rr_conflicts): Adjust comment. (rule_has_state_sr_conflicts): New static function. (count_rule_sr_conflicts): New static function. (rule_nast_state_rr_conflicts): New static function. (count_rule_rr_conflicts): New static function. (rule_conflicts_print): New static function. (conflicts_print): Also use rule_conflicts_print to report on individual rules. * src/gram.h (struct rule): Add new fields expected_sr_conflicts, expected_rr_conflicts. * src/reader.c (grammar_midrule_action): Transfer expected_sr_conflicts, expected_rr_conflicts to new rule, and turn off in current_rule. (grammar_current_rule_expect_sr): New function. (grammar_current_rule_expect_rr): New function. (packgram): Transfer expected_sr_conflicts, expected_rr_conflicts to new rule. * src/reader.h (grammar_current_rule_expect_sr): New function. (grammar_current_rule_expect_rr): New function. * src/symlist.c (symbol_list_sym_new): Initialize expected_sr_conflicts, expected_rr_conflicts. * src/symlist.h (struct symbol_list): Add new fields expected_sr_conflicts, expected_rr_conflicts. * tests/conflicts.at: Add tests "%expect in grammar rule not enough", "%expect in grammar rule right.", "%expect in grammar rule too much." 2018-11-21 Akim Demaille NEWS: update 2018-11-21 Akim Demaille gnulib: update 2018-11-21 Akim Demaille remove ancient lint directives * data/c++.m4, data/yacc.c: Remove surprising remains of lint directives. 2018-11-21 Jannick doc: calc++: remove ancient fix for flex * doc/bison.texi (Calc++ Scanner): Remove fix for Flex 2.5.31-2.5.33. 2018-11-21 Jannick doc: calc++: ignore \r in the scaner * doc/bison.texi (Calc++ Scanner): Ignore \r. 2018-11-20 Akim Demaille style: harmonize the labels of yyparse * data/glr.c, data/lalr1.cc, data/yacc.c: Fix indentation and other formatting issues. 2018-11-20 Akim Demaille regen 2018-11-20 Akim Demaille style: avoid lengthy actions We also lack a consistent naming for directive implementations. `directive_skeleton` is too long, `percent_skeleton` is not very nice looking, `process_skeleton` looks ambiguous, `do_skeleton` is somewhat ambiguous too, but seems a better track. * src/parse-gram.y (version_check): Rename as... (do_require): this. (do_skeleton): New. Use it. 2018-11-20 Akim Demaille c++: using macros around user types breaks when they include comma We may generate code such as basic_symbol (typename Base::kind_type t, YY_RVREF (std::pair) v); which, of course, breaks, because YY_RVREF sees two arguments. Let's not play tricks with _VA_ARGS__, I'm unsure about it portability. Anyway, I plan to change more things in this area. Reported by Sébastien Villemot. http://lists.gnu.org/archive/html/bug-bison/2018-11/msg00014.html * data/variant.hh (b4_basic_symbol_constructor_declare) (b4_basic_symbol_constructor_define): Don't use macro on user types. * tests/types.at: Check that we support pairs. 2018-11-16 Akim Demaille README: update 2018-11-16 Akim Demaille tests: remove duplicate definition Probably imported by 6d58c632025cb6928a90e4176577982bfb9c3981, a merge commit. * tests/atlocal.in (POSIXLY_CORRECT_IS_EXPORTED): Define it once. 2018-11-16 Akim Demaille glr.c: fix use of _Noreturn In C++, [[noreturn]] must not be between "static" and the rest of the function signature, it must precede it. C's _Noreturn does not seem to have such a constraint, but it is therefore compatible with the C++ constraint. Since we #define _Noreturn as [[noreturn]] is modern C++, be sure to push the _Noreturn first. Unfortunately this was not caught by the test suite, because it always loads config.h first, and config.h contains another definition of _Noreturn that does not use [[noreturn]], and hides ours. That's probably a sign we should avoid always loading config.h. * data/glr.c (yyFail, yyMemoryExhausted): here. 2018-11-16 Akim Demaille tests: run the api.value.type tests for all C++ standards * tests/local.at (AT_LANG_FOR_EACH_STD): New. (AT_REQUIRE_CXX_VERSION): Rename as... (AT_REQUIRE_CXX_STD): this. Accept an argument for what to do when the requirement is not met. * tests/types.at (api.value.type): Check all the C++ stds. 2018-11-16 Akim Demaille CI: split the ASAN job in two The following commit introduce even more compilations/runs than before, and with ASAN on, we go beyond to 50min credit from Travis. * .travis.yml (Clang 7 libc++ and ASAN): Split in two. 2018-11-14 Akim Demaille c++: use YY_CPLUSPLUS * data/c++.m4: here. 2018-11-13 Akim Demaille c++: factor the handling of __cplusplus into YY_CPLUSPLUS * data/c++.m4 (b4_cxx_portability): Define it. Use it. * data/lalr1.cc, data/variant.hh: Use it. 2018-11-13 Akim Demaille style: formatting changes * src/scan-gram.l: here. 2018-11-13 Akim Demaille tests: clarify some magic constant * tests/c++.at (C++ Variant-based Symbols Unit Tests): here. 2018-11-13 Akim Demaille examples: remove useless includes * examples/c++/variant-11.yy, examples/c++/variant.yy: here. Fix warning when storing a long into an int. 2018-11-12 Akim Demaille tests: compile the C++ examples with warnings * examples/c++/local.mk: Pass $(WARN_CXXFLAGS_TEST). 2018-11-12 Akim Demaille regen 2018-11-12 Akim Demaille parser: deprecate %error-verbose It is unfortunate that %error_verbose was properly diagnosed as obsoleted by "%define parse.error verbose", but %error-verbose was not. * src/parse-gram.y (%error-verbose): Remove support. * src/scan-gram.l: Do it here instead, with a warning. * tests/input.at (Deprecated directives): Check it. 2018-11-12 Akim Demaille tests: migrate from %error-verbose to %define parse.error verbose * tests/actions.at, tests/c++.at, tests/conflicts.at, * tests/cxx-type.at, tests/existing.at, tests/glr-regression.at, * tests/headers.at, tests/input.at, tests/java.at, tests/javapush.at, * tests/local.at, tests/regression.at, tests/skeletons.at, * tests/torture.at: Here. 2018-11-12 Akim Demaille parser: deprecate %nterm It has several weaknesses. Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html * src/scan-gram.l: here. 2018-11-12 Akim Demaille tests: fix syncline tests These tests are skipped with GCC: "\"".c:1:5: error: function declaration isn't a prototype [-Werror=strict-prototypes] int main() { return 0; } ^~~~ * tests/synclines.at: Stop writing C++ in C. * tests/local.at: Formatting changes. 2018-11-11 Akim Demaille NEWS: expected features of Bison 3.3 2018-11-11 Akim Demaille yacc: reduce scope in push mode * data/yacc.c (yypull_parse): Here. 2018-11-11 Akim Demaille style: comment changes * data/c++.m4, data/glr.c, data/lalr1.java, data/yacc.c (yytranslate, YYTRANSLATE): Harmonize comments. 2018-11-10 Akim Demaille c++: simplify a default construction * data/lalr1.cc (yytnamerr_): here. 2018-11-10 Akim Demaille regen 2018-11-10 Akim Demaille reader: no longer accept %define variable names in quotes It was never documented. * src/parse-gram.y (variable): Here. 2018-11-10 Akim Demaille dogfooding: use api.value.type union * src/parse-gram.y (api.value.type): Set to union. Replace occurrences of %union with explicit %types. * src/scan-gram.l: Adjust yylval's field names. (RETURN_VALUE): No longer needs the Field argument. Use it more. 2018-11-10 Akim Demaille djgpp: remove Support for DJGPP was announced to be removed in the NEWS of Bison 3.1 (2018-08-27) unless someone expressed interest. There was no answer. * djgpp: Remove. * NEWS, Makefile.am, cfg.mk, po/POTFILES.in: Adjust. 2018-11-10 Akim Demaille scanner: simplify use of gettext * src/scan-gram.l (unexpected_end): Leave the actual call to gettext to the caller. 2018-11-10 Akim Demaille style: clean up the scanner and parser * src/scan-gram.l: Formatting changes. Add "missing" assertion for symmetry. * src/parse-gram.y: Formatting changes. 2018-11-09 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-11-09 Akim Demaille version 3.2.1 * NEWS: Record release date. 2018-11-08 Akim Demaille build: fix issues in the generated tarball Reported by Andre da Costa Barros. https://savannah.gnu.org/patch/?9716 * examples/calc++/local.mk: We no longer generate position.hh and stack.hh. Leaving them here triggers their concurrent generation, which fails. (%C%_calc___CPPFLAGS): Fix the extracted headers in the source tree. * examples/mfcalc/local.mk (%C%_mfcalc_CPPFLAGS): Ditto. 2018-11-07 Akim Demaille build: fix typo Reported by Horst Von Brand. https://savannah.gnu.org/support/?109580 * examples/local.mk (.PHOMY): Rename as... (.PHONY): this. 2018-11-06 Akim Demaille NEWS: update 2018-11-06 Akim Demaille examples: ship them Currently, the examples are extracted on the user's side. Unfortunately, that requires that the user has Perl, which is otherwise not needed for Bison. Let's ship the examples instead. The examples were handled this way so that we could depend on configure flags: if --enable-gcc-warnings is passed, it is understood as "I'm a maintainer", so the examples are generated with `#line`s. Regular users should not see them, so they are now unconditionally removed when rolling a tarball. Reported by Mike Frysinger. https://lists.gnu.org/archive/html/bison-patches/2015-04/msg00000.html * examples/local.mk: Ship all the extracted files. (examples-unline): New. Make sure that the generated tarballs do not contain the #lines. 2018-11-06 Akim Demaille build: minor fixes in doc/ * doc/local.mk: Consistently use *.tmp for temporary files. Fix comments. 2018-11-05 Akim Demaille CI: maximize chances of errors sooner * .travis.yml: Try clang and icc soon, so that we don't have to wait for the end of the run to know that they fail. 2018-11-04 Akim Demaille c++: improve the generated documentation * data/lalr1.cc, data/location.cc: Improve documenting comments. * tests/c++.at (Doxygen Documentation): Fix AT_BISON_OPTION_PUSHDEFS, so that the generated yyerror is correct. * tests/c++.at, tests/headers.at: Prefer %empty. 2018-11-04 Akim Demaille tests: don't fail if the C++ compiler does not work Also, make sure that `make dist` generates a correct tarball even if the C++ compiler does not work. Reported by Nelson H. F. Beebe. * m4/cxx.m4 (BISON_CXX_WORKS): Define to true/false instead of true/exit 77. The latter is too dangerous to use (it directly quits). (ENABLE_CXX): New name for the Automake conditional, for consistency with ENABLE_CXX11 etc. * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Adjust to the new semantics of BISON_CXX_WORKS. * examples/c++/local.mk: Skip the variant test if C++ does not work. * examples/calc++/local.mk: Likewise. 2018-11-04 Akim Demaille tests: don't disable C++ warnings in C files This triggers error with GCC. See eff6739124c61bb5660d78453210d1d6a17d30e7. * tests/testsuite.h: Disable -Wzero-as-null-pointer-constant only for C++. 2018-11-04 Akim Demaille c++: workaround portability issue On some systems (x86_64-pc-solaris2.11), with Developer Studio 12.5's CC, we get: ".../include/CC/Cstd/vector.cc", line 127: Error: Cannot assign const yy::parser::stack_symbol_type to yy::parser::stack_symbol_type without "yy::parser::stack_symbol_type::operator=(const yy::parser::stack_symbol_type&)";. ".../include/CC/Cstd/vector", line 475: Where: While instantiating "std::vector::__insert_aux(yy::parser::stack_symbol_type*, const yy::parser::stack_symbol_type&)". ".../include/CC/Cstd/vector", line 475: Where: Instantiated from non-template code. 1 Error(s) detected. Don't expect __cplusplus to be always defined. If it's not, consider this is C++98. Reported by Nelson H. F. Beebe. * data/c++.m4, data/lalr1.cc, examples/c++/variant.yy, tests/local.at, * tests/testsuite.h: An undefined __cplusplus means pre C++11. 2018-11-03 Akim Demaille tests: work around getopt portability issues On some systems, we don't use our getopt. As a consequence the error messages vary: $ bison --skeleton bison: option requires an argument -- skeleton Try 'bison --help' for more information. instead of bison: option '--skeleton' requires an argument Try 'bison --help' for more information. Reported by Jannick and Nelson H. F. Beebe. https://lists.gnu.org/archive/html/bison-patches/2018-10/msg00140.html * tests/input.at (Invalid number of arguments): work around getopt portability issues. 2018-11-03 Akim Demaille doc: -Wzero-as-null-pointer-constant was added to GCC 4.7 It is not supported by previous versions. See https://www.gnu.org/software/gcc/gcc-4.7/changes.html Reported by Nelson H. F. Beebe. * doc/bison.texi (Calc++ Scanner): here. 2018-11-02 Adam Sampson examples: #include in calc++ strerror is defined by , and recent versions of GNU libstdc++ no longer include this automatically from . 2018-10-31 Akim Demaille c: provide a definition of _Noreturn that works for C++ On Solaris, GCC 7.3 defines: -std=c++14 -std=c++17 __cplusplus 201402L 201703L __STDC_VERSION__ 199901L 201112L So the current #definition of _Noreturn sees that 201112 <= __STDC_VERSION__, i.e., that C11 is supported, so it expects _Noreturn to be supported. Apparently it is not. This is only for C++, the test suite works for C. However, the test suite does not try several C standards, maybe we should... http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00064.html * data/c.m4 (b4_attribute_define): Define _Noreturn as [[noreturn]] in modern C++. 2018-10-30 Akim Demaille c: update the definition of _Noreturn Does not work on Solaris 11.3 x86/64: 479. c++.at:1293: testing C++ GLR parser identifier shadowing ... ======== Testing with C++ standard flags: '-std=c++17' ./c++.at:1332: $BISON_CXX_WORKS stderr: stdout: ./c++.at:1332: $CXX $CXXFLAGS $CPPFLAGS $LDFLAGS -o input input.cc $LIBS stderr: input.cc:837:8: error: '_Noreturn' does not name a type static _Noreturn void ^~~~~~~~~ input.cc:845:8: error: '_Noreturn' does not name a type static _Noreturn void ^~~~~~~~~ Reported by Kiyoshi Kanazawa. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00051.html * data/c.m4 (b4_attribute_define): Use the snippet which is currently in gnulib's m4/gnulib-common.m4 (which seems a little more advanced than lib/_Noreturn.h). 2018-10-30 Akim Demaille tests: don't expect the shell to support 'local' It doesn't work on Solaris 11.3 x86/64. Reported by Kiyoshi Kanazawa. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00051.html * examples/test: Don't use 'local'. 2018-10-30 Akim Demaille bitset: fix warning Reported by Hans Åberg. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00047.html * lib/bitset.c (bitset_count_): here. 2018-10-30 Akim Demaille build: fix use of gnulib Make variables Reported by Kiyoshi Kanazawa. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00048.html * lib/local.mk (lib_libbison_a_LIBADD): Merge into... * src/local.mk (src_bison_LDADD): here. 2018-10-29 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-10-29 Akim Demaille version 3.2 * NEWS: Record release date. 2018-10-29 Akim Demaille build: don't depend on the libc to generate bison.help The "Report translation bugs to..." part of --help is issued only on glibc systems. So if the tarball is not wrapped on such a system, and used on such a system (or the converse), then bison.help will differ on the user's system, and help2man will be called to update bison.1. But help2man should not be a requirement. Reported by Alexandre Duret-Lutz. * doc/local.mk (doc/bison.help): Remove the possible doc about translation bugs. Pass LC_ALL=C, as reported in src/getargs.c's usage(). (doc/cross-options.texi): Use bison.help instead of calling bison --help. 2018-10-29 Akim Demaille c++: always issue the "generated by" message Some users rely on this sentence to know that the file can be ignored. Reported by Alexandre Duret-Lutz. * data/bison.m4 (b4_generated_by): New. (b4_copyright): Use it. * data/location.cc, data/stack.hh: Use it too, for the stub files (position.hh and stack.hh). 2018-10-28 Akim Demaille cfg.mk: remove exceptions for timevar They appear to be no longer needed. * cfg.mk: here. 2018-10-28 Akim Demaille style: clean up src/AnnotationList.c * src/AnnotationList.c: Reduce scopes. 2018-10-28 Akim Demaille style: clean up print.c * src/print.c: Reduce scopes. 2018-10-27 Akim Demaille bitset: clean up bbitset.h * lib/libiberty.h: Inline in... * lib/bbitset.h: here. * lib/local.mk: Adjust. 2018-10-27 Akim Demaille bitset: clean up bitset.h * lib/bitset.h: Fix include order. 2018-10-27 Akim Demaille bitset: clean up vbitset.c * lib/vbitset.c: Reduce scopes, etc. 2018-10-27 Akim Demaille bitset: clean up lbitset.c * lib/lbitset.c: Reduce scopes, etc. 2018-10-27 Akim Demaille bitset: clean up ebitset.c * lib/ebitset.c: Reduce scopes, etc. 2018-10-27 Akim Demaille bitset: clean up bitset_stats.c * lib/bitset_stats.c: Reduce scopes, etc. 2018-10-27 Akim Demaille bitset: clean up bitset.c * lib/bitset.c: Reduce scopes, etc. 2018-10-27 Akim Demaille bitset: clean up abitset.c * lib/abitset.c: Reduce scopes, etc. 2018-10-27 Jannick xml2dot.xsl: fix typos in comments 2018-10-27 Akim Demaille doc: fix distcheck The extracted example, simple.yy, does not use %require "3.2", so it generates a stack.hh, which breaks distcheck. * doc/bison.texi: Fix it. 2018-10-27 Akim Demaille NEWS: prepare for 3.2 2018-10-26 Akim Demaille tests: beware of Windows file name constraints Don't expect to be able to build a file named '"\"".y' (6 characters) on Windows. Reported by Jannick. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00042.html * tests/synclines.at (syncline escapes): Skip if we failed to create the file. 2018-10-26 Akim Demaille tests: fix invocation of m4_map * tests/actions.at, tests/synclines.at: m4_map takes a list of arguments in $2, m4_map_args takes arguments in $2, $3, etc. 2018-10-26 Akim Demaille doc: spell check * README, doc/bison.texi, examples/README, examples/c++/README: here. 2018-10-26 Akim Demaille examples: add a Makefile for C++ short examples * examples/c++/Makefile: New. * examples/c++/local.mk, examples/c++/README: Adjust. 2018-10-26 Akim Demaille doc: some improvements * doc/bison.texi (Calc++ Scanner): Show how exception can be thrown from auxiliary functions. Clarify the meaning of the various flex %options we use. Get rid of a warning. (Calc++ Parsing Driver): Use the parser as a functor. 2018-10-26 Akim Demaille examples: check the errors * examples/test (run): Check stderr, unless -noerr is passed. * examples/calc++/calc++.test, examples/mfcalc/mfcalc.test: Check errors. 2018-10-25 Akim Demaille doc: minor fixes * doc/bison.texi: Simplify wording. Fix Texinfo error. (Complete Symbols): Handle the token EOF. (Calc++ Parser): In the modern C++ world, prefer assignment to swap. (Strings are Destroyed): Prefer an explicit 'continue' to a comment. 2018-10-24 Akim Demaille configure: quit on trying to get ICC and Flex be friends The CI is using Flex 2.5.35. And ICC is too picky for it. Let's stop making these warnings errors. I wish I could disable them in the source files using the ICC version and the Flex version, but ICC's pragma support is unclear, and I'm tired of fighting it. * configure.ac (FLEX_SCANNER_CXXFLAGS): Make warnings warnings. * examples/c++/local.mk: Comment changes. 2018-10-24 Akim Demaille doc: mention earlier how to disable the generation of location.hh Suggested by Victor Khomenko. * doc/bison.texi (C++ Bison Interface): Here. 2018-10-24 Akim Demaille c++: std::to_string is available in C++11 Reported by Victor Khomenko. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00033.html * doc/bison.texi, examples/c++/variant-11.yy: Use std::to_string instead of ours. 2018-10-24 Akim Demaille examples: move the variant examples into the C++ directory * examples/variant-11.test examples/variant-11.yy, * examples/variant.test examples/variant.yy: Move into examples/c++/. * examples/c++/README: New. * examples/README, examples/c++/local.mk, examples/local.mk: Adjust. 2018-10-24 Akim Demaille doc: an introductory example for C++ Suggested by Victor Khomenko. http://lists.gnu.org/archive/html/bug-bison/2018-08/msg00037.html * doc/bison.texi (A Simple C++ Example): New. * examples/c++/local.mk, examples/c++/simple.test: New. Extract, check, and install this new example. * examples/local.mk: Adjust. * examples/test: Adjust to the case where the dirname differs from the test name. 2018-10-24 Akim Demaille build: remove a few copies of the Copyright from the generated Makefile * build-aux/local.mk, cfg.mk, examples/calc++/local.mk, * examples/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk, lib/local.mk, src/local.mk, * tests/local.mk: Use Automake comments so that we don't get a copy of each in the generated Makefile. 2018-10-24 Akim Demaille c++: make operator() an alias to the parse function * data/glr.cc, data/lalr1.cc (operator()): New. * doc/bison.texi: Update. 2018-10-23 Akim Demaille build: enable more warnings during tests Prompted by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00018.html * configure.ac: here. 2018-10-23 Akim Demaille regen 2018-10-23 Akim Demaille yacc.c: work around strange typing issues On the CI, both GCC and Clang report: src/parse-gram.c: In function 'yy_lac': src/parse-gram.c:1479:29: error: format '%hd' expects argument of type 'int', but argument 3 has type 'yytype_int16 {aka long int}' [-Werror=format=] YYDPRINTF ((stderr, " G%hd", yystate)); ^ Although yytype_int16 is supposed to be a short int, not a long int. This must be explored. * data/yacc.c (yy_lac): Work around typing issue. 2018-10-23 Akim Demaille yacc.c: don't define _Noreturn uselessly Clang warns: aux/x.h:97:11: error: macro name is a reserved identifier [-Werror,-Wreserved-id-macro] # define _Noreturn YY_ATTRIBUTE ((__noreturn__)) Reported by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00024.html * data/c.m4 (b4_attribute_define): Don't define _Noreturn unconditionally. * data/glr.c: Ask for _Noreturn. 2018-10-23 Akim Demaille pacify ICC 16.0.3 20160415 Found on the CI. yacc.c: error #2259: non-pointer conversion from "int" to "yytype_int16={short}" may lose significant bits yystate = (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyesp ^ glr.c: error #2259: non-pointer conversion from "int" to "yybool={unsigned char}" may lose significant bits yybool yynormal YY_ATTRIBUTE_UNUSED = (yystackp->yysplitPoint == YY_NULLPTR); ^ error #2259: non-pointer conversion from "int" to "yybool={unsigned char}" may lose significant bits return yypact_value_is_default (yypact[yystate]); ^ error #2259: non-pointer conversion from "int" to "yybool={unsigned char}" may lose significant bits return 0 < yyaction; ^ error #2259: non-pointer conversion from "int" to "yybool={unsigned char}" may lose significant bits return yyaction == 0; ^ error #2259: non-pointer conversion from "int" to "yybool={unsigned char}" may lose significant bits yystackp->yytops.yylookaheadNeeds[yys] = yychar != YYEMPTY; ^ * data/glr.c, data/yacc.c: Avoid these warnings. 2018-10-23 Akim Demaille flex: work around more warnings * doc/bison.texi: here. 2018-10-23 Akim Demaille examples: clang 5 defines nullptr as a macro * examples/variant.yy: So don't do it. * examples/variant-11.yy: Fix comment. 2018-10-23 Akim Demaille glr.c: be strict about types * data/glr.c: Don't use `foo |= bar` with foo and bar being yybool: the result appears to be an int, not a yybool. Use yybool where appropriate. Add casts where needed. 2018-10-23 Akim Demaille yacc.c: fix warnings about integral types Reported by Derek Clegg. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00018.html Rather than adding casts, we should be more careful with types. For instance yystate should be a yytype_int16. But currently we can't: it is also used sometimes for storing other things that state numbers. * data/yacc.c (yyparse): Add missing casts. 2018-10-22 Akim Demaille yacc.c: clarify the computation of yystate The yacc.c skeleton is old, and was using many tricks to save registers. Today's register allocators can do this themselves. Let's keep the code simpler to read and let compilers do their job. * data/yacc.c: Avoid using yystate for different types of content. An inline function would be better, but doing this portably will be a problem. 2018-10-22 Akim Demaille printf returns a signed int * tests/local.at: Adjust location_print's signature. 2018-10-22 Akim Demaille tests: be strict about types * tests/actions.at, tests/c++.at, tests/cxx-type.at, * tests/glr-regression.at, tests/local.at, tests/torture.at, * tests/types.at: Pay stricter attention to types to avoid warnings. 2018-10-22 Akim Demaille c++: fix signedness issues * data/lalr1.cc, data/stack.hh: The callers of stack use int, while stack is based on size_type. Add overloads to avoid warnings. 2018-10-22 Akim Demaille c++: minor changes * data/lalr1.cc: Fix oldish comment. * data/stack.hh: Prefer typename for type names. Use size() instead of duplicating it. * examples/variant-11.yy, examples/variant.yy (yylex): Use int, as this is the type of the semantic value. 2018-10-22 Akim Demaille all: display a clear warning about private macros * data/bison.m4 (b4_disclaimer): New. * data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c: Use it. 2018-10-21 Akim Demaille c++: minor simplification * data/stack.hh: Prefer a default argument value to two constructors. 2018-10-21 Akim Demaille regen 2018-10-21 Akim Demaille all: avoid useless comments and #lines Currently we emit useless code for places where we might issue user content, but there is none. This commit avoids this. Besides, some of the comments looked like implementation details ("Copy the first part of user declarations"), rather than made for the reader of the result ("First part of user prologue"). On Bison's parse-gram.c we get: @@ -76,10 +76,6 @@ #define yynerrs gram_nerrs -/* Copy the first part of user declarations. */ - -#line 82 "src/parse-gram.c" /* yacc.c:339 */ - * data/bison.m4 (b4_define_user_code): Accept a comment to document the section. Do not emit any code if the content is empty. Adjust callers to not emit the comment. Do not * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, data/yacc.c: Adjust. 2018-10-21 Akim Demaille tests: refactor * tests/actions.at, tests/synclines.at: Prefer iteration to copy-paste. 2018-10-21 Akim Demaille tests: rename AT_SKEL_CC_IF/AT_SKEL_JAVA_IF as AT_CXX_IF/AT_JAVA_IF The previous name is too obscure, and the other macros for C++ use CXX, not CC. * tests/local.at (AT_SKEL_CC_IF, AT_SKEL_JAVA_IF): Rename as... (AT_CXX_IF, AT_JAVA_IF): these. Adjust callers. 2018-10-21 Akim Demaille c++: check that emplace for rvalues works See the previous commit. * tests/local.at (AT_REQUIRE_CXX_VERSION): New. * tests/types.at (api.value.type): Check emplace in C++14. 2018-10-20 Akim Demaille c++: prefer a perfect forwarding version of variant's emplace * data/variant.hh (emplace): In modern C++, use only a perfect forwarding version. And use it. * doc/bison.texi: Document it. 2018-10-20 Akim Demaille c++: prefer 'emplace' to 'build' When we introduced variants in Bison, C++ did not have the 'emplace' functions, and we chose 'build'. Let's align with modern C++ and promote 'emplace' rather than 'build'. * data/lalr1.cc, data/variant.hh (emplace): New. (build): Deprecate in favor of emplace. * doc/bison.texi: Adjust. 2018-10-20 Akim Demaille %printer: promote yyo rather than yyoutput * doc/bison.texi: Promote yyo rather than yyoutput. * data/c.m4, data/glr.cc, tests/types.at, tests/calc.at, tests/regression.at: Adjust. 2018-10-20 Akim Demaille doc: improve the C++ section * doc/bison.texi (C++ Parser): file.hh and location.hh are no longer mandatory. Various minor fixes. 2018-10-20 Akim Demaille doc: reorder C++ sections * doc/bison.texi (C++ Parser Interface): Document before semantic_type and location_type. 2018-10-20 Akim Demaille git: don't ignore auxiliary Texinfo files As a matter of fact, I think it is wrong to gitignore generated files that belong to the build tree. There should be the strict minimum, and it's up to people that build in place to adjust their own ~/.gitignore. * doc/.gitignore: here. Remove files we no longer produce (thanks to texi2dvi). 2018-10-20 Akim Demaille c++: do not exhibit private macros * examples/variant-11.yy: here. 2018-10-20 Akim Demaille c++: don't obfuscate std::move when not needed * data/lalr1.cc, data/variant.hh: Avoid macros that depend on the version of C++ when not needed. 2018-10-20 Akim Demaille build: add missing gnulib libs Reported by Denis Excoffier. * lib/local.mk, src/local.mk: here. 2018-10-18 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-10-18 Akim Demaille version 3.1.91 * NEWS: Record release date. 2018-10-18 Akim Demaille NEWS: update 2018-10-18 Akim Demaille examples: force stack resizing with unique_ptr In the previous commit we fixed a problem when the C++ stack was resized. The test was using ints. Let's add a test with someone quite touchy: unique_ptr * examples/variant-11.yy: Accept an argument, which is the number of numbers to send to the parser. * examples/variant-11.test: Check with many numbers. 2018-10-18 Akim Demaille lalr1.cc: fix stack symbol move In some casing, once we moved a stack symbol, we forget to mark the source stack symbol as emptied. As a consequence, it may be destroyed a second time. This happens when the stack has to be resized. * data/lalr1.cc (stack_symbol_type::stack_symbol_type): Record that the source was emptied. (stack_symbol_type::operator=): Likewise. * tests/c++.at (C++ Variant-based Symbols Unit Tests): Force the stack to be resized. Check its content. 2018-10-17 Akim Demaille doc: improve the doc of the examples * examples/README: here. 2018-10-17 Akim Demaille reader: recognize C++ even when it's not lalr1.cc or glr.cc * src/reader.c (grammar_rule_check_and_complete): If a user uses her own skeleton but sets the language to C++, recognize it as C++. 2018-10-17 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-10-17 Akim Demaille version 3.1.90 * NEWS: Record release date. 2018-10-16 Akim Demaille examples: don't generate the position/stack files * examples/variant-11.yy, examples/variant.yy: Require 3.2. 2018-10-16 Akim Demaille gnulib: update 2018-10-16 Akim Demaille pacify syntax-checks * lib/lbitset.c, tests/c++.at: here. * cfg.mk: Add exceptions. 2018-10-16 Akim Demaille regen 2018-10-16 Akim Demaille generate the default action only for C++ This commit adds restrictions to what was done in 01898726e27c8cf64f8fcea7f26f8ce62f3f5cf2 [1]. Rici Lake [2] has shown that it's risky to disable the pre-action, at least now. Also, generating the default $$ = $1 action can have bad effects in some cases [3]. The original change [1] was prompted for C++. Let's try it there only, for a start. We could restrict it further to lalr1.cc with variants, but we need to see in the wild how this change behaves. And it is not unreasonable to expect grammar files in C++ to behave better wrt types. See [1] https://lists.gnu.org/archive/html/bison-patches/2018-10/msg00050.html [2] https://lists.gnu.org/archive/html/bison-patches/2018-10/msg00061.html [3] https://lists.gnu.org/archive/html/bison-patches/2018-10/msg00066.html * src/getargs.c: Style changes. * src/reader.c (grammar_rule_check_and_complete): Complete only for C++. 2018-10-16 Akim Demaille regen 2018-10-16 Akim Demaille C++: let %require "3.2" disable the generation of obsolete files The files stack.hh and position.hh are deprecated. Rather than devoting specify %define variables to discard them (api.position.file and api.stack.file), and rather than having to use special rules when api.location.file is used, let's simply decide that from %require "3.2" onwards, these files will not be generated. The only noticeable thing here is that, in order to be able to check the behavior of %require "3.2", to have this version (which is still 3.1-*) to accept %require "3.2". * src/gram.h, src/gram.c (required_version): New. * src/parse-gram.y (version_check): Set it. * src/output.c (prepare): Pass it m4. * data/bison.m4 (b4_required_version_if): Receive it and use it. * data/location.cc, data/stack.hh: Replace the api.*.file with only required version comparison. * tests/input.at: No longer check api.stack.file and api.position.file. * NEWS, doc/bison.texi: Don't mention them. Document the %require 3.2 behavior. * tests/output.at: Use %require 3.2 instead. 2018-10-15 Akim Demaille java: bump to Java SE 7 macOS 10.14 no longer supports versions of Java earlier than 5. And Java 6 will be deprecated by the end of this year. So let's move our requirement to Java 7. Reported by Yu Yijun. https://lists.gnu.org/archive/html/bug-bison/2018-09/msg00060.html Suggested by Paul Eggert and Bruno Haible. http://lists.gnu.org/archive/html/bug-gnulib/2018-10/msg00094.html * configure.ac: Require Java 7, both compiler and runtime. 2018-10-15 Akim Demaille doc: do not advertise %nterm Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html * NEWS, doc/bison.texi: here. 2018-10-14 Akim Demaille generate the default semantic action Currently, in C, the default semantic action is implemented by being always run before running the actual user semantic action. As a consequence, when the user action is run, $$ is already set as $1. In C++ with variants, we don't do that, since we cannot manipulate the semantic value without knowing its exact type. When variants are enabled, the only guarantee is that $$ is default contructed and ready to the used. Some users still would like the default action to be run with variants. Frank Heckenbach's parser in C++17 (http://lists.gnu.org/archive/html/bug-bison/2018-04/msg00011.html) provides this feature, but relying on std::variant's dynamic typing, which we forbid in lalr1.cc. The simplest seems to be actually generating the default semantic action (in all languages/skeletons). This makes the pre-action (that sets $$ to $1) useless. But... maybe some users depend on this, in spite of the comments that clearly warn againt this. So let's not turn this off just yet. * src/reader.c (grammar_rule_check_and_complete): Rename as... (grammar_rule_check_and_complete): this. Install the default semantic action when applicable. * examples/variant-11.yy, examples/variant.yy, tests/calc.at: Exercise the default semantic action, even with variants. 2018-10-14 Jannick xml2xhtml.xsl: add UTF-8 encoding To make arrows appear nicely in the browser. Currently it is shown as some garbled something in mine (Firefox). * data/xslt/xml2xhtml.xsl: here. 2018-10-14 Akim Demaille reader: reorder some calls to separate checks from assignments * src/reader.c (packgram): Move assignments to rules[ruleno] after the checks on the rule. 2018-10-14 Akim Demaille C++: style: add missing space before parens * data/c++.m4, data/lalr1.cc, data/stack.hh, data/variant.hh, * examples/variant-11.yy: here. 2018-10-14 Akim Demaille gnulib: update timevar See https://lists.gnu.org/archive/html/bug-gnulib/2018-10/msg00005.html. 2018-10-11 Akim Demaille style: modernize lib/vbitset.h 2018-10-11 Akim Demaille style: modernize lib/vbitset.c 2018-10-11 Akim Demaille style: modernize lib/lbitset.c 2018-10-11 Akim Demaille style: modernize lib/lbitset.h 2018-10-11 Akim Demaille style: modernize lib/ebitset.c 2018-10-11 Akim Demaille style: modernize lib/ebitset.h 2018-10-11 Akim Demaille style: modernize lib/bitsetv.c 2018-10-11 Akim Demaille style: modernize lib/bitsetv.h 2018-10-11 Akim Demaille style: modernize lib/bitsetv-print.c 2018-10-11 Akim Demaille style: modernize lib/bitsetv-print.h 2018-10-11 Akim Demaille style: modernize lib/bitset_stats.c 2018-10-11 Akim Demaille style: modernize lib/bitset_stats.h 2018-10-11 Akim Demaille style: modernize lib/bitset.c 2018-10-11 Akim Demaille style: modernize lib/bitset.h 2018-10-11 Akim Demaille style: modernize lib/bbitset.h 2018-10-11 Akim Demaille style: modernize lib/abitset.c 2018-10-10 Akim Demaille style: modernize lib/abitset.h 2018-10-09 Akim Demaille C++: issue a better CPP guard and Doxygen file command Currently we use "" as \file argument, and as base for the CPP guard. This is not nice when is absolute, in which case it is expected that the user will use api.location.include to get something nicer. If defined, use that name instead. * data/location.cc (b4_location_path): New. Use it. * tests/c++.at (Shared locations): Check the guard and Doxygen doc. 2018-10-09 Akim Demaille C++: remove stray empty line * data/stack.hh: here. 2018-10-09 Akim Demaille doc: spell check 2018-10-09 Akim Demaille doc: document api.*.file and the like * doc/bison.texi (Exposing the Location Classes): New. (%define Summary): Document api.location.file, api.location.include, api.stack.file and api.position.file. (C++ Bison Interface): stack.hh and position.hh are deprecated. 2018-10-07 Akim Demaille build: add missing gnulib libs * src/local.mk (LDADD): Here. 2018-10-07 Akim Demaille build: let timevar be dealt with by gnulib * lib/local.mk (lib_libbison_a_SOURCES): Remove timevar. 2018-10-07 Akim Demaille build: fix distcheck Now that distcheck no longer fails (see previous commit), let's address the shortcomings. * Makefile.am (CLEANDIRS, clean-local): New. * doc/local.mk, examples/calc++/local.mk, examples/local.mk, * examples/mfcalc/local.mk, examples/rpcalc/local.mk, * src/local.mk (CLEANDIRS): Get rid of Apple's *.dSYM directories. (CLEANFILES): Get rid of *.output files. * examples/variant-11.yy, examples/variant.yy: Don't generate any of the auxiliary files (location.hh and the like). 2018-10-07 Akim Demaille README: work around a nasty behavior of gettext `make update-po` runs: package_gnu="$(PACKAGE_GNU)"; \ test -n "$$package_gnu" || { \ if { if (LC_ALL=C find --version) 2>/dev/null | grep GNU >/dev/null; then \ LC_ALL=C find -L $(top_srcdir) -maxdepth 1 -type f \ -size -10000000c -exec grep 'GNU @PACKAGE@' \ /dev/null '{}' ';' 2>/dev/null; \ else \ LC_ALL=C grep 'GNU @PACKAGE@' $(top_srcdir)/* 2>/dev/null; \ fi; \ } | grep -v 'libtool:' >/dev/null; then \ package_gnu=yes; \ else \ package_gnu=no; \ fi; \ }; \ and based on the result, put GNU or not in the following line from bison.pot: # This file is distributed under the same license as the GNU bison package. It turns out that in my environment some log files had the 'GNU bison' string (note the lower case), but in distcheck, these files are no longer visible, so the generate bison.pot was different, and distcheck failed because we try to update bison.pot, which is read only in distcheck. The heuristics should look accept 'GNU Bison', not just 'GNU bison'. But let's please it to make sure we have our 'GNU'. * README: Mention 'GNU bison'. 2018-10-07 Akim Demaille NEWS: document api.*.file changes 2018-10-06 Akim Demaille c++: provide a means to control how location.hh is included Users may want to generate the location file elsewhere, say $top_srcdir/include/ast/location.hh. Yet, we should not generate `#include "$top_srcdir/include/ast/location.hh"` but probably something like `#include `, or `#include "ast/location.hh", or `#include `. It entirely depends on the compiler flags (-I/-isystem) that are used. Bison cannot guess what is expected, so let's give the user a means to tell how the location file should be included. * data/location.cc (b4_location_file): New. * data/glr.cc, data/lalr1.cc: Use it. 2018-10-06 Akim Demaille c++: support absolute api.location.file names In the case a user wants to create location.hh elsewhere, it can be helpful to define api.location.file to some possibly absolute path such as -Dapi.location.file='"$(top_srcdir)/include/ast/location.hh"'. Currently this does not work with `-o foo/parser.cc`, as we join foo/ and $(top_srcdir) together, the latter starting with slash. We should not try to do that in m4, manipulating file names is quite complex when you through Windows file name in. Let m4 delegate this to gnulib. * src/scan-skel.l (at_output): Accept up to two arguments. * data/bison.m4 (b4_output): Adjust. * tests/skeletons.at (Fatal errors but M4 continues producing output): Adjust to keep the error. * data/location.cc, data/stack.hh: Leave the concatenation to @output. * tests/output.at: Exercise api.location.file with an absolute path. 2018-10-06 Akim Demaille c++: when api.location.file is defined, don't generate stack.hh Make it easier to have fewer files. * data/stack.hh: Don't generate stack.hh when api.location.file is specified. * tests/calc++.at, tests/output.at: Adjust tests. 2018-10-06 Akim Demaille c++: make position.hh completely useless Let's put the definition of position into location.hh, there's no real value in keeping them separate: they are small, and share the same requirements. To help users transition to this new model, still generate position.hh by default, but as a simple include to location.hh. * data/location.cc (api.position.file): Accept only 'none' as possible value. (position.hh): Make it a stub. (location.hh): Adjust. (b4_position_define): Merge into... (b4_location_define): this. * data/glr.cc, data/lalr1.cc, tests/input.at, tests/output.at: Adjust. 2018-10-06 Akim Demaille c++: make stack.hh completely useless Let's completely deprecate stack.hh. Don't provide a means to give it a new name, allow only its removal. See https://lists.gnu.org/archive/html/bison-patches/2018-09/msg00151.html and https://lists.gnu.org/archive/html/bison-patches/2018-09/msg00182.html. * data/stack.hh: Reduce stack.hh to a simple comment explaining how to get rid of it. * data/lalr1.cc: Adjust * tests/input.at (%define file variables): Adjust. * tests/output.at: Remove cases where stack.hh was removed. 2018-10-06 Akim Demaille c++: add support for api.position.file and api.location.file * data/location.cc: Sort includes. (b4_position_file, b4_location_file): New. When there's a file for locations but not for positions, include the definition of position in the location file. * data/lalr1.cc (b4_shared_declarations): Include the position/location file when it exists. Otherwise, define the class. * data/glr.cc: Likewise. * tests/input.at (%define file variables): Check them. * tests/output.at (C++ output): Check various cases with api.position.file and api.location.file. 2018-10-06 Akim Demaille c++: provide control over the stack.hh file name It was not a good idea to generate the file stack.hh. It never was. But now we have to deal with backward compatibility: if we stop generating it, the build system of some build system will probably break. So offer the user a means to (i) decide what the name of the output file should be, and (ii) not generate this file at all (its content will be inline where the parser is defined). * data/lalr1.cc (b4_percent_define_check_file_complain) (b4_percent_define_check_file): New. * data/stack.hh: Generate the file only if api.stack.file is not empty. In that case, use it as file name. * data/lalr1.cc: Adjust to include the right file, or to include the definition of stack. * tests/calc.at, tests/output.at: Exercise api.stack.file. 2018-10-06 Akim Demaille tests: c++: don't fuse prefix and namespace They are not the same concept. It appears that we still consider that api.prefix is the default for api.namespace. We should stop that. * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Separate namespace and prefix. Adjust dependencies. 2018-10-06 Akim Demaille style: tests: factor file extension computations * tests/local.at (AT_LANG_HDR): New. * tests/calc.at, tests/headers.at, tests/synclines.at: Use it, and AT_LANG_EXT. 2018-10-06 Akim Demaille c++: style changes * data/lalr1.cc: Formatting changes. Remove duplicate definition of YY_NULLPTR. Add quotes to help Emacs track balanced parens. 2018-10-06 Akim Demaille lib: introduce xpath_join * lib/path-join.h, lib/path-join.c: New. * lib/local.mk: Adjust. * src/output.c: Use it. 2018-10-06 Akim Demaille CI: travis finally knows about llvm-toolchain-trusty-7 See https://github.com/travis-ci/apt-source-safelist/pull/392. 2018-10-06 Akim Demaille gnulib: update 2018-10-06 Akim Demaille doc: restore spello made on purpose 2018-10-05 Akim Demaille THANKS: add Josh Soref 2018-10-05 Josh Soref spelling: whether 2018-10-05 Josh Soref spelling: typedef 2018-10-05 Josh Soref spelling: troubleshooting 2018-10-05 Josh Soref spelling: transparent 2018-10-05 Josh Soref spelling: translated 2018-10-05 Josh Soref spelling: transitions 2018-10-05 Josh Soref spelling: transition 2018-10-05 Josh Soref spelling: tracking 2018-10-05 Josh Soref spelling: suppress 2018-10-05 Josh Soref spelling: succesful 2018-10-05 Josh Soref spelling: storage 2018-10-05 Josh Soref spelling: safely 2018-10-05 Josh Soref spelling: responsibility 2018-10-05 Josh Soref spelling: resources 2018-10-05 Josh Soref spelling: releases 2018-10-05 Josh Soref spelling: reduction 2018-10-05 Josh Soref spelling: reachable 2018-10-05 Josh Soref spelling: rawtoknumflag 2018-10-05 Josh Soref spelling: possibly 2018-10-05 Josh Soref spelling: persistent 2018-10-05 Josh Soref spelling: outputting 2018-10-05 Josh Soref spelling: otherwise 2018-10-05 Josh Soref spelling: occurrence 2018-10-05 Josh Soref spelling: namespace 2018-10-05 Josh Soref spelling: minimal 2018-10-05 Josh Soref spelling: invocations 2018-10-05 Josh Soref spelling: initialize 2018-10-05 Josh Soref spelling: incorrectly 2018-10-05 Josh Soref spelling: included 2018-10-05 Josh Soref spelling: illicit 2018-10-05 Josh Soref spelling: handling 2018-10-05 Josh Soref spelling: gratuitously 2018-10-05 Josh Soref spelling: grammar 2018-10-05 Josh Soref spelling: generation 2018-10-05 Josh Soref spelling: generate 2018-10-05 Josh Soref spelling: forewarn 2018-10-05 Josh Soref spelling: fnchange 2018-10-05 Josh Soref spelling: family 2018-10-05 Josh Soref spelling: extensions 2018-10-05 Josh Soref spelling: enum 2018-10-05 Josh Soref spelling: diagnostics 2018-10-05 Josh Soref spelling: determined 2018-10-05 Josh Soref spelling: detailed 2018-10-05 Josh Soref spelling: descriptive 2018-10-05 Josh Soref spelling: definitions 2018-10-05 Josh Soref spelling: declaration 2018-10-05 Josh Soref spelling: corrupted 2018-10-05 Josh Soref spelling: consuming 2018-10-05 Josh Soref spelling: consistently 2018-10-05 Josh Soref spelling: conflicts 2018-10-05 Josh Soref spelling: concatenation 2018-10-05 Josh Soref spelling: complete 2018-10-05 Josh Soref spelling: compatibility 2018-10-05 Josh Soref spelling: comparison 2018-10-05 Josh Soref spelling: combination 2018-10-05 Josh Soref spelling: characters 2018-10-05 Josh Soref spelling: builddir 2018-10-05 Josh Soref spelling: assoc 2018-10-05 Josh Soref spelling: appropriate 2018-10-05 Josh Soref spelling: alignment 2018-10-05 Josh Soref spelling: aggregate 2018-10-05 Josh Soref spelling: adjust 2018-10-05 Josh Soref spelling: additional 2018-10-05 Josh Soref spelling: accurately 2018-10-05 Akim Demaille README-hacking: details about make check-local 2018-10-05 Akim Demaille gnulib: update 2018-10-04 Akim Demaille main: fix error message for missing argument * src/getargs.c (getargs): Don't display any argv other that argv[0] when reporting a missing argument. * tests/bison.in: Neutralize path differences in stderr. * tests/input.at (Invalid number of arguments): New. 2018-09-30 Akim Demaille gnulib: move timevar to it * lib/timevar.c, lib/timevar.h, m4/timevar.m4: Remove. * gnulib: Update. * configure.ac: Adjust. * lib/timevar.def: Use lower case for the timevvars. Adjust dependencies. 2018-09-29 Akim Demaille style: comment changes * data/glr.cc, data/lalr1.cc: here. 2018-09-29 Akim Demaille gnulib: update 2018-09-29 Paul Eggert getargs: use LC_MESSAGES trick only on glibc * src/getargs.c (usage): Rely on setlocale (LC_MESSAGES, NULL) trick only on glibc, as POSIX does not specify the output of setlocale in this case, and the Gnulib localename module source code indicates that the trick works only on glibc. 2018-09-29 Paul Eggert uniqstr: avoid need for VLAs C11 no longer requires support for variable-length arrays, and VS2015 does not have them. Redo UNIQSTR_CONCAT to use a method that is simpler and better anyway. * src/uniqstr.c (uniqstr_vsprintf): Remove; no longer needed. * src/uniqstr.h (UNIQSTR_GEN_FORMAT, UNIQSTR_GEN_FORMAT_): * src/uniqstr.c (uniqstr_concat): New function. * src/uniqstr.h (UNIQSTR_CONCAT): Use it instead of using uniqstr_vsprintf. 2018-09-26 Akim Demaille doc: clean up the C++ section * doc/bison.texi: Minor fixes in typography. It is no longer require to pass --defines for C++ (it was addressed long ago). No longer refer to the `variant` define variable, it was replaced by `api.value.type variant`. Prefer nullptr to 0 for the null pointer. Use deftypeop for constructors. (Complete Symbols): Give the expected signature of yylex. Don't document the symbol_type constructors, as we want users to focus on make_TOKEN. Also show the case without locations. 2018-09-26 Akim Demaille CI: fixes for clang and asan Bison's test 464 (Syntax error as exception) fails on the CI. Do not use clang with asan on Ubuntu's libc++. https://bugs.llvm.org/show_bug.cgi?id=17379 * .travis.yml (Clang 7 libc++ and ASAN): New. (Clang 6 -O3 and libc++): Really use libc++. (Clang 5): Don't use libc++, nor asan (does not work either, same reason). 2018-09-24 Akim Demaille style: reduce scopes in muscle-tab.c 2018-09-24 Akim Demaille style: remove useless parens * data/bison.m4, data/glr.c, data/glr.cc, data/lalr1.cc, * data/lalr1.java, data/location.cc, data/yacc.c: Call b4_output_end without parens. 2018-09-24 Akim Demaille c++: fix warning message for automove * src/scan-code.l: Remove 'enabled'. Use only $k (numeric), even for named references, for clarity. * tests/c++.at: Adjust expectations. 2018-09-24 Akim Demaille style: minor refactoring * data/bison.m4: Formatting changes. * src/scan-code.l: Avoid loops, prefer standard string functions. (find_prefix_end): Be const correct. Avoid useless intermediate variables. (variant_add): Be const correct. (parse_ref): Prefer variable definitions to assignments. 2018-09-24 Akim Demaille CI: don't exit * .travis.yml: Prefer `false` to `exit`, as it completely ends the script (so we don't get the logs). 2018-09-24 Akim Demaille CI: really use Clang 3.3 and 3.4, not 5.0 * .travis.yml: Don't define CC/CXX, it does not work. Use `[[...]]` instead of `[...]`. Show the compiler versions. (Clang 3.3, Clang 3.4): Specify the path to avoid using /usr/local/clang-5.0.0/bin's clang. 2018-09-23 Akim Demaille CI: more compiler configurations * .travis.yml (GCC 8): Use sanitizers. (Clang 5 -O3): Remove, replaced by... (Clang 7 ASAN and libc++, Clang 6 -O3 and libc++): New. 2018-09-23 Akim Demaille build: rename and simplify the -std checks for C++ Too much code duplication. * m4/bison-cxx-std.m4: s/BISON_CXX_COMPILE_STDCXX/BISON_CXXSTD/. (BISON_CXXSTD): New. * configure.ac: Use it. 2018-09-23 Akim Demaille build: check for C++98 and 03 like the others * m4/bison-cxx-std.m4 (BISON_CXX_COMPILE_STDCXX_98) (BISON_CXX_COMPILE_STDCXX_03): New. * configure.ac: Use them. 2018-09-23 Akim Demaille build: use our own version of ax_check_link_flag The message on configure is misleading: checking whether the linker accepts -std=c++11... yes checking whether the linker accepts -std=c++14... yes checking whether the linker accepts -std=c++17... no It is the compiler that we check, not just the linker. * m4/ax_check_link_flag.m4: Remove. * m4/bison-check-compiler-flag.m4: New. * m4/bison-cxx-std.m4: Use it. 2018-09-23 Akim Demaille build: fix Autoconf macros to check for C++ standard flags * m4/bison-cxx-std.m4: Since now we link the program, we need a program: main was missing and linking was failing. 2018-09-23 Akim Demaille tests: fix a memory leak This has been bugging me for while. I was hard to reproduce: it worked only on GNU/Linux, probably because libc++ implements the small string optimization, while libstdc++ did not and actually allocated on the heap for this small string. See https://lists.gnu.org/archive/html/bison-patches/2018-09/msg00110.html. * tests/types.at (api.value.type): Do not provide a semantic value to EOF. 2018-09-22 Akim Demaille doc: work around Flex's use of 'register' The CI uses an old version of Flex. See 65fa634cdcfc5cf59b8b074670f488bba4df57cd. * doc/bison.texi (calc++/scanner.ll): Here. 2018-09-22 Akim Demaille timevar: don't declare getrusage if we don't use it This fails on MinGW. Reported by Simon Sobisch. http://lists.gnu.org/archive/html/bug-bison/2018-09/msg00058.html * lib/timevar.c: Don't provide default prototypes for functions we don't use. 2018-09-22 Akim Demaille timevar: get rid of a useless macro * lib/timevar.h (timevar_report): Rename as... (timevar_enabled): this. * lib/timevar.c (TIMEVAR_ENABLE): Remove. 2018-09-22 Akim Demaille timevar: introduce and use get_current_time * lib/timevar.c: here. Remove useless prototypes. (timevar_accumulate): Be const correct. 2018-09-22 Akim Demaille timevar: rename get_time as set_to_current_time * lib/timevar.c: here. 2018-09-22 Akim Demaille timevar: reduce scopes * lib/timevar.c: here. 2018-09-22 Akim Demaille timevar: document in the header, not in the implementation * lib/timevar.c: Move documentation from here... * lib/timevar.h: to there. 2018-09-22 Akim Demaille timevar: remove useless 'extern' for prototypes * lib/timevar.h, lib/timevar.c: here. 2018-09-22 Akim Demaille timevar: rename init_timevar as timevar_init * lib/timevar.h, lib/timevar.c: here. * src/main.c: Adjust. 2018-09-22 Akim Demaille timevar: we don't care about backward compatibility * lib/timevar.h, lib/timevar.c (get_run_time, print_time): Remove. 2018-09-22 Akim Demaille timevar: prefer #elif * lib/timevar.c: Use #if/#elif to be clearer about mutually exclusive cases. Indent CPP nested directives. 2018-09-22 Akim Demaille timevar: assume ANSI C Suggested by Bruno Haible. https://lists.gnu.org/archive/html/bug-gnulib/2018-09/msg00102.html * lib/timevar.c: Wow... This was still KnR C! 2018-09-22 Akim Demaille timevar: remove remains of GCC * lib/timevar.h, lib/timevar.c: Rename the header guard. Get rid of parts meant for GCC only. 2018-09-22 Akim Demaille news: c++: move semantics 2018-09-22 Akim Demaille c++: issue a warning with a value is moved several times Suggested by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2018-09/msg00022.html * src/scan-code.l (parse_ref): Check multiple occurrences of rhs values. * tests/c++.at (Multiple occurrences of $n and api.value.automove): New. 2018-09-22 Akim Demaille c++: introduce api.value.automove Based on work by Frank Heckenbach. See http://lists.gnu.org/archive/html/bug-bison/2018-04/msg00000.html and http://lists.gnu.org/archive/html/bug-bison/2018-09/msg00019.html. * data/lalr1.cc (b4_rhs_value): Use YY_MOVE api.rhs.automove is set. * doc/bison.texi (%define Summary): Document api.rhs.automove. * examples/variant-11.yy: Use it. * tests/local.at (AT_AUTOMOVE_IF): New. * tests/c++.at (Variants): Check move semantics. 2018-09-22 Akim Demaille tests: c++: use a custom string type The forthcoming automove feature, to be properly checked, will require that we can rely on the value of a moved-from string, which is not something the C++ standard guarantees. So introduce our own wrapper. Suggested by Frank Heckenbach. https://lists.gnu.org/archive/html/bison-patches/2018-09/msg00111.html * tests/c++.at (Variants): Introduce and use a new 'string' class. 2018-09-22 Akim Demaille tests: prepare a test for automove The 'Variants' tests are well suited to check support for move, and in particular for the forthcoming automove feature. But the tests were written to show the best practice in C++98, using swap: list "," item { std::swap ($$, $1); $$.push_back ($3); } This cannot work with std::move. So, make this example simpler, based on regular assignment instead of swap, which is a regression for C++98 (as the new traces show), but will be an improvement for modern C++ with automove. * tests/c++.at (Variants): Stop using swap. We don't generate a header file, so remove the 'require' code section. Adjust expectations. 2018-09-20 Akim Demaille style: reduce scopes in gram.c * src/gram.c: here. 2018-09-20 Akim Demaille style: reduce scopes in reduce.c * src/reduce.c: Here. 2018-09-20 Akim Demaille gnulib: update 2018-09-20 Akim Demaille build: work around ICC's limitations Several types of failures. First, unable to pass the file name properly to the linker. ./synclines.at:416: $CC $CFLAGS $CPPFLAGS $LDFLAGS -o \"\\\"\" \"\\\"\".c $LIBS stderr: ld: cannot open output file "/"": No such file or directory stdout: Unable to save under such a file name. ./synclines.at:421: $CXX $CXXFLAGS $CPPFLAGS -c $LDFLAGS -o \"\\\"\" \"\\\"\".cc $LIBS stderr: error: can't open file "/"" for write compilation aborted for "\"".cc (code 1) Spurious output because of warning flags is failed to reject as an error during configure: ./headers.at:343: $CXX $CXXFLAGS $CPPFLAGS $LDFLAGS c-only.o cxx-only.o -o c-and-cxx || exit 77 --- /dev/null 2018-09-18 21:21:37.745649000 +0000 +++ /home/travis/build/akimd/bison/tests/testsuite.dir/at-groups/222/stderr 2018-09-18 21:28:17.291919519 +0000 @@ -0,0 +1,7 @@ +icpc: command line warning #10006: ignoring unknown option '-Wcast-align' +icpc: command line warning #10006: ignoring unknown option '-fparse-all-comments' +icpc: command line warning #10006: ignoring unknown option '-Wdocumentation' +icpc: command line warning #10006: ignoring unknown option '-Wnull-dereference' +icpc: command line warning #10006: ignoring unknown option '-Wnoexcept' +icpc: command line warning #10006: ignoring unknown option '-fno-color-diagnostics' +icpc: command line warning #10006: ignoring unknown option '-Wno-keyword-macro' stdout: * tests/local.at (AT_SKIP_IF_CANNOT_LINK_C_AND_CXX): Also ignore stderr, as with ICC we get * tests/synclines.at (syncline escapes): Don't link the output. 2018-09-19 Akim Demaille doc: fix typo Introduced in the previous commit. * doc/bison.texi: here. 2018-09-19 Akim Demaille style: use midrule only, not mid-rule The code was already using midrule only, never mid_rule. This is simpler to remember, and matches a similar change we made from look-ahead to lookahead. * NEWS, doc/bison.texi, src/reader.c, src/scan-code.h, src/scan-code.l * tests/actions.at, tests/c++.at, tests/existing.at: here. 2018-09-19 Akim Demaille style: use _foo for private macros, not foo_ We use both styles, let's stick to a single one. Autoconf uses the prefix one, let's do the same. * data/bison.m4, data/c++.m4, data/c-like.m4, data/lalr1.cc, * data/variant.hh, data/yacc.c: Rename all the b4_*_ macros as _b4_*. 2018-09-19 Akim Demaille build: don't accept a broken standard lib for C++ On the CI, we had failures such as: ./c++.at:401: $PREPARSER ./list stderr: ./list: error while loading shared libraries: libc++.so.1: cannot open shared object file: No such file or directory because we accepted `-std=c++ -stdlib=libc++` although libc++ is not installed on the machine. * m4/ax_check_compile_flag.m4 (AX_CHECK_COMPILE_FLAG): Rewrite as... * m4/bison-check-compile-flag.m4 (BISON_CHECK_COMPILE_FLAG): this, so that we use AC_LINK_IFELSE to check the compiler (and its std lib) instead of AC_COMPILE_IFELSE. 2018-09-18 Paul Eggert doc: document older compiler issues * doc/bison.texi (Compiler Requirements for GLR): Rename from Compiler Requirements. (I can't build Bison): Add FAQ for older compilers. 2018-09-18 Akim Demaille glr.c: work around ICC limitations The CI is littered with # -*- compilation -*- 423. regression.at:907: testing Dancer %glr-parser ... ./regression.at:907: bison -fno-caret -o dancer.c dancer.y ./regression.at:907: $BISON_C_WORKS stderr: stdout: ./regression.at:907: $CC $CFLAGS $CPPFLAGS $LDFLAGS -o dancer dancer.c $LIBS stderr: icc: command line warning #10006: ignoring unknown option '-Wcast-align' icc: command line warning #10006: ignoring unknown option '-fparse-all-comments' icc: command line warning #10006: ignoring unknown option '-Wdocumentation' icc: command line warning #10006: ignoring unknown option '-Wnull-dereference' icc: command line warning #10006: ignoring unknown option '-Wbad-function-cast' icc: command line warning #10006: ignoring unknown option '-fno-color-diagnostics' icc: command line warning #10006: ignoring unknown option '-Wno-keyword-macro' dancer.c(755): error #1628: function declared with "noreturn" does return } ^ dancer.c(761): error #1628: function declared with "noreturn" does return } ^ compilation aborted for dancer.c (code 2) ICC sees that `longjmp(buf, 1);` does not return, it sees that `abort();` does not either, but fails to see it for `longjmp(buf, 1); abort();` * data/glr.c (YYLONGJMP): Be even clearer on the fact this does not return. 2018-09-18 Akim Demaille TODO: more 2018-09-18 Akim Demaille CI: change strategy to pass CXXFLAGS and the like Putting them in the env is useless. We don't want to pass `CPPFLAGS="$CPPFLAGS"` to configure, as it means "set it to nothing" when $CPPFLAGS is not set, which is not what we want. This correctly started to use libc++, but it is not installed on the Ubuntu. We will see later if we can use it. * .travis.yml: Define CONFIGUREFLAGS, and pass it to configure. 2018-09-18 Akim Demaille CI: also use GCC 4.7 and 4.8 * .travis.yml (matrix): here. 2018-09-18 Akim Demaille CI: name the items of the matrix * .travis.yml: here. 2018-09-18 Akim Demaille CI: also check with ICC * build-aux/install-icc.sh: New. * .travis.yml (icc): New. Use -k to get as many errors as possible from the start. * src/complain.c (warnings_types): Use a more precise type. 2018-09-18 Akim Demaille CI: be sure to exit on failures a807cfa6eb1a5362ead0b7c99bdc8fd2f4f896da completely broke the whole point of having a CI: we always exit with success! 2018-09-18 Akim Demaille build: strengthen the C++ standard flag test On the CI, we have this spurious failure with clang 3.9 with -std=c++17: In file included from list.y:23: In file included from /usr/include/c++/4.8/iostream:39: In file included from /usr/include/c++/4.8/ostream:38: In file included from /usr/include/c++/4.8/ios:42: In file included from /usr/include/c++/4.8/bits/ios_base.h:41: In file included from /usr/include/c++/4.8/bits/locale_classes.h:40: In file included from /usr/include/c++/4.8/string:52: In file included from /usr/include/c++/4.8/bits/basic_string.h:2815: In file included from /usr/include/c++/4.8/ext/string_conversions.h:43: /usr/include/c++/4.8/cstdio:120:11: error: no member named 'gets' in the global namespace using ::gets; ~~^ This shows that our test, based on gl_WARN_ADD, is a joke. We have to really check for at least a bit of C++. * m4/ax_check_compile_flag.m4, m4/bison-cxx-std.m4: New. * configure.ac: Use them to make sure the compiler actually works. 2018-09-18 Akim Demaille tests: fix memory leak This was reported by ASAN on the CI. * tests/types.at (api.value.type): Don't set a semantic value to EOF. 2018-09-18 Akim Demaille glr.c: prefer true/false to 1/0 in C++ * data/glr.c: here. 2018-09-18 Akim Demaille doc: work around Flex's use of 'register' The CI uses an old version of Flex. * doc/bison.texi (calc++/scanner.ll): Here. 2018-09-18 Akim Demaille tests: fight G++ warnings about zero as null pointer constant In C++ pre C++11 it is standard practice to use 0 for the null pointer. But GCC pre 8 -std=c++98 with -Wzero-as-null-pointer-constant warns about this. So disable -Wzero-as-null-pointer-constant when compiling C++ pre 11. Let's do this in AT_DATA_SOURCE_PROLOGUE (which is pasted on top of all the test grammar files). Unfortunately, that shifts all the locations in the expected error messages, which would be too noisy. Instead, let's introduce testsuite.h, which can vary in length, and include it in AT_DATA_SOURCE_PROLOGUE. * tests/testsuite.h: New. Disable -Wzero-as-null-pointer-constant's warning with GCC pre 8, C++ pre 11. * tests/local.at (AT_DATA_SOURCE_PROLOGUE): Use it. * tests/atlocal.in (CPPFLAGS): Find it. * tests/local.mk: Ship it. * data/c.m4 (YY_NULLPTR): Prefer ((void*)0) to 0 in C. 2018-09-18 Akim Demaille CI: make sure `git describe` works For some reasons, the checkout on travis may not have any tags, so `git describe` fails, so bootstrap fails. * .travis.yml: If git describe fails, install some tag. 2018-09-18 Akim Demaille CI: install Doxygen * .travis.yml: here, so that its tests are not skipped. Remove valgrind: it's too expensive on the CI, and asan does the job. 2018-09-16 Akim Demaille style: prefer %D% in Automake files * tests/local.mk: Prefer %D%/ to tests/. 2018-09-15 Akim Demaille style: reduce scopes in complain.c 2018-09-15 Akim Demaille style: reduce scopes in tables.c * src/tables.c: here. * src/state.h: Formatting changes. 2018-09-15 Akim Demaille style: reduce scopes in graphviz.c 2018-09-15 Akim Demaille style: reduce scopes in LR0.c 2018-09-15 Akim Demaille style: reduce scopes in print_graph.c * src/print_graph.c: here. 2018-09-15 Akim Demaille doc: formatting changes * doc/bison.texi: No changes in the output. 2018-09-13 Akim Demaille tests: run the C++ tests on all the available standards This is much of course more efficient than in the matrix of the CI (or on our own machines), but a bit more tedious. * configure.ac (CXX03_CXXFLAGS, CXX11_CXXFLAGS, CXX14_CXXFLAGS) (CXX17_CXXFLAGS, CXX2A_CXXFLAGS, STDCXX_FLAGS): New. * tests/atlocal.in: Receive them. * tests/local.at (AT_FOR_EACH_CXX): New. * tests/c++.at: Use AT_FOR_EACH_CXX. 2018-09-13 Akim Demaille tests: allow to override variables with envvars * tests/atlocal.in: Allow the user to change interesting variables (CFLAGS, CXXFLAGS, etc.). 2018-09-13 Akim Demaille lalr1.cc: modern C++ no longer needs an assignment for symbols Reported by Frank Heckenbach. http://lists.gnu.org/archive/html/bug-bison/2018-03/msg00002.html Actually the assignment operator should never be needed: the C++98 requirements for vector::push_back is CopyInsertable, which does not require an assignment operator. However, libstdc++ shipped with GCC up to (and including) 6 uses the assignment operator (which affects Clang on top of libstdc++, but also ICC). So let's keep it for legacy C++. See https://gcc.godbolt.org/z/q0XXmC. * data/lalr1.cc (stack_symbol_type::operator=): Remove. * data/c++.m4 (basic_symbol::operator=): Ditto. * tests/c++.at (C++ Variant-based Symbols Unit Tests): Adjust. 2018-09-13 Akim Demaille lalr1.cc: support move semantics Modern C++ (i.e., C++11 and later) introduced "move only" types: types such as std::unique_ptr that can never be duplicated. They must never be copied (by assignments and constructors), they must be "moved". The implementation of lalr1.cc used to copy symbols (including their semantic values). This commit ensures that values are only moved in modern C++, yet remain compatible with C++98/C++03. Suggested by Frank Heckenbach, who provided a full implementation on top of C++17's std::variant. See http://lists.gnu.org/archive/html/bug-bison/2018-03/msg00002.html, and https://lists.gnu.org/archive/html/bison-patches/2018-04/msg00002.html. Symbols (terminal/non terminal) are handled by several functions that used to take const-refs, which resulted eventually in a copy pushed on the stack. With modern C++ (C++11 and later) the callers must use std::move, and the callees must take their arguments as rvalue refs (foo&&). In order to avoid duplicating these functions to support both legacy C++ and modern C++, let's introduce macros (YY_MOVE, YY_RVREF, etc.) that rely on copy-semantics for C++98/03, and move-semantics for modern C++. That's easy for inner types, when the parser's functions pass arguments to each other. Functions facing the user (make_NUMBER, make_STRING, etc.) should support both rvalue-refs (for instance to support move-only types: make_INT (std::make_unique (1))), and lvalue-refs (so that we can pass a variable: make_INT (my_int)). To avoid the multiplication of the signatures (there is also the location), let's take the argument by value. See: https://lists.gnu.org/archive/html/bison-patches/2018-09/msg00024.html. * data/c++.m4 (b4_cxx_portability): New. (basic_symbol): In C++11, replace copy-ctors with move-ctors. In C++11, replace copies with moves. * data/lalr1.cc (stack_symbol_type, yypush_): Likewise. Use YY_MOVE to avoid useless copies. * data/variant.hh (variant): Support move-semantics. (make_SYMBOL): In C++11, in order to support both read-only lvalues, and rvalues, take the argument as a copy. * data/stack.hh (yypush_): Use rvalue-refs in C++11. * tests/c++.at: Use move semantics. * tests/headers.at: Adjust to the new macros (YY_MOVE, etc.). * configure.ac (CXX98_CXXFLAGS, CXX11_CXXFLAGS, CXX14_CXXFLAGS) (CXX17_CXXFLAGS, ENABLE_CXX11): New. * tests/atlocal.in: Receive them. * examples/variant.yy: Don't define things in std. * examples/variant-11.test, examples/variant-11.yy: New. Check the support of move-only types. * examples/README, examples/local.mk: Adjust. 2018-09-12 Akim Demaille tests: factor the definition of full compilation * tests/local.at (AT_LANG_EXT): New. (AT_FULL_COMPILE): Simplify. 2018-09-10 Akim Demaille CI: use clang with libc++ GCC uses libstdc++. Let's also check libc++. * .travis.yml: here. 2018-09-10 Akim Demaille CI: use address sanitizer * .travis.yml (matrix): Use the latest (available) clang with asan. 2018-09-10 Akim Demaille CI: sort the matrix in reverse-chronological There are only three builds at a time: show the result of modern compilers first. * .travis.yml (matrix): Sort in reverse-chronological. 2018-09-10 Akim Demaille build: use -fparse-all-comments with -Wdocumentation Clang checks only /** ... */ comments without this flag. * configure.ac (warn_common): Also check -fparse-all-comments. 2018-09-09 Akim Demaille TODO: minor updates 2018-09-09 Akim Demaille build: fix support for --disable-dependency-tracking Reported by Juan Manuel Guerrero. https://lists.gnu.org/archive/html/bug-bison/2014-07/msg00000.html. * examples/local.mk (%D%/extracted.stamp): Make sure the output directory exists. * examples/extexi (process): Likewise. 2018-09-09 Akim Demaille configure.ac: fix definition of NO_EXCEPTIONS_CXXFLAGS * configure.ac: Always define it, not just when --enable-gcc-warnings is passed. 2018-09-09 Akim Demaille skeletons: style/comment changes * data/c++.m4, data/c.m4, data/glr.c: Here. 2018-09-09 Akim Demaille variant: indent better the generated code * data/variant.hh (b4_basic_symbol_constructor_declare) (b4_basic_symbol_constructor_define): here. 2018-09-09 Akim Demaille lalr1.cc: don't generate useless constructors when variant is used This generates less code, which is nicer to read, but also takes less chances with compilers such as G++ 4.8 that are too strict and check "dead code" (templated code that is not instantiated). * data/c++.m4 (b4_symbol_type_declare, b4_symbol_type_define): When variants are used, don't generate code meant for non variants. 2018-09-09 Akim Demaille CI: Clang 6.0 is not available But Clang 3.3 and 3.4 are. * .travis.yml (addons): Remove, it appears to be ignore if the matrix also defines it. (matrix): Update. 2018-09-08 Akim Demaille build: work around warnings in Flex See ea0db44fedc8d5cbdc5c3180bef0285d7ae83803. We also need to disable the warning in the examples (but don't want to clutter the documentation with such details). * doc/bison.texi (scanner.ll): Disable Clang's -Wdocumentation. While at it, hide the other kludges. 2018-09-08 Akim Demaille CI: more compiler configurations * .travis.yml: here. 2018-09-08 Akim Demaille configure: reveal the name of the Valgrind suppression file we use * configure.ac: here. * build-aux/Linux.valgrind (libstdcxx_init): New. 2018-09-08 Akim Demaille build: work around warnings in Flex 2.5.35 That's the version on Ubuntu Precise. See also 1dac131ec45ffa1e382319a94640c65bd10f6aa5. * src/flex-scanner.h: Disable -Wdocumentation. * doc/bison.texi: Turn off a warning triggered by Flex 2.6.4. 2018-09-08 Akim Demaille CI: show the version of the tools we use We have failures on Flex output, which are probably related to an old release. Let's check. In file included from src/scan-code-c.c:3: src/scan-code.c:2198:21: error: empty paragraph passed to '@param' command [-Werror,-Wdocumentation] * @param line_number ~~~~~~~~~~~~~~~~~^ * .travis.yml: here. 2018-09-08 Akim Demaille CI: run more maintainer tests and show the logs Running all these tests might be overkill: it is very long, and don't need full portability checks. Besides, some tests under Valgrind are too slow and get killed by the CI (timeout of 10min without output). * .travis.yml: here. 2018-09-08 Akim Demaille CI: enable compiler warnings * .travis.yml: here. * README-hacking: We no longer aim at K&R C. 2018-09-06 Akim Demaille build: work around GCC warnings on Flex code See ef98967ada3c1cd48c177d7349e65a709bb49b97. * src/flex-scanner.h: Disable -Wnull-dereference for GCC 6+. 2018-09-06 Akim Demaille tests: fix target naming convention We have some maintainer-check-foo and some maintainer-foo-check. Keep only the former. * tests/local.mk (maintainer-push-check, maintainer-xml-check) (maintainer-release-check): Rename as... (maintainer-check-push, maintainer-check-xml) (maintainer-check-release): these. 2018-09-06 Akim Demaille tests: fix variable naming convention Most of our variables for C++ flags are named FOO_CXXFLAGS, not CXXFLAGS_FOO. * configure.ac, tests/atlocal.in, tests/calc.at (NO_EXCEPTIONS_CXXFLAGS): Rename as... (CXXFLAGS_NO_EXCEPTIONS): this. 2018-09-06 Akim Demaille tests: fix maintainer-check-g++ make recipe Clang++ issues warnings when it's used to compile C. This make target is precisely checking whether we can do that. * configure.ac (NO_DEPRECATED_CXXFLAGS): New. * tests/atlocal.in: Use it. 2018-09-06 Akim Demaille tests: fix maintainer-check-valgrind make recipe * tests/local.mk (maintainer-check-valgrind): Run the with Valgrind when it's available, not the converse. 2018-09-06 Akim Demaille CI: prepare for travis * .travis.yml: New. 2018-09-06 Akim Demaille examples: beware of shell portability issues This completes 2d7e7438024e47650c3a0c9f5f313c6eb6acae2d. Some shells don't grok "local var=`cmd`" very well: they need the rhs to be quoted. ./examples/test: 72: local: you.,: bad variable name FAIL examples/variant.test (exit status: 2) Reported by Étienne Renault. * examples/test (run): Quote the values in 'local' assignments. 2018-09-04 Akim Demaille tests: style changes * tests/c++.at: Formatting changes. Use 'using' to shorten the code. 2018-09-02 Akim Demaille tests: disable GCC7 warnings for some tests With GCC7 we have warnings (false positive): x8.c: In function 'x8_parse': x8.c:1233:16: error: 'yylval' may be used uninitialized in this function [-Werror=maybe-uninitialized] yylval = *yypushed_val; ~~~~~~~^~~~~~~~~~~~~~~ x8.c: In function 'x8_pull_parse': x8.c:1233:16: error: 'yylval' may be used uninitialized in this function [-Werror=maybe-uninitialized] yylval = *yypushed_val; ~~~~~~~^~~~~~~~~~~~~~~ See also 9645a2b20ee7cbfa8bb4ac2237f87d598afe349c. * tests/local.at (AT_PUSH_IF): New. (AT_BISON_OPTION_POPDEFS): Pop it, and pop AT_PURE_IF. * tests/headers.at (Several parsers, Several parsers): Disable these warnings when in push parser. 2018-09-02 Akim Demaille C++: don't issue the definition of symbol_type when not used Currently, in glr.cc, we emit the definitions of basic_symbol and symbol_type, although there are not used. * data/c++.m4 (b4_public_types_declare): Extract these definitions from here, and move them... (b4_symbol_type_declare): here. (b4_public_types_declare): Also remove the definition of the symbol constructors. * data/lalr1.cc (b4_shared_declarations): Adjust: call b4_symbol_type_declare and b4_symbol_constructor_declare. 2018-09-02 Akim Demaille examples: beware of shell portability issues Some shells don't grok `local var=$val` very well: they need the rhs to be quoted. ./examples/test: 66: local: you.,: bad variable name FAIL examples/variant.test (exit status: 2) Reported by Étienne Renault. * examples/test (run): Quote the values in 'local' assignments. 2018-08-31 Akim Demaille C++: leave 'inline' on the definition, not the declaration This is for consistency with the other uses of 'inline' in the C++ skeletons. On examples/variant.yy, this change gives: --- examples/variant.hh 2018-08-31 07:16:57.214222580 +0200 +++ examples/variant.hh 2018-08-31 07:19:52.285431997 +0200 @@ -444,15 +444,15 @@ typedef basic_symbol symbol_type; // Symbol constructors declarations. - static inline + static symbol_type make_END_OF_FILE (const location_type& l); - static inline + static symbol_type make_TEXT (const ::std::string& v, const location_type& l); - static inline + static symbol_type make_NUMBER (const int& v, const location_type& l); @@ -945,19 +945,23 @@ }; return static_cast (yytoken_number_[type]); } + // Implementation of make_symbol for each symbol type. + inline parser::symbol_type parser::make_END_OF_FILE (const location_type& l) { return symbol_type (token::END_OF_FILE, l); } + inline parser::symbol_type parser::make_TEXT (const ::std::string& v, const location_type& l) { return symbol_type (token::TEXT, v, l); } + inline parser::symbol_type parser::make_NUMBER (const int& v, const location_type& l) { @@ -967,7 +971,7 @@ } // yy -#line 971 "examples/variant.hh" // lalr1.cc:380 +#line 975 "examples/variant.hh" // lalr1.cc:380 and no changes on variant.cc. * data/c++.m4 (b4_public_types_define): Formatting changes. * data/variant.hh (b4_symbol_value_template_, b4_symbol_constructor_declare_): Move the 'inline' from declaration to implementation. 2018-08-30 Akim Demaille c++: style changes Instead of parser::stack_symbol_type::stack_symbol_type (const stack_symbol_type& that) : super_type (that.state, that.location) { value = that.value; } generate parser::stack_symbol_type::stack_symbol_type (const stack_symbol_type& that) : super_type (that.state, that.value, that.location) {} * data/lalr1.cc (stack_symbol_type): Improve the copy ctor, when not using the variants. (yypush_): Rename arguments for clarity. 2018-08-30 Akim Demaille c++: the assignment operator does not have to be const * data/lalr1.cc (stack_symbol_type::operator=): Don't copy the argument, move it. 2018-08-30 Akim Demaille tests: style changes * tests/c++.at (C++ Variant-based Symbols): Rename as... (C++ Variant-based Symbols Unit Tests): this. Comment/style changes. 2018-08-27 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-08-27 Akim Demaille version 3.1 * NEWS: Record release date. 2018-08-27 Akim Demaille build: tabs are ok in a Makefile * cfg.mk: TABs are ok in examples/calc++/Makefile. 2018-08-26 Akim Demaille C++: make sure the generated header is self container See the previous commit. * data/lalr1.cc: Be sure to define YY_NULLPTR. * tests/headers.at: Check the case that was failing. 2018-08-26 Akim Demaille tests: check that headers are sane The header generated for variants with assertions but without locations, is not self-contained. Prepare a check for this. * tests/headers.at (Sane headers): New, extracted from... (Several parsers): here. 2018-08-25 Akim Demaille "C++: restore copy-constructor for stack_symbol_type Benchmarks show that it is more efficient to keep this copy constructor, rather than forcing the use of the default constructor and then assignment. This reverts commit 7ab25ad0208d00f509613e1e151aa3043cf2862f. 2018-08-25 Akim Demaille examples: calc++: a Makefile and a README * examples/calc++/Makefile, examples/calc++/README: New. * examples/calc++/local.mk: Ship and install them. * doc/bison.texi: Formatting changes. 2018-08-25 Akim Demaille gnulib: update 2018-08-25 Jiahao Li variant: fix uninitialized memory access in `variant<>` Currently, in bison's C++ parser template (`lalr.cc`), the `variant<>` struct's `build()` method uses placement-new in the form `new (...) T` to initialize a variant type. However, for POD variant types, this will leave the memory space uninitialized. If we subsequently tries to `::move` into a variant object in such state, the call can trigger clang's undefined behavior sanitizer due to accessing the uninitialized memory. https://lists.gnu.org/archive/html/bison-patches/2018-08/msg00098.html * data/variant.hh (build): Always initialize the stored value. 2018-08-24 Akim Demaille NEWS: update 2018-08-24 Akim Demaille examples: calc++: minor improvements * doc/bison.texi (A Complete C++ Example): Prefer throw exceptions from the scanner. Show the invalid characters. Since the scanner sends exceptions, it no longer needs to report errors, so we can get rid of the driver's routine to report error, do it in yyerror. Use @group/@end group to improve rendering. 2018-08-24 Akim Demaille examples: calc++: make sure the file name in location is set Reported by Hans Åberg. http://lists.gnu.org/archive/html/bug-bison/2018-08/msg00039.html * doc/bison.texi (A Complete C++ Example): Move the token's location from the scanner to the driver. 2018-08-24 Akim Demaille examples: calc++: remove prefixes This example uses the calcxx_ prefix for each class. That's uselessly heavy. * doc/bison.texi (A Complete C++ Example): Simplify the class names. Since now 'driver' denotes the class, use 'drv' for the values. Formatting changes. 2018-08-23 Akim Demaille examples: fix the leading empty line * examples/extexi: Really avoid the first empty line. Remove useless `next`. 2018-08-23 Akim Demaille examples: shorten the name of the calc++ files * doc/bison.texi: Turn the calc++- prefix into calc++/. * examples/extexi (%file_wanted): Replace with (&file_wanted): this. * examples/calc++/local.mk: Adjust. 2018-08-23 Akim Demaille tests: disable -Wmaybe-uninitialized in some tests On these tests, at -O2 and above, GCC 8 complains that yylval may be uninitialized. But it seems wrong: it is initialized. Rather than turning off the warning in the skeleton (hence possibility hiding relevant warnings of user parsers), let's turn it off in the tests only. 163: parse.error=verbose and consistent errors: FAILED (conflicts.at:625) 165: parse.error=verbose and consistent errors: lr.default-reduction=consistent FAILED (conflicts.at:635) 166: parse.error=verbose and consistent errors: lr.default-reduction=accepting FAILED (conflicts.at:641) 167: parse.error=verbose and consistent errors: lr.type=canonical-lr FAILED (conflicts.at:645) 168: parse.error=verbose and consistent errors: parse.lac=full FAILED (conflicts.at:650) 169: parse.error=verbose and consistent errors: parse.lac=full lr.default-reduction=accepting FAILED (conflicts.at:655) We get: input.c: In function 'yyparse': input.c:980:9: error: 'yylval' may be used uninitialized in this function [-Werror=maybe-uninitialized] YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default); ^~~~~~ cc1: all warnings being treated as errors See https://lists.gnu.org/archive/html/bison-patches/2018-08/msg00063.html. * tests/conflicts.at (AT_CONSISTENT_ERRORS_CHECK): Disable -Wmaybe-uninitialized. 2018-08-19 Akim Demaille doc: clarify that the push parser object can be reused Suggested by Rici Lake. https://lists.gnu.org/archive/html/bug-bison/2018-08/msg00033.html * doc/bison.texi: Complete description of the first node in the main @menu. (Push Decl): Remove the 'experimental' warnings about push parser. Clarify that the push parser object can be reused in several parses. 2018-08-19 Akim Demaille lalr1.cc: support compilation with disabled support for exceptions Reported by Brooks Moses http://lists.gnu.org/archive/html/bison-patches/2018-02/msg00000.html * data/lalr1.cc (YY_EXCEPTIONS): New. Use it to disable try/catch clauses. * doc/bison.texi (C++ Parser Interface): Document it. * configure.ac (CXXFLAGS_NO_EXCEPTIONS): New. * tests/atlocal.in: Receive it. * tests/local.at (AT_FULL_COMPILE, AT_LANG_COMPILE): Accept a new argument, extra compiler flags. * tests/calc.at: Run the C++ calculator with exception support disabled. 2018-08-19 Akim Demaille examples: add empty lines Currently the examples are too dense, let's put empty lines where '#line' would be issued. And also remove some spurious empty lines (remains from @group, @end group, etc.). * examples/extexi: Do that. * examples/local.mk (extexiFLAGS): Rename as... (EXTEXIFLAGS): this. 2018-08-19 Akim Demaille examples: check the variant example * examples/mfcalc/local.mk, examples/rpcalc/local.mk: Define the programs in a more natural order, source, preproc, then linker. * examples/test: Be ready to work on programs that are not in a subdir. * examples/variant.test: New. * examples/local.mk: Use it. * examples/variant.yy: Don't use 0 for nullptr. Use a more natural output for a list of string. 2018-08-18 Akim Demaille C++: fix portability issue with MSVC 2017 Visual Studio issues a C4146 warning on '-static_cast(rhs)'. The code is weird, probably to cope with INT_MIN. Let's go back to using std::max (whose header is still included in position.hh...) like originally, but with the needed casts. Reported by 長田偉伸, and with help from Rici Lake. See also http://lists.gnu.org/archive/html/bug-bison/2013-02/msg00000.html and commit 75ae8299840bbd854fa2474d38402bbb933c6511. * data/location.cc (position::add_): Take min as an int. Use std::max. While here, get rid of a couple of useless inlines. 2018-08-18 Akim Demaille build: fix concurrent build failure Reported by Dengke Du and Robert Yang. https://lists.gnu.org/archive/html/bison-patches/2017-07/msg00000.html * src/local.mk (src/yacc): Make sure the directory exists. 2018-08-18 Akim Demaille lalr1.cc: remove debug comment * data/lalr1.cc: Remove a comment about indentation. I'm not sure it would be nice to indent even more, it's already quite of the right. 2018-08-18 Akim Demaille doc: fix the name of the GFDL section Reported by dine <2500418497@qq.com>. http://lists.gnu.org/archive/html/bug-bison/2016-10/msg00000.html I mirrored what the Coreutils do. * doc/bison.texi (Copying This Manual): Rename as... (GNU Free Documentation License): this, since that the name we used in the preamble. 2018-08-18 Akim Demaille doc: clarify the destructor selection example Reported by Gary L Peskin. http://lists.gnu.org/archive/html/help-bison/2016-02/msg00000.html * doc/bison.texi (Destructor Decl): here. 2018-08-18 Akim Demaille portability: don't use _Pragma with ICC ICC defines __GNUC__ [1], but does not support GCC's _Pragma for diagnostics. As a matter of fact, I believe it does not support _Pragma at all (only #pragma) [2]. Reported by Maxim Prohorenko. https://savannah.gnu.org/support/index.php?108339 [1] https://software.intel.com/en-us/cpp-compiler-18.0-developer-guide-and-reference-gcc-compatibility-and-interoperability [2] https://software.intel.com/en-us/cpp-compiler-18.0-developer-guide-and-reference-pragmas * data/c.m4 (YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN): Exclude ICC from the club. 2018-08-18 Akim Demaille doc: typed mid-rule actions * doc/bison.texi (Mid-Rule Actions): Restructure to insert... (Typed Mid-Rule Actions): this new section. Move the manual translation of mid-rule actions into regular actions to... (Mid-Rule Action Translation): here. 2018-08-18 Akim Demaille escape properly the file names in #line for printer/destructor Reported by Jannick. http://lists.gnu.org/archive/html/bug-bison/2017-05/msg00001.html "Amusingly" enough, we have the same problem with %defines when the parser file name has backslashes or quotes: we generate #includes with an incorrect C string. * src/output.c (prepare_symbol_definitions): Escape properly the file names before passing them to M4. * data/bison.m4, data/lalr1.cc: Don't simply put the file name between two quotes (that should have been strong enough a smell...), expect the string to be properly quoted. * tests/synclines.at: New tests to check this. 2018-08-18 Akim Demaille tests: fix title and improve quoting * tests/synclines.at: here. Also, prefer '%code' to ;%{...%}' for yylex/yyerror prototypes. 2018-08-18 Akim Demaille style: reduce scopes * src/output.c: here. 2018-08-18 Akim Demaille style: reduce scopes * src/scan-code.l: here. 2018-08-18 Akim Demaille regen 2018-08-18 Akim Demaille style: reduce scopes * src/parse-gram.y: Declare iterator within the for-loop. 2018-08-18 Akim Demaille tests: style changes * tests/c++.at, tests/local.at: Formatting and title changes. 2018-08-17 Akim Demaille reader: simplify the search of the start symbol Suggested by Paul Eggert. * src/reader.c (find_start_symbol): Don't check 'res', we know it is not null. That suffices to avoid the GCC warnings. * bootstrap.conf: We don't need 'assume', which doesn't exist anyway. 2018-08-15 Akim Demaille c++: fix GCC8 warnings about uninitialized values In 0931d14728fb4a2272399f2c927ae78e2607b4fb I removed too many initializations from some ctors: some were not about base ctors, but about member variables. In fact, more of them were missing to please GCC 8. While at it, generate more natural code for C++ without variant: instead of template parser::basic_symbol::basic_symbol (const basic_symbol& other) : Base (other) , value () { value = other.value } generate template parser::basic_symbol::basic_symbol (const basic_symbol& other) : Base (other) , value (other.value) {} * data/c++.m4 (basic_symbol::basic_symbol): Always initialize 'value', it might be a POD without a ctor. * data/lalr1.cc (stack_symbol_type::stack_symbol_type): Likewise. * data/variant.hh (variant::variant): Default initialize the buffer too. 2018-08-15 Akim Demaille tests: style: use %empty * tests/conflicts.at: here. 2018-08-15 Akim Demaille tests: fix warnings in push mode Fix warning with GCC 8, -DNDEBUG. 422. push.at:83: testing Multiple impure instances ... input.y: In function 'main': input.c:1022:12: error: potential null pointer dereference [-Werror=null-dereference] if (!yyps->yynew && yyps->yyss != yyps->yyssa) ~~~~^~~~~~~ * data/yacc.c (pstate_delete): Do nothing if called on null pointer. 2018-08-15 Akim Demaille c++: avoid GCC 8 warnings GCC 8 issues warnings whose root cause was a bit hard to find. calc.cc: In member function 'virtual int yy::parser::parse()': calc.cc:810:18: warning: '*((void*)& +8)' may be used uninitialized in this function [-Wmaybe-uninitialized] , location (l) ^ calc.cc: In member function 'void yy::parser::yypush_(const char*, yy::parser::stack_symbol_type&)': calc.cc:810:18: warning: '*((void*)& +8)' may be used uninitialized in this function [-Wmaybe-uninitialized] , location (l) ^ calc.cc: In member function 'void yy::parser::yypush_(const char*, yy::parser::state_type, yy::parser::symbol_type&)': calc.cc:810:18: warning: '*((void*)& +8)' may be used uninitialized in this function [-Wmaybe-uninitialized] , location (l) ^ The problem is with locations that don't have a constructor, such as Span (in calc.cc) which is POD. It is POD on purpose: so that we can use that structure to test glr.cc which cannot use non POD in its (C) stacks. * data/c++.m4 (basic_symbol): Also ensure that 'location' is initialized. 2018-08-15 Akim Demaille tests: avoid compiler warnings * tests/calc.at (AT_CALC_MAIN): Declare yyparse and operator<< in an unnamed namespace to avoid "not declared" warnings (clang -Weverything). Remove useless prototypes. 2018-08-15 Akim Demaille build: work around GCC warnings on Flex code With GCC 7.3.0 and Flex 2.6.4, we get warnings on all the generated scanners: examples/calc++/calc++-scanner.cc: In function 'void yyrestart(FILE*)': examples/calc++/calc++-scanner.cc:1611:20: error: potential null pointer dereference [-Werror=null-dereference] /* %endif */ ~~~~~~~~~~~ ^ examples/calc++/calc++-scanner.cc:1607:19: error: potential null pointer dereference [-Werror=null-dereference] /* %if-c-only */ ~~~~~~~~~~~~~~~ ^ examples/calc++/calc++-scanner.cc:1611:20: error: potential null pointer dereference [-Werror=null-dereference] /* %endif */ ~~~~~~~~~~~ ^ examples/calc++/calc++-scanner.cc:1607:19: error: potential null pointer dereference [-Werror=null-dereference] /* %if-c-only */ ~~~~~~~~~~~~~~~ ^ cc1plus: all warnings being treated as errors Obviously the lines are incorrect, and the warnings are emitted twice. Still, let's get rid of these warnings. * doc/bison.texi, src/flex-scanner.h: Disable these warnings in code generated by Flex. 2018-08-15 Akim Demaille fix incorrect C code Commit 3df32101e7978eaafa63bce8908de3dcae4d9cda introduced invalid C code. Caught by GCC 7.3.0. * bootstrap.conf (gnulib_modules): We need assume. * src/reader.c (find_start_symbol): Fix the signature (too much C++, sorry...). Prefer 'assume' to 'assert', so that we don't have these warnings even when NDEBUG is defined. 2018-08-14 Akim Demaille examples: fix Englishoes * examples/README: Fix my mistakes. 2018-08-14 Akim Demaille examples: ship and install variant.yy This file was meant to be shown as an example. Install it. * README, data/README: Put Emacs metadata in the final section. * examples/README: New. * examples/variant.yy: Use %empty. * examples/local.mk: Install both these files. 2018-08-14 Akim Demaille C++: remove useless copy-constructor We currently generate copy constructors such as the following one (taken from examples/variant.yy): parser::stack_symbol_type::stack_symbol_type (const stack_symbol_type& that) : super_type (that.state, that.location) { switch (that.type_get ()) { case 3: // TEXT case 8: // item value.copy< ::std::string > (that.value); break; case 7: // list value.copy< ::std::vector > (that.value); break; case 4: // NUMBER value.copy< int > (that.value); break; default: break; } } they are actually useless: we never need it. * data/lalr1.cc: Don't generate the stack_symbol_type copy ctor. 2018-08-14 Akim Demaille C++: symbol constructors: add a missing reference Fix a typo so that instead of basic_symbol::basic_symbol (typename Base::kind_type t, const int v) we now generate basic_symbol::basic_symbol (typename Base::kind_type t, const int& v) * data/variant.hh (b4_basic_symbol_constructor_declare) (b4_basic_symbol_constructor_define): Add missing reference. 2018-08-14 Akim Demaille C++: remove useless calls to the base default constructor * data/c++.m4, data/stack.hh, data/variant.hh: here. 2018-08-14 Akim Demaille C++: prefer size_type to unsigned for indexes * data/stack.hh (size_type): New, based on the container type. 2018-08-14 Akim Demaille regen 2018-08-14 Akim Demaille style: m4: remove useless reference to 'int' in integral types * m4/cxx.m4: Prefer 'unsigned' to 'unsigned int'. 2018-08-14 Akim Demaille style: doc: remove useless reference to 'int' in integral types * doc/bison.texi: Prefer 'unsigned' to 'unsigned int'. Likewise for long and short. 2018-08-14 Akim Demaille style: lib: remove useless reference to 'int' in integral types * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h, * lib/bitset_stats.c, lib/bitsetv-print.c, lib/bitsetv.c, * lib/bitsetv.h, lib/ebitset.c, lib/lbitset.c, lib/timevar.c, * lib/vbitset.c: Prefer 'unsigned' to 'unsigned int'. Likewise for long and short. 2018-08-14 Akim Demaille style: src: remove useless reference to 'int' in integral types * src/AnnotationList.c, src/AnnotationList.h, src/InadequacyList.h, * src/closure.c, src/closure.h, src/gram.c, src/gram.h, src/ielr.c, * src/location.c, src/output.c, src/reader.c, src/relation.c, * src/scan-code.l, src/scan-gram.l, src/tables.c, src/tables.h: Prefer 'unsigned' to 'unsigned int'. Likewise for long and short. 2018-08-14 Akim Demaille style: tests: remove useless reference to 'int' in integral types * tests/actions.at, tests/cxx-type.at: Prefer 'unsigned' to 'unsigned int'. Likewise for long and short. 2018-08-14 Akim Demaille style: data: remove useless reference to 'int' in integral types * data/c.m4, data/glr.c, data/yacc.c: Prefer 'unsigned' to 'unsigned int'. Likewise for long and short. 2018-08-12 Akim Demaille gnulib: update * bootstrap.conf: gnulib_mk is defined again by bootstrap. 2018-08-12 Akim Demaille doc: avoid type aliases * doc/bison.texi (C++ Location Values): Use 'unsigned' instead of 'uint'. 2018-08-12 Akim Demaille doc: remove the "experimental" warning for some features Several features were flagged 'experimental' and waiting for user feedback to 'stabilize', but i. AFAIK, no user ever reported anything about them, ii. they'be been here long enough to prove they don't do harm. * doc/bison.texi: No longer experimental: default %printer and %destructor (typed: <*> and untyped: <>), %define api.value.type union and variant, Java parsers, XML output, LR family (lr, ielr, lalr), semantic predicates (%?). 2018-08-12 Akim Demaille tests: check variants and typed mid-rule actions See http://lists.gnu.org/archive/html/bison-patches/2018-08/msg00013.html * tests/c++.at (Variants and Typed Mid-rule Actions): New. 2018-08-12 Akim Demaille tests: fix minor issues * tests/actions.at: Fix some log messages. Prefer #error to fprintf: it fixes the invalid use of yyoutput in %destructor, and it is an even stronger check: that the code is not even emitted. The portability of #error is not really a problem here, since the point is anyway to have the compilation fail. 2018-08-11 Akim Demaille c++: variant: add more assertions * data/variant.hh (variant::as): Check yytypeid_ before checking *yytypeid_. 2018-08-11 Akim Demaille doc: -fcaret is enabled by default * doc/bison.texi (Mid-Rule Action Translation): So no need to pass it. 2018-08-11 Akim Demaille style: reduce scopes * src/closure.c, src/conflicts.c: here. 2018-08-11 Akim Demaille NEWS: update 2018-08-11 Akim Demaille rule actions cannot be typed Make sure that we cannot apply a type to the (main) action of a rule. * src/reader.c (grammar_rule_check): Issue the warning. * tests/input.at (Cannot type action): Check the warning. 2018-08-11 Akim Demaille warn about typed mid-rule actions in Yacc mode * src/reader.c (grammar_current_rule_action_append): Warn. * tests/input.at (AT_CHECK_UNUSED_VALUES): Check. 2018-08-11 Akim Demaille tests: check typed mid-rule actions * tests/input.at (_AT_UNUSED_VALUES_DECLARATIONS): Check typed mid-rule actions. * tests/report.at (Reports): Check that types of typed mid-rule actions are reported. * tests/actions.at (Typed mid-rule actions): Check that the values of typed mid-rule actions are correct. 2018-08-11 Akim Demaille regen 2018-08-11 Akim Demaille add support for typed mid-rule actions Prompted on Piotr Marcińczyk's message: http://lists.gnu.org/archive/html/bug-bison/2017-06/msg00000.html. See also http://lists.gnu.org/archive/html/bug-bison/2018-06/msg00001.html. Because their type is unknown to Bison, the values of midrule actions are not treated like the others: they don't have %printer and %destructor support. In addition, in C++, (Bison) variants cannot work properly. Typed midrule actions address these issues. Instead of: exp: { $$ = 1; } { $$ = 2; } { $$ = $1 + $2; } write: exp: { $$ = 1; } { $$ = 2; } { $$ = $1 + $2; } * src/scan-code.h, src/scan-code.l (code_props): Add a `type` field to record the declared type of an action. (code_props_rule_action_init): Add a type argument. * src/parse-gram.y: Accept an optional type tag for actions. * src/reader.h, src/reader.c (grammar_current_rule_action_append): Add a type argument. (grammar_midrule_action): When a mid-rule is typed, pass its type to the defined dummy non terminal symbol. 2018-08-05 Akim Demaille tests: make room for more cases * tests/input.at (AT_CHECK_UNUSED_VALUES): Add an empty line to allow more symbols, and adjust line numbers. Use a more consistent m4 quoting scheme. 2018-08-05 Akim Demaille warnings: address -Wnull-dereference in reader.c Based on a patch by David Michael. http://lists.gnu.org/archive/html/bison-patches/2018-07/msg00000.html * src/reader.c (find_start): New, extracted from... (check_and_convert_grammar): here. 2018-08-05 Akim Demaille style: ielr: reduce scopes * src/ielr.c: Use modern C to reduce the scopes of some variables. 2018-07-26 Akim Demaille style: move to C99 to reduce scopes * src/symtab.c, src/reader.c: Freely mix statements and variable definitions. And use for-loops with initializers. 2018-07-26 Akim Demaille style: split a function in two grammar_current_rule_action_append was used in two different places: for actual action (`{...}`), and for predicates (`%?{...}`). Let's split this in two different functions. * src/reader.h, src/reader.c (grammar_current_rule_predicate_append): New. Extracted from... (grammar_current_rule_action_append): here. Remove arguments that don't apply. Adjust dependencies. 2018-07-26 Akim Demaille tests: fix typo * tests/actions.at: Remove (harmless) stray character. 2018-07-26 Akim Demaille print: remove unused function This function was unused since 1991's original import by rms (e06f0c34427faedc7afbec9554adbffc4c87312e). * src/print.c (print_token): Remove. 2018-06-23 Akim Demaille doc: fix Texinfo syntax error * doc/bison.texi (Understanding): here. 2018-06-22 Akim Demaille doc: we now show the type of the symbols * doc/bison.texi (Understanding Your Parser): Update the output from Bison. Use types in the example, and show them in the report. * NEWS: Update. 2018-06-18 Akim Demaille tests: check the typed symbols in the reports * tests/report.at: New. * tests/local.mk, tests/testsuite.at: Use it. 2018-06-18 Akim Demaille report: display the type of the symbols * src/print.c (print_nonterminal_symbols, print_terminal_symbols): Also should the type of the symbols. 2018-06-18 Akim Demaille style: reduce scopes * src/print.c (print_terminal_symbols, print_nonterminal_symbols): Here. 2018-06-18 Akim Demaille style: split large function * src/print.c (print_grammar): Split into... (print_terminal_symbols, print_nonterminal_symbols): these. Adjust dependencies. 2018-06-18 Akim Demaille style: reduce scopes * src/print.c (print_grammar): Shorten scopes. 2018-06-18 Akim Demaille gnulib: update Fixes the `make install-pdf` problem reported by Hans Åberg in http://lists.gnu.org/archive/html/bug-bison/2018-06/msg00000.html that had already been fixed by Joel E. Denny in http://lists.gnu.org/archive/html/bug-bison/2012-04/msg00011.html Final fix in http://lists.gnu.org/archive/html/bug-gnulib/2018-06/msg00019.html 2018-06-17 Akim Demaille Merge maint into master * upstream/maint: (48 commits) THANKS: update an address tests: adjust syncline tests to GCC 7 glr: fix improperly placed synclines bison: be git grep friendly Replace ftp with https maint: post-release administrivia version 3.0.5 bison: style: indentation fixes regen bison: please address sanitizer C++: style: fix indentation NEWS: update C++: style: prefer `unsigned` to `unsigned int` C++: style: space before paren C++: fix -Wdeprecated warnings tests: fix -Wdeprecated warning maint: update syntax-check exclusions autoconf: update regen Update copyright years ... 2018-05-30 Akim Demaille THANKS: update an address 2018-05-30 Akim Demaille tests: adjust syncline tests to GCC 7 GCC 7 also underlines the error. syncline.c:4:2: error: #error "4" #error "4" ^~~~~ * tests/synclines.at (_AT_SYNCLINES_COMPILE): Remove tildas from GCC 7. 2018-05-29 Akim Demaille glr: fix improperly placed synclines Predicates with GLR are issued with synclines in the middle of C code: case 2: if (! (#line 6 "sempred.y" /* glr.c:816 */ new_syntax)) YYERROR; #line 793 "sempred.tab.c" /* glr.c:816 */ break; Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2018-05/msg00033.html * data/c.m4 (b4_predicate_case): Be sure to start on column 0. It would be nicer if b4_syncline could ensure this by itself (that would avoid ugly code when synclines are disabled), but that's way more work. * tests/glr-regression.at (Predicates): Be a real end-to-end test. This would have caught this error years ago... 2018-05-29 Akim Demaille bison: be git grep friendly * src/output.c (user_actions_output): Make calls to b4_case and b4_predicate_case explicit. 2018-05-29 Akim Demaille Replace ftp with https Reported by Hans Åberg. * README, cfg.mk, doc/bison.texi: here. 2018-05-27 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2018-05-27 Akim Demaille version 3.0.5 * NEWS: Record release date. 2018-05-27 Akim Demaille bison: style: indentation fixes * src/parse-gram.y: here. 2018-05-27 Akim Demaille regen 2018-05-27 Akim Demaille bison: please address sanitizer * src/parse-gram.y (add_param): Asan does not like that the second argument of strspn is not 0-terminated. 2018-05-27 Akim Demaille C++: style: fix indentation * data/variant.hh (b4_symbol_variant): De-indent, as the callers are indented. 2018-05-27 Akim Demaille NEWS: update 2018-05-27 Akim Demaille C++: style: prefer `unsigned` to `unsigned int` * data/c++.m4: here. 2018-05-27 Akim Demaille C++: style: space before paren * data/c++.m4, data/lalr1.cc: here. 2018-05-27 Akim Demaille C++: fix -Wdeprecated warnings For instance on test 99: In file included from @@.cc:56: @@.hh:409:26: error: definition of implicit copy constructor for 'stack_symbol_type' is deprecated because it has a user-declared copy assignment operator [-Werror,-Wdeprecated] stack_symbol_type& operator= (const stack_symbol_type& that); ^ Reported by Derek Clegg. https://lists.gnu.org/archive/html/bison-patches/2018-05/msg00036.html * configure.ac (warn_tests): Add -Wdeprecated. * data/lalr1.cc (stack_symbol_type): Add an explicit copy ctor. We cannot rely on the explicit default implementation (`= default`) as we support C++ 98. 2018-05-27 Akim Demaille tests: fix -Wdeprecated warning With recent compilers: input.yy:49:5: error: definition of implicit copy assignment operator for 'Object' is deprecated because it has a user-declared destructor [-Werror,-Wdeprecated] ~Object () ^ input.yy:130:35: note: in implicit copy assignment operator for 'Object' first required here { yylhs.value.as< Object > () = yystack_[0].value.as< Object > (); } * tests/c++.at (Object): Add missing assignment operator. 2018-05-19 Akim Demaille maint: update syntax-check exclusions sc_two_space_separator_in_usage complains about bootstrap: two_space_separator_in_usage /Users/akim/src/gnu/bison/bootstrap:905: --aux-dir $build_aux\ /Users/akim/src/gnu/bison/bootstrap:906: --doc-base $doc_base\ /Users/akim/src/gnu/bison/bootstrap:907: --lib $gnulib_name\ /Users/akim/src/gnu/bison/bootstrap:908: --m4-base $m4_base/\ /Users/akim/src/gnu/bison/bootstrap:909: --source-base $source_base/\ /Users/akim/src/gnu/bison/bootstrap:910: --tests-base $tests_base\ /Users/akim/src/gnu/bison/bootstrap:911: --local-dir $local_gl_dir\ maint.mk: help2man requires at least two spaces between an option and its description * cfg.mk: Exclude bootstrap from this check. 2018-05-19 Akim Demaille autoconf: update * submodules/autoconf: Update to latest master. No difference on the M4 files we use. 2018-05-19 Akim Demaille regen 2018-05-12 Akim Demaille Update copyright years Run `make update-copyright`. 2018-05-12 Nate Guerin Add a missing word in the documentation Small patch adds the word 'to' to the documentation. 2018-05-12 Akim Demaille Examples: improve C++ style * examples/variant.yy: Prefer vector to list. Remove useless inline. 2018-05-12 Akim Demaille Avoid compiler warnings At least GCC 7.3, with -O1 or -O2 (but not -O0 or -O3) generates warnings with -Wnull-dereference when using yyformat: it fails to see yyformat cannot be null. Reported by Frank Heckenbach, https://savannah.gnu.org/patch/?9620. * configure.ac: Use -Wnull-dereference if supported. * data/glr.c, data/lalr1.cc, data/yacc.c: Define yyformat in such a way that GCC cannot not see that yyformat is defined. Using `default: abort();` also addresses the issue, but forces the inclusion of `stdlib.h`, which we avoid. 2018-05-10 Akim Demaille C++: fix uses of `inline` Sometimes `inline` would be used in *.cc files on symbols that are not exported (useless but harmless), and sometimes on exported symbols such as the constructor of syntax_error (harmful: linking fails). Reported several times, including: - by Dennis T http://lists.gnu.org/archive/html/bug-bison/2016-03/msg00002.html - by Frank Heckenbach https://savannah.gnu.org/patch/?9616 * data/c++.m4 (b4_inline): New: expands to `inline` or nothing. Use it where appropriate. * data/lalr1.cc: Use it where appropriate. * tests/c++.at (Syntax error as exception): Put the scanner in another compilation unit to exercise the constructor of syntax_error. 2018-05-10 Akim Demaille C++: remove useless `inline` in CC files * data/glr.cc, data/lalr1.cc: Remove `inline` from implementations that are not in headers. 2018-05-10 Akim Demaille C++: remove useless `inline` on templates Templates are implicitly `inline`. * data/c++.m4, data/lalr1.cc: Remove `inline` from templates. 2018-05-08 Akim Demaille style: don't use std::endl * data/lalr1.cc, doc/bison.texi, etc/bench.pl.in, examples/variant.yy, * tests/actions.at, tests/atlocal.in, tests/c++.at, tests/headers.at, * tests/local.at, tests/types.at: Don't use std::endl, it flushes uselessly, and is considered bad style. 2018-05-08 Akim Demaille doc: wrap * README-hacking: Refill paragraphs. 2018-05-08 Akim Demaille gnulib: update * README-hacking: Commit before bootstrapping. * bootstrap.conf: gnulib_mk is no longer defined by bootstrap. * bootstrap, gnulib, lib/.gitignore, m4/.gitignore: Update/regen. 2018-05-08 Akim Demaille tests: we might need to find gnulib headers 315. calc.at:596: testing Calculator ... ++ cat ++ test x = x1 ++ set +x bison/tests/calc.at:596: bison -fno-caret -o calc.c calc.y ++ bison -fno-caret -o calc.c calc.y ++ set +x bison/tests/calc.at:596: $BISON_C_WORKS stderr: stdout: ++ set +x bison/tests/calc.at:596: $CC $CFLAGS $CPPFLAGS $LDFLAGS -o calc calc.c $LIBS ++ ccache clang-mp-6.0 -Qunused-arguments -O3 -g -Wall -Wextra -Wno-sign-compare -Wcast-align -Wdocumentation -Wformat -Wpointer-arith -Wwrite-strings -Wbad-function-cast -Wshadow -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -Wmissing-declarations -Wmissing-prototypes -Wundef -pedantic -Wsign-compare -fno-color-diagnostics -Wno-keyword-macro -Werror -Ibison/_build/6s/lib -DNDEBUG -isystem /opt/local/include -I/opt/local/include -L/opt/local/lib -o calc calc.c bison/_build/6s/lib/libbison.a -lintl -Wl,-framework -Wl,CoreFoundation stderr: In file included from calc.y:198: bison/_build/6s/lib/unistd.h:592:11: fatal error: 'getopt-pfx-core.h' file not found # include ^~~~~~~~~~~~~~~~~~~ 1 error generated. stdout: bison/tests/calc.at:596: exit code was 1, expected 0 315. calc.at:596: 315. Calculator (calc.at:596): FAILED (calc.at:596) * tests/atlocal.in (CPPFLAGS): Find gnulib's headers. 2018-05-08 Akim Demaille getargs: rename argument to avoid gnulib's renaming With Clang 6.0: CC src/bison-getargs.o bison/src/getargs.c:67:12: error: parameter 'option' not found in the function declaration [-Werror,-Wdocumentation] * \param option option being decoded. ^~~~~~ bison/src/getargs.c:67:12: note: did you mean 'rpl_option'? * src/getargs.c: Don't use `option` as a documentation argument. 2017-09-22 Paul Eggert Capitalize "Polish" when it's a proper adjective 2017-09-17 Paul Eggert Adjust to recent Gnulib changes 2017-09-17 Paul Eggert autoconf: update 2017-09-17 Paul Eggert gnulib: update 2015-08-12 Akim Demaille gnulib: update 2015-08-12 Akim Demaille lalr1, yacc: use the default location as initial error location Currently lalr1.cc makes an out-of-bound access when trying to read @1 in rules with an empty rhs (i.e., when there is no @1) that raises an error (YYERROR). glr.c already gracefully handles this by using @$ as initial location for the errors. Let's do that in yacc.c and lalr1.cc. * data/lalr1.cc, data/yacc.c: Use @$ to initialize the error location. * tests/actions.at: Check that case. 2015-08-12 Akim Demaille style: formatting and comment changes * data/glr.c: Avoid empty lines. * data/lalr1.cc: Use the same comments as in glr.c and yacc.c. 2015-08-12 Akim Demaille c++: style: use "unsigned", not "unsigned int" This style appears to be more traditional, at least in C++. For instance in the standard, [facets.examples]. There are occurrences using "unsigned int" too though. * data/lalr1.cc, data/location.cc, data/stack.hh: here. 2015-08-12 Akim Demaille c++: style: remove useless "inline" and fix space issues * data/lalr1.cc, data/c++.m4: Formatting changes. * data/stack.hh: Remove useless "inline". Add documentation. * data/location.cc: Prefer {} for empty bodies. 2015-08-12 Akim Demaille tests: beware of additional warnings from GCC 5 * tests/synclines.at (AT_SYNCLINES_COMPILE): Avoid warnings about unused functions. 2015-08-12 Akim Demaille tests: beware that clang warns about "#define private public" We use this trick to write some test about internal details. But since we use -Werror, clang++ 3.6 dies issueing a warning about it. * configure.ac (warn_tests): Disable this warning. 2015-08-12 Akim Demaille tests: update our Valgrind suppression files * build-aux/linux-gnu.valgrind, build-aux/darwin11.4.0.valgrind: Rename as... * build-aux/Linux.valgrind, build-aux/Darwin.valgrind: these. * build-aux/Linux.valgrind: Add suppression clause. * configure.ac: Update. * tests/local.mk: Use it. 2015-03-03 Akim Demaille doc: improve html and pdf rendering * doc/bison.texi: Help html conversion to understand where the function names end. Beware of PDF width. 2015-03-03 Akim Demaille doc: fixes in the C++ part Reported by Askar Safin. http://lists.gnu.org/archive/html/bug-bison/2015-02/msg00018.html http://lists.gnu.org/archive/html/bug-bison/2015-02/msg00019.html * doc/bison.texi (Split Symbols): Fix access to token types. yylval is a pointer, so use ->. Fix coding style issues: space before paren. 2015-02-10 Akim Demaille tests: be robust to platforms that support UTF-8 even with LC_ALL=C Because musl supports UTF-8 with LC_ALL=C, gcc produces: input.y: In function ‘yyparse’: instead of: input.y: In function 'yyparse': Reported by Ferdinand Thiessen. http://lists.gnu.org/archive/html/bug-bison/2015-02/msg00001.html * tests/synclines.at (AT_SYNCLINES_COMPILE): Skip syncline tests when we can't trust error messages issued about a function body. 2015-02-10 Akim Demaille tests: java: avoid recent Java features Tests 463 and 464 fail with Java 1.4 compilers. Reported by Michael Felt. * tests/javapush.at: Use StringBuffer instead of StringBuilder. 2015-01-26 Akim Demaille tests: c++: fix symbol lookup issue Sun C 5.13 SunOS_sparc 2014/10/20 reports errors on tests 430-432. Reported by Dennis Clarke. * tests/c++.at (Variants): Be sure to emit operator<< before using it: use "%code top" rather than "%code". Prefer std::vector to std::list. Do not define anything in std::, to avoid undefined behavior. 2015-01-23 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: post-release administrivia version 3.0.4 gnulib: update build: re-enable compiler warnings, and fix them tests: c++: fix a C++03 conformance issue tests: fix a title c++: reserve 200 slots in the parser's stack tests: be more robust to unrecognized synclines, and try to recognize xlc tests: fix C++ conformance build: fix some warnings build: avoid infinite recursions on include_next 2015-01-23 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2015-01-23 Akim Demaille version 3.0.4 * NEWS: Record release date. 2015-01-23 Akim Demaille gnulib: update 2015-01-23 Akim Demaille build: re-enable compiler warnings, and fix them There are warnings (-Wextra) in generated C++ code: ltlparse.cc: In member function 'ltlyy::parser::symbol_number_type ltlyy::parser::by_state::type_get() const': ltlparse.cc:452:33: warning: enumeral and non-enumeral type in conditional expression return state == empty_state ? empty_symbol : yystos_[state]; Reported by Alexandre Duret-Lutz. It turns out that -Wall and -Wextra were disabled because of a stupid typo. * configure.ac: Fix the stupid typo. * data/lalr1.cc, src/AnnotationList.c, src/InadequacyList.c, * src/ielr.c, src/print.c, src/scan-code.l, src/symlist.c, * src/symlist.h, src/symtab.c, src/tables.c, tests/actions.at, * tests/calc.at, tests/cxx-type.at, tests/glr-regression.at, * tests/named-refs.at, tests/torture.at: Fix warnings, mostly issues about variables used only with assertions, which are disabled with -DNDEBUG. 2015-01-22 Akim Demaille tests: c++: fix a C++03 conformance issue This fixes test 241 on xLC: "input.y", line 42.11: 1540-0274 (S) The name lookup for "report" did not find a declaration. "input.y", line 42.11: 1540-1292 (I) Static declarations are not considered for a function call if the function is not qualified. where report is: static void report (std::ostream& yyo, int ival, float fval) { yyo << "ival: " << ival << ", fval: " << fval; } and line 42 is: %printer { report (yyo, $$, $$); } ; It turns out that indeed this function must not be declared static, . Let's put it into an anonymous namespace. Reported by Thomas Jahns. http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00059.html * tests/actions.at (Qualified $$ in actions): Don't use "static", prefer anonymous namespace. 2015-01-20 Akim Demaille tests: fix a title * tests/conflicts.at: De-overquote. 2015-01-20 Akim Demaille c++: reserve 200 slots in the parser's stack This is consistent with what is done with yacc.c and glr.c. Because it also avoids that the stack needs to be resized very soon, it should help keeping tests about destructors more reliable. Indeed, if the stack is created too small, very soon the C++ library needs to enlarge it, which means creating a new one, copying the elements from the initial one onto it, and then destroy the elements of the initial stack: that would be a spurious call to a destructor. Reported by Thomas Jahns. http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00059.html * data/stack.hh (stack::stack): Reserve 200 slots. * tests/c++.at: Remove traces of stack expansions. 2015-01-20 Akim Demaille tests: be more robust to unrecognized synclines, and try to recognize xlc Reported by Thomas Jahns. http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00059.html * tests/synclines.at (AT_SYNCLINES_COMPILE): Rename as... (_AT_SYNCLINES_COMPILE): this. Try to recognize xlc locations. (AT_SYNCLINES_COMPILE): New. Skips the test if we can't read the synclines. 2015-01-20 Akim Demaille tests: fix C++ conformance Reported by Thomas Jahns. http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00059.html * tests/c++.at (Exception safety): Add missing include. Don't use const_iterator for erase. 2015-01-18 Akim Demaille build: fix some warnings Reported by John Horigan. http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00034.html * src/graphviz.c, src/symtab.h: Address compiler warnings. 2015-01-16 Akim Demaille Merge remote-tracking branch 'origin/maint' into origin/master * origin/maint: doc: minor fixes gnulib: strtoul is considered obsolete and now useless c++: avoid warnings when destructors don't use $$ maint: post-release administrivia version 3.0.3 gnulib: update 2015-01-16 Akim Demaille build: avoid infinite recursions on include_next On MacOS X 10.5 PPC with Apple's GCC 4.0.1: % uname -a Darwin aria.cielonegro.org 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:0 1 PDT 2009; root:xnu-1228.15.4~1/RELEASE_PPC Power Macintosh % gcc --version powerpc-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493) Copyright (C) 2005 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. building in place enters into an infinite recursion on "#include_next": % gmake V=1 [snip] depbase=`echo lib/math.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\ gcc -std=gnu99 -I. -Ilib -I. -I./lib -g -O2 -MT lib/math.o -MD -MP -MF $depbase.Tpo -c -o lib/math.o lib/math.c &&\ mv -f $depbase.Tpo $depbase.Po In file included from lib/math.h:27, from lib/math.h:27, from lib/math.h:27, from lib/math.h:27, [snip] from lib/math.h:27, from lib/math.h:27, from lib/math.c:3: lib/math.h:27:23: error: #include nested too deeply Makefile:3414: recipe for target 'lib/math.o' failed gmake[2]: *** [lib/math.o] Error 1 Using -I./lib instead of -Ilib fixes the problem. Reported by Pho. * Makefile.am (AM_CPPFLAGS): Use -I./lib instead of -Ilib. 2015-01-16 Akim Demaille doc: minor fixes * doc/bison.texi: Fix warnings about colon in reference names. * data/bison.m4, src/files.h: Fix comments. * doc/Doxyfile.in: update. 2015-01-15 Akim Demaille gnulib: strtoul is considered obsolete and now useless * bootstrap.conf: here. 2015-01-15 Akim Demaille c++: avoid warnings when destructors don't use $$ * data/c++.m4: here. 2015-01-15 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2015-01-15 Akim Demaille version 3.0.3 * NEWS: Record release date. 2015-01-15 Akim Demaille gnulib: update 2015-01-14 Akim Demaille symbol: use the first occurrence as an LHS as defining location Currently on the following grammar: %type foo %% start: foo | bar | "baz" foo: foo bar: bar bison reports: warning: 2 nonterminals useless in grammar [-Wother] warning: 4 rules useless in grammar [-Wother] 1.13-15: warning: nonterminal useless in grammar: foo [-Wother] %type foo ^^^ 3.14-16: warning: nonterminal useless in grammar: bar [-Wother] start: foo | bar | "baz" ^^^ [...] i.e., the location of the first occurrence of a symbol is taken as its definition point. In the case of nonterminals, the first occurrence as a left-hand side of a rule makes more sense: warning: 2 nonterminals useless in grammar [-Wother] warning: 4 rules useless in grammar [-Wother] 4.1-3: warning: nonterminal useless in grammar: foo [-Wother] foo: foo ^^^ 5.1-3: warning: nonterminal useless in grammar: bar [-Wother] bar: bar ^^^ [...] * src/symtab.h, src/symtab.c (symbol::location_of_lhs): New. (symbol_location_as_lhs_set): New. * src/parse-gram.y (current_lhs): Use it. * tests/reduce.at: Update locations. 2015-01-14 Akim Demaille reduce: don't complain about rules whose lhs is useless In the following grammar, the 'exp' nonterminal is trivially useless. So, of course, its rules are useless too. %% input: '0' | exp exp: exp '+' exp | exp '-' exp | '(' exp ')' Previously all the useless rules were reported, including those whose left-hand side is the 'exp' nonterminal: warning: 1 nonterminal useless in grammar [-Wother] warning: 4 rules useless in grammar [-Wother] 2.14-16: warning: nonterminal useless in grammar: exp [-Wother] input: '0' | exp ^^^ 2.14-16: warning: rule useless in grammar [-Wother] input: '0' | exp ^^^ ! 3.6-16: warning: rule useless in grammar [-Wother] ! exp: exp '+' exp | exp '-' exp | '(' exp ')' ! ^^^^^^^^^^^ ! 3.20-30: warning: rule useless in grammar [-Wother] ! exp: exp '+' exp | exp '-' exp | '(' exp ')' ! ^^^^^^^^^^^ ! 3.34-44: warning: rule useless in grammar [-Wother] ! exp: exp '+' exp | exp '-' exp | '(' exp ')' ! ^^^^^^^^^^^ The interest of being so verbose is dubious. I suspect most of the time nonterminals are not expected to be useless, so the user wants to fix the nonterminal, not remove its rules. And even if the user wanted to get rid of its rules, the position of these rules probably does not help more that just having the name of the nonterminal. This commit discard these messages, marked with '!', and keep the others. In particular, we still report: 2.14-16: warning: rule useless in grammar [-Wother] input: '0' | exp ^^^ All the useless rules (including the '!' ones) are still reported in the reports (xml, text, etc.); only the diagnostics on stderr change. * src/gram.c (grammar_rules_useless_report): Don't complain about useless rules whose lhs is useless. * src/reduce.h, src/reduce.c (reduce_nonterminal_useless_in_grammar): Take a sym_content as argument. Adjust callers. * tests/reduce.at (Useless Rules, Underivable Rules, Reduced Automaton): Adjust. 2015-01-14 Akim Demaille style: reduce: use unsigned to count a number of objects * src/reduce.h, src/reduce.c (nuseful_productions, nuseless_productions) (nuseful_nonterminals, nuseless_nonterminals): Declare as unsigned. Simplify "0 <" tests into non-zero tests. 2015-01-14 Akim Demaille style: reduce: introduce and use a swap for bitset * src/reduce.c (bitset_swap): New. Use it. 2015-01-14 Akim Demaille style: reduce: reduce scopes and other stylistic changes * src/reduce.c: Various stylistic changes: Reduce scopes. Prefer ++i to i++. Prefer < to >. 2015-01-13 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: split a large test case into several smaller ones package: a bit of trouble shooting indications doc: liby's main arms the internationalization bison: avoid warnings from static code analysis c++: fix the use of destructors when variants are enabled style: tests: simplify the handling of some C++ tests c++: symbols can be empty, so use it c++: variants: don't leak the lookahead in error recovery c++: provide a means to clear symbols c++: clean up the handling of empty symbols c++: comment and style changes c++: variants: comparing addresses of typeid.name() is undefined c++: locations: complete the API and fix comments build: do not clean figure sources in make clean 2015-01-13 Akim Demaille tests: split a large test case into several smaller ones * tests/conflicts.at (AT_CONSISTENT_ERRORS_CHECK): Move AT_SETUP/AT_CLEANUP into it, so that we don't skip non Java tests following a test case in Java. 2015-01-12 Akim Demaille package: a bit of trouble shooting indications * README-hacking: here. 2015-01-12 Akim Demaille doc: liby's main arms the internationalization Reported by Nicolas Bedon. * doc/bison.texi (Yacc Library): Document the call the setlocale. 2015-01-09 Akim Demaille bison: avoid warnings from static code analysis A static analysis tool reports that some callers of symbol_list_n_get might get NULL and not handle it properly. This is not the case, yet we can suppress this pattern. Reported by Mike Sullivan. * src/symlist.c (symbol_list_n_get): Actually it is never called to return 0. Enforce this postcondition via aver. (symbol_list_n_type_name_get): Simplify accordingly. In particular, discards a (translated) useless error message. * src/symlist.h: Adjust documentation. * src/scan-code.l: Style change. 2015-01-09 Akim Demaille c++: fix the use of destructors when variants are enabled When using variants, destructors generate invalid code. Reported by Michael Catanzaro. * data/c++.m4 (~basic_symbol): b4_symbol_foreach works on yysym: define it. * tests/c++.at (Variants): Check it. 2015-01-08 Akim Demaille style: tests: simplify the handling of some C++ tests * tests/c++.at: here. (Doxygen): Pass %define, so that files such as position.hh etc. are generated, instead of putting everything into input.hh. 2015-01-08 Akim Demaille c++: symbols can be empty, so use it The previous patches ensure that symbols (symbol_type and stack_symbol_type) can be empty, cleared, and their emptiness can be checked. Therefore, yyempty, which codes whether yyla is empty or not, is now useless. In C skeletons (e.g., yacc.c), the fact that the lookahead is empty is coded by "yychar = YYEMPTY", which is exactly what this patch restores, since yychar/yytoken corresponds to yyla.type. * data/lalr1.cc (yyempty): Remove. Rather, depend on yyla.empty (). 2015-01-08 Akim Demaille c++: variants: don't leak the lookahead in error recovery During error recovery, when discarding the lookeahead, we don't destroy it, which is caught by parse.assert assertions. Reported by Antonio Silva Correia. With an analysis and suggested patch from Michel d'Hooge. * tests/c++.at (Variants): Strengthen the test to try syntax errors with discarded lookahead. 2015-01-08 Akim Demaille c++: provide a means to clear symbols The symbol destructor is currently the only means to clear a symbol. Unfortunately during error recovery we might have to clear the lookahead, which is a local variable (yyla) that has not yet reached its end of scope. Rather that duplicating the code to destroy a symbol, or rather than destroying and recreating yyla, let's provide a means to clear a symbol. Reported by Antonio Silva Correia, with an analysis from Michel d'Hooge. * data/c++.m4, data/lalr1.cc (basis_symbol::clear, by_state::clear) (by_type::clear): New. (basic_symbol::~basic_symbol): Use clear. 2015-01-08 Akim Demaille c++: clean up the handling of empty symbols * data/c++.m4, data/lalr1.cc (yyempty_): Remove, replaced by... (empty_symbol, by_state::empty_state): these. (basic_symbol::empty): New. 2015-01-08 Akim Demaille c++: comment and style changes * data/c++.m4, data/lalr1.cc: More documentation. Tidy. * tests/c++.at (string_cast): Rename as... (to_string): this C++11 name. 2015-01-07 Akim Demaille c++: variants: comparing addresses of typeid.name() is undefined Instead of storing and comparing pointers to names of types, store pointers to the typeids, and compares the typeids. Reported by Thomas Jahns. * data/variant.hh (yytname_): Replace with... (yytypeid_): this. 2015-01-05 Akim Demaille c++: locations: complete the API and fix comments There are no support for += between locations, and some comments are wrong. Reported by Alexandre Duret-Lutz. * data/location.cc: Fix. * doc/bison.texi: Document. * tests/c++.at: Check. 2015-01-05 Akim Demaille build: do not clean figure sources in make clean "make clean && make" fails in in-tree builds. * doc/local.mk (CLEANDIRS): Replace with... (CLEANFILES): this safer list of files to clean. 2015-01-05 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: build: don't try to generate docs when cross-compiling package: fix a reporter's name %union: fix the support for named %union package: bump to 2015 flex: don't trust YY_USER_INIT yacc.c: fix broken union when api.value.type=union and %defines are used doc: fix missing xref gnulib: update location: remove some ugly debugging code traces build: use abort to pacify compiler errors package: bump to 2014 doc: specify documentation encoding 2015-01-05 Akim Demaille build: don't try to generate docs when cross-compiling When cross-compiling don't run the generated bison to update the docs. Reported by Aaro Koskinen. * configure.ac (CROSS_COMPILING): New. * doc/local.mk: Use it. 2015-01-04 Akim Demaille package: fix a reporter's name * THANKS, build-aux/git-log-fix: s/Bernd Edligner/Bernd Edlinger/. 2015-01-04 Akim Demaille %union: fix the support for named %union Bison supports a union tag, for obscure reasons. But it does a poor job at it, especially since Bison 3.0. Reported by Stephen Cameron and Tobias Frost. It did not ensure that the name was not given several times. An easy way to do this is to make the %union tag be handled as a %define variable, as they cannot be defined several times. Since Bison 3.0, the synclines were wrongly placed, resulting in invalid code. Addressing this issue, because of the way the union tag was stored (as a code muscle), would have been tedious. Unless we rather define the %union tag as a %percent variable, whose synclines are easier to manipulate. So replace the b4_union_name muscle by the api.value.union.name %define variable, document, and check. * data/bison.m4: Make sure that api.value.union.name has a keyword value. * data/c++.m4: Make sure that api.value.union.name is not defined. * data/c.m4 (b4_union_name): No longer use it, use api.value.union.name. * doc/bison.texi (%define Summary): Document it. * src/parse-gram.y (union_name): No longer define b4_uion_name, but api.value.union.name. * tests/input.at (Redefined %union name): New. * tests/synclines.at (%union name syncline): New. * tests/types.at: Check named %unions. 2015-01-04 Akim Demaille package: bump to 2015 Which also requires: * gnulib: Update. 2014-12-31 Akim Demaille flex: don't trust YY_USER_INIT Reported by Bernd Edlinger and others. * src/scan-gram.l: here. 2014-12-31 Akim Demaille yacc.c: fix broken union when api.value.type=union and %defines are used Reported by Rich Wilson. * data/c.m4 (b4_symbol_type_register): Append to b4_union_members, not b4_user_union_members. The latter invokes the former, but it is the former which is reinitialized to empty by b4_value_type_setup_union. * tests/types.at: Check it. This reveals another bug, this time in the case of glr.c parsers. * data/glr.c: Generate the header file before the implementation file, to be sure that the setup is run before what depends on it. 2014-12-31 Akim Demaille doc: fix missing xref Reported by xolodho. * doc/bison.texi (Printer Decl): here. 2014-12-29 Akim Demaille gnulib: update 2014-02-03 Akim Demaille location: remove some ugly debugging code traces * data/location.cc: here. 2014-02-03 Akim Demaille build: use abort to pacify compiler errors clang, with -DNDEBUG and -Werror fails on some functions that might lack a return. This is because aver is just another assert, discarded with -DNDEBUG. So use abort. * src/muscle-tab.c, src/scan-skel.l: here. 2014-02-03 Akim Demaille package: bump to 2014 * AUTHORS, ChangeLog-2012, Makefile.am, NEWS, PACKAGING, README, * README-alpha, README-hacking, THANKS, TODO, bootstrap.conf, * build-aux/darwin11.4.0.valgrind, build-aux/local.mk, * build-aux/update-b4-copyright, * build-aux/update-package-copyright-year, cfg.mk, configure.ac, * data/README, data/bison.m4, data/c++-skel.m4, data/c++.m4, * data/c-like.m4, data/c-skel.m4, data/c.m4, data/glr.c, data/glr.cc, * data/java-skel.m4, data/java.m4, data/lalr1.cc, data/lalr1.java, * data/local.mk, data/location.cc, data/stack.hh, data/variant.hh, * data/xslt/bison.xsl, data/xslt/xml2dot.xsl, data/xslt/xml2text.xsl, * data/xslt/xml2xhtml.xsl, data/yacc.c, djgpp/Makefile.maint, * djgpp/README.in, djgpp/config.bat, djgpp/config.sed, * djgpp/config.site, djgpp/config_h.sed, djgpp/djunpack.bat, * djgpp/local.mk, djgpp/subpipe.c, djgpp/subpipe.h, * djgpp/testsuite.sed, doc/bison.texi, doc/local.mk, doc/refcard.tex, * etc/README, etc/bench.pl.in, etc/local.mk, * examples/calc++/calc++.test, examples/calc++/local.mk, * examples/extexi, examples/local.mk, examples/mfcalc/local.mk, * examples/mfcalc/mfcalc.test, examples/rpcalc/local.mk, * examples/rpcalc/rpcalc.test, examples/test, examples/variant.yy, * lib/abitset.c, lib/abitset.h, lib/bbitset.h, lib/bitset.c, * lib/bitset.h, lib/bitset_stats.c, lib/bitset_stats.h, * lib/bitsetv-print.c, lib/bitsetv-print.h, lib/bitsetv.c, * lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/get-errno.c, * lib/get-errno.h, lib/lbitset.c, lib/lbitset.h, lib/libiberty.h, * lib/local.mk, lib/main.c, lib/timevar.c, lib/timevar.def, * lib/timevar.h, lib/vbitset.c, lib/vbitset.h, lib/yyerror.c, * m4/bison-i18n.m4, m4/c-working.m4, m4/cxx.m4, m4/flex.m4, * m4/timevar.m4, src/AnnotationList.c, src/AnnotationList.h, * src/InadequacyList.c, src/InadequacyList.h, src/LR0.c, src/LR0.h, * src/Sbitset.c, src/Sbitset.h, src/assoc.c, src/assoc.h, * src/closure.c, src/closure.h, src/complain.c, src/complain.h, * src/conflicts.c, src/conflicts.h, src/derives.c, src/derives.h, * src/files.c, src/files.h, src/flex-scanner.h, src/getargs.c, * src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c, * src/graphviz.h, src/ielr.c, src/ielr.h, src/lalr.c, src/lalr.h, * src/local.mk, src/location.c, src/location.h, src/main.c, * src/muscle-tab.c, src/muscle-tab.h, src/named-ref.c, * src/named-ref.h, src/nullable.c, src/nullable.h, src/output.c, * src/output.h, src/parse-gram.c, src/parse-gram.y, src/print-xml.c, * src/print-xml.h, src/print.c, src/print.h, src/print_graph.c, * src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c, * src/reduce.h, src/relation.c, src/relation.h, src/scan-code.h, * src/scan-code.l, src/scan-gram.h, src/scan-gram.l, src/scan-skel.h, * src/scan-skel.l, src/state.c, src/state.h, src/symlist.c, * src/symlist.h, src/symtab.c, src/symtab.h, src/system.h, * src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h, * tests/actions.at, tests/atlocal.in, tests/bison.in, tests/c++.at, * tests/calc.at, tests/conflicts.at, tests/cxx-type.at, * tests/existing.at, tests/glr-regression.at, tests/headers.at, * tests/input.at, tests/java.at, tests/javapush.at, tests/local.at, * tests/local.mk, tests/named-refs.at, tests/output.at, tests/push.at, * tests/reduce.at, tests/regression.at, tests/sets.at, * tests/skeletons.at, tests/synclines.at, tests/testsuite.at, * tests/torture.at, tests/types.at: here. 2014-01-03 Paul Eggert doc: specify documentation encoding * doc/bison.texi: Add '@documentencoding UTF-8'; needed since the manual contains UTF-8 characters. This will cause the .info files to contain UTF-8 quotes and the like, which should be OK nowadays. Add @documentlanguage while we're at it. 2013-12-10 Akim Demaille symbols: properly fuse the properties of two symbol aliases This completes and fixes a7280757105b2909f6a58fdd1c582de8e278319a. Reported by Valentin Tolmer. Before it Bison used to put the properties of the symbols (associativity, printer, etc.) in the 'symbol' structure. An identifier-named token (FOO) and its string-named alias ("foo") duplicated these properties, and symbol_check_alias_consistency() checked that both had compatible properties and fused them, at the end of the parsing of the grammar. The commit a7280757105b2909f6a58fdd1c582de8e278319a introduces a sym_content structure that keeps all these properties, and ensures that both aliases point to the same sym_content (instead of duplicating). However, it removed symbol_check_alias_consistency, which resulted in the non-fusion of *existing* properties: %token FOO "foo" %left FOO %left "foo" was properly diagnosed as a redeclaration, but %left FOO %left "foo" %token FOO "foo" was not, as the properties of FOO and "foo" were not checked before fusion. It certainly also means that %left "foo" %token FOO "foo" did not transfer properly the associativity to FOO. The fix is simple: reintroduce symbol_check_alias_consistency (under a better name, symbol_merge_properties) and call it where appropriate. Also, that commit made USER_NUMBER_HAS_STRING_ALIAS useless, but left it. * src/symtab.h (USER_NUMBER_HAS_STRING_ALIAS): Remove, unused. Adjust dependencies. * src/symtab.c (symbol_merge_properties): New, based on the former symbol_check_alias_consistency. * tests/input.at: Re-enable tests that we now pass. 2013-12-10 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: package: install the examples package: install README and the like in docdir diagnostics: fix the order of multiple declarations reports symbol: provide an easy means to compare them in source order 2013-12-09 Akim Demaille package: install the examples Currently, we do not install the various examples extracted from the documentation. Let's do it, as they are useful starting points. * configure.ac: When --enable-gcc-warnings is set, enable ENABLE_GCC_WARNINGS. * examples/extexi: No longer issue synclines by default. * examples/local.mk: Except if ENABLE_GCC_WARNINGS. * examples/calc++/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk: Install the example files. 2013-12-09 Akim Demaille package: install README and the like in docdir * Makefile.am: here. 2013-12-09 Akim Demaille diagnostics: fix the order of multiple declarations reports On %token FOO "foo" %printer {} "foo" %printer {} FOO we report /tmp/foo.yy:2.10-11: error: %printer redeclaration for FOO %printer {} "foo" ^^ /tmp/foo.yy:3.10-11: previous declaration %printer {} FOO ^^ * src/symtab.c (locations_sort): New. Use it. * tests/input.at (Invalid Aliases): Stress the order of diagnostics. 2013-12-09 Akim Demaille symbol: provide an easy means to compare them in source order * src/symtab.c (symbols_sort): New. (user_token_number_redeclaration): Taken from here. 2013-12-09 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: (43 commits) maint: post-release administrivia version 3.0.2 gnulib: update output: do not generate source files when late errors are caught output: record what generated files are source or report files output: do not generate source files when early errors are caught xml: also use "%empty" with html output style: formatting changes xml: also display %empty for empty right-hand sides reports: display %empty in the generated pointed-rules news: YYERROR vs variants style: scope reduction in lalr.cc lalr1.cc: formatting changes lalr1.cc: fix the support of YYERROR with variants tests: check $$'s destruction with variant, YYERROR, and no error recovery tests: simplify useless obfuscation skeletons: use better names when computing a "goto" maint: post-release administrivia version 3.0.1 aver: it is no longer "protected against NDEBUG" ... 2013-12-05 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-12-05 Akim Demaille version 3.0.2 * NEWS: Record release date. 2013-12-05 Akim Demaille gnulib: update * gnulib: here. 2013-12-04 Akim Demaille output: do not generate source files when late errors are caught Reported by Alexandre Duret-Lutz as "second problem" in: http://lists.gnu.org/archive/html/bug-bison/2013-09/msg00015.html * bootstrap.conf: We need the "unlink" module. * src/files.h, src/files.c (unlink_generated_sources): New. * src/output.c: Use it. * tests/output.at: Check the case of late errors. 2013-12-04 Akim Demaille output: record what generated files are source or report files * src/files.h, src/files.c (output_file_name_check): Take an additional argument to record whether a file is a source or report file. * src/files.c (generated_file): New. (file_names, file_names_count): Replace with... (generated_files, generated_files_size): these. * src/scan-skel.l: Adjust. 2013-12-04 Akim Demaille output: do not generate source files when early errors are caught Reported by Alexandre Duret-Lutz as "second problem" in: http://lists.gnu.org/archive/html/bug-bison/2013-09/msg00015.html One problem is that some errors are caught early, before the generation of output files, while others can only be detected afterwards (since, for instance, skeletons can raise errors themselves). This will be addressed in two steps: early errors do not generate source files at all, while later errors will remove the files that have already been generated. * src/scan-skel.l (yyout): Open to /dev/null when there are errors. * tests/output.at (AT_CHECK_FILES): Factored out of... (AT_CHECK_OUTPUT): this. Fuse the "SHELLIO" argument in the "FLAGS" one. Use $5 to denote the expected exit status. Add a test case for early errors. 2013-11-26 Akim Demaille xml: also use "%empty" with html output * data/xslt/xml2xhtml.xsl: No longer issue an Epsilon, display as in dot and text formats. 2013-11-26 Akim Demaille style: formatting changes * src/print-xml.c: here. 2013-11-26 Akim Demaille xml: also display %empty for empty right-hand sides * data/xslt/xml2dot.xsl, data/xslt/xml2text.xsl: Display %empty where needed. 2013-11-26 Akim Demaille reports: display %empty in the generated pointed-rules * src/print.c (print_core): Use %empty for empty rules. * src/print_graph.c (print_core): Ditto. * tests/conflicts.at, tests/output.at, tests/reduce.at: Adjust expectations. 2013-11-26 Akim Demaille news: YYERROR vs variants 2013-11-18 Akim Demaille style: scope reduction in lalr.cc * src/lalr.c: Shorten variable scopes. (lookahead_tokens_print): Use the same variable name in two loops iterating over the same structure. 2013-11-15 Akim Demaille lalr1.cc: formatting changes * data/lalr1.cc: Fix indentation. 2013-11-15 Akim Demaille lalr1.cc: fix the support of YYERROR with variants When variant are enabled, the yylhs variable (the left-hand side of the rule being reduced, i.e. $$ and @$) is explicitly destroyed when YYERROR is called. This is because before running the user code, $$ is initialized, so that the user can properly use it. However, when quitting yyparse, yylhs is also reclaimed by the C++ compiler: the variable goes out of scope. Instead of trying to be too smart, let the compiler do its job: reduce the scope of yylhs to exactly the reduction. This way, whatever the type of scope exit (regular, exception, return, goto...) this variable will be properly reclaimed. Reported by Paolo Simone Gasparello. * data/lalr1.cc (yyparse): Reduce the scope of yylhs. * tests/c++.at: We now pass this test. 2013-11-15 Akim Demaille tests: check $$'s destruction with variant, YYERROR, and no error recovery When variant are enabled, the yylhs variable (the left-hand side of the rule being reduced, i.e. $$ and @$) is explicitly destroyed when YYERROR is called. This is because before running the user code, $$ is initialized, so that the user can properly use it. However, when quitting yyparse, yylhs is also reclaimed by the C++ compiler: the variable goes out of scope. This was not detected by the test suite because (i) the Object tracker was too weak, and (ii) the problem does not show when there is error recovery. Reported by Paolo Simone Gasparello. * tests/c++.at (Exception safety): Improve the objects logger to make sure that we never destroy twice an object. Also track copy-constructors. Use a set instead of a list. Display the logs before running the function body, this is more useful in case of failure. Generalize to track with and without error recovery. 2013-11-15 Akim Demaille tests: simplify useless obfuscation * tests/c++.at: $$ is not special for M4, there is no need to "escape" it. 2013-11-14 Akim Demaille skeletons: use better names when computing a "goto" * data/glr.c (yyLRgotoState): Name the symbol argument yysym, instead of yylhs. * data/lalr1.cc (yy_lr_goto_state_): Likewise. * data/lalr1.java (yy_lr_goto_state_): New, modeled after the previous two routines. Use it. 2013-11-12 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-11-12 Akim Demaille version 3.0.1 * NEWS: Record release date. 2013-11-12 Akim Demaille aver: it is no longer "protected against NDEBUG" Apply the same rules for aver as for assert: no side effects, especially not important ones. * src/AnnotationList.c, src/muscle-tab.c: Adjust aver uses to resist to -DNDEBUG. 2013-11-08 Akim Demaille parsers: rename YY_NULL as YY_NULLPTR to avoid conflicts with Flex Flex also defines YY_NULL (to 0). Avoid gratuitous conflicts. * data/c.m4 (b4_null_define): Rename YY_NULL as YY_NULLPTR. * data/glr.c, data/lalr1.cc, data/location.cc, data/variant.hh, * data/yacc.c, src/parse-gram.c, tests/actions.at, tests/c++.at, * tests/cxx-type.at, tests/glr-regression.at, tests/headers.at, * tests/push.at, tests/regression.at: Adjust. 2013-11-05 Akim Demaille build: use Automake 1.14's non-recursive Makefile features * configure.ac: Require Automake 1.14. * examples/calc++/local.mk, examples/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk, tests/local.mk: Use %D% and %C%. 2013-11-05 Akim Demaille build: restore maintainer-push-check * tests/local.mk: here. 2013-11-05 Akim Demaille c++: use __attribute__((__pure__)) to avoid warnings Building C++ parsers with -Wsuggest-attribute=const and -Wsuggest-attribute=noreturn triggers warning in generated code. * data/lalr1.cc: Call b4_attribute_define. (debug_stream, debug_level): Flag as pure. * tests/headers.at (Several parsers): There are now more YY macros that "leak". 2013-11-05 Akim Demaille skeletons: update the handling of compiler attributes * data/c.m4 (b4_attribute_define): Instead of defining __attribute__, define YY_ATTRIBUTE conditionally. (YY_ATTRIBUTE_PURE, YY_ATTRIBUTE_UNUSED, _Noreturn): New. Use them. * data/glr.c: Use them. 2013-11-05 Akim Demaille gnulib: update 2013-10-24 Akim Demaille style: use /* ... */ comments * src/complain.c: Here. 2013-10-24 Akim Demaille tests: skip C++ tests that are too demanding for some compilers Some tests now fail when compiled with G++ 4.3 or 4.4 on MacPorts. * tests/local.at (AT_SKIP_IF_EXCEPTION_SUPPORT_IS_POOR): New. * tests/c++.at (Exception safety): Use it. 2013-10-22 Akim Demaille install: do not install yacc.1 when --disable-yacc * configure.ac (ENABLE_YACC): New conditional. (YACC_SCRIPT, YACC_LIBRARY): Remove. * lib/local.mk, src/local.mk: Use the former instead of the latter. * doc/local.mk: Use ENABLE_YACC to avoid installing yacc.1. 2013-10-22 Akim Demaille style: avoid tabs * src/scan-code.l: here. 2013-10-22 Akim Demaille c++: fix generated doxygen comments * configure.ac: Enable -Wdocumentation if supported. * data/lalr1.cc: Fix comments. 2013-10-22 Akim Demaille fix: uniqstr are already pointers * src/uniqstr.c (uniqstr_assert): Remove incorrect double indirection, and now useless cast. 2013-10-22 Paul Eggert bison: pacify Sun C 5.12 * src/scan-code.l (show_sub_message): Redo initializations to work around a bogus Sun C 5.12 warning. (parse_ref): Remove unreachable code that Sun C 5.12 complains about. * src/uniqstr.h (uniqstr_vsprintf): Use _GL_ATTRIBUTE_FORMAT_PRINTF (...) instead of __attribute__ ((__format__ (__printf__, ...))). Otherwise, Sun C 5.12 complains about an unknown attribute. 2013-10-22 Paul Eggert maint: git now ignores rpcalc * examples/rpcalc/.gitignore: Ignore rpcalc. 2013-10-22 Paul Eggert build: examples/calc++/calc++ requires flex * configure.ac (FLEX_CXX_WORKS): New AM_CONDITIONAL. * examples/calc++/local.mk (examples/calc++/calc++): Build if FLEX_CXX_WORKS, not BISON_CXX_WORKS. 2013-10-22 Paul Eggert maint: mention help2man, texinfo, apt-get * README-hacking: Add help2man, texinfo. Describe how to add packages if you're using Debian. 2013-10-22 Paul Eggert maint: git now ignores .log and .trs files * .gitignore: Add *.log, *.trs. 2013-10-21 Akim Demaille tests: fix incorrect object construction Reported by Ken Moffat. http://lists.gnu.org/archive/html/bug-bison/2013-10/msg00009.html * tests/c++.at (Exception safety): Here. 2013-10-16 Akim Demaille glr: allow spaces between "%?" and "{" in predicates Reported by Rici Lake. http://lists.gnu.org/archive/html/bug-bison/2013-10/msg00004.html http://stackoverflow.com/questions/19330171/ * src/scan-gram.l: Do not try to be too smart when diagnosing invalid directives. * tests/glr-regression.at (Predicates): New test. 2013-10-16 Akim Demaille diagnostics: "-Werror -Wno-error=foo" must not emit errors Currently "-Werror -Wno-error=foo" still turns "foo" warnings into errors. Reported by Alexandre Duret-Lutz. See http://lists.gnu.org/archive/html/bug-bison/2013-09/msg00015.html. * src/complain.c (errority, errority_flag): New. (complain_init): Initialize the latter. (warning_argmatch): Extract the loop iterating on the flag's bits. Set and unset errority_flag here. (warnings_argmatch): -Wno-error is not the same as -Wno-error=everything: we must remember if category foo was explicitly turned in an error/warning via -W(no-)error=foo. (warning_severity): Use errority_flag. * tests/input.at (Symbols): Just check --yacc, not -Wyacc, that's the job of tests on -W. (-Werror is not affected by -Wnone and -Wall): Rename as... (-Werror combinations): this. Tests more combinations of -W, -W(no-)error, and -W(no-)error=foo. * tests/local.at (AT_BISON_CHECK_WARNINGS): Don't expect -Werror to turn runs that issue warnings into runs with errors, as the warnings might be enforced as warnings by -Wno-error=foo, in which case -Werror does not change anything. * doc/bison.texi (Bison Options): Try to be clearer about how -W(no-)error and -W(no-)error=foo interact. 2013-10-16 Akim Demaille comment changes * src/complain.h, src/complain.c: More documentation, more comments. 2013-10-04 Andreas Schwab location: fix EOF check * location.c (location_caret): Use int, not char, for values from getc. 2013-09-19 Akim Demaille style: variant: remove empty line * data/variant.hh (b4_symbol_constructor_define_): Remove stray eol. 2013-09-19 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: glr: more assertions glr: shorten scopes glr: formatting changes glr: better use of tracing macros examples: improve the output of the "variant" example variant: remove useless assertion tests: remove stray debugging traces tests: do not use grep -q build: don't require flex for ordinary builds maint: update .gitignore build: port to pre-5.8.7 perl tests: minor change to make it easier to test other skeletons uniqstr: fix assertion 2013-09-19 Akim Demaille glr: simplify the invocation of YYLLOC_DEFAULT The commit which introduces yyresolveLocations (commit 8710fc41aaebc5d167a2783a4b8b60849a803869) saves and restores the look-ahead (type, value and location) for no clear reason. This appears to be useless. * data/glr.c (yyresolveLocations): Don't save/restore the current look-ahead to call YYLLOC_DEFAULT. Minor style changes. 2013-09-19 Akim Demaille glr: more assertions * data/glr.c (yyaddDeferredAction, yyglrShiftDefer, yypdumpstack): More assertions. 2013-09-19 Akim Demaille glr: shorten scopes * data/glr.c (yyglrReduce): Define yyflag with its value. 2013-09-19 Akim Demaille glr: formatting changes * data/glr.c: here. 2013-09-19 Akim Demaille glr: better use of tracing macros * data/glr.c (yydestroyGLRState): Use YY_SYMBOL_PRINT instead of yy_symbol_print. 2013-09-19 Akim Demaille examples: improve the output of the "variant" example * examples/variant.yy: Improve the printing of lists. 2013-09-19 Akim Demaille variant: remove useless assertion * data/variant.hh (move): Remove precondition assertion which is ensured by the first call of the body (this precondition is also one of "build"). 2013-09-19 Akim Demaille tests: remove stray debugging traces * tests/atlocal.in: Remove traces. Be ready to remove conftest.dSYM generated on OS X. 2013-09-04 Akim Demaille tests: do not use grep -q Reported by Daniel Galloway. http://lists.gnu.org/archive/html/bug-bison/2013-08/msg00020.html * tests/java.at: Ignore grep's output instead. 2013-08-25 Paul Eggert build: don't require flex for ordinary builds * configure.ac (LEX): Don't fail if this is lex, as flex is not required for ordinary builds. Instead, issue a warning and substitute a no-op LEX. Reported by Michael Felt in . 2013-08-25 Paul Eggert maint: update .gitignore * .gitignore: Add *.eps, *.o, *.pdf, *.png, *.stamp, *~, .deps, .dirstamp. Needed to suppress unwanted chatter from 'git status' after a bootstrap build. 2013-08-24 Paul Eggert build: port to pre-5.8.7 perl * examples/local.mk (extract): Omit -f from perl options. This doesn't work with perl versions before 5.8.7 that are configured without USE_SITECUSTOMIZE. Reported by Michael Felt in . 2013-08-01 Akim Demaille tests: minor change to make it easier to test other skeletons * tests/c++.at (Variants): Pass the skeleton as argument. 2013-08-01 Valentin Tolmer uniqstr: fix assertion * src/uniqstr.c (uniqstr_assert): Really make sure str is a uniqstr, not just whether some uniqstr with the same content was registered. 2013-08-01 Valentin Tolmer symbols: improve symbol aliasing Rather than having duplicate info in the symbol and the alias that has to be resolved later on, both the symbol and the alias have a common pointer to a separate structure containing this info. * src/symtab.h (sym_content): New structure. * src/symtab.c (sym_content_new, sym_content_free, symbol_free): New * src/AnnotationList.c, src/conflicts.c, src/gram.c, src/gram.h, * src/graphviz.c, src/ielr.c, src/output.c, src/parse-gram.y, src/print.c * src/print-xml.c, src/print_graph.c, src/reader.c, src/reduce.c, * src/state.h, src/symlist.c, src/symtab.c, src/symtab.h, src/tables.c: Adjust. * tests/input.at: Fix expectations (order changes). 2013-08-01 Akim Demaille build: ship the ASCII art figures We don't ship the *.txt files that are used to build the info file. Reported by Colin Daley. * doc/figs/example.txt: New. * doc/local.mk (bison.info): Depend on the txt files. And ship them. 2013-08-01 Akim Demaille doc: prefer the ".gv" extension to ".dot" See http://marc.info/?l=graphviz-devel&m=129418103126092 for the motivation (basically, some word processor now uses *.dot). * doc/figs/example-reduce.dot: Rename as... * doc/figs/example-reduce.gv: this. * doc/figs/example-shift.dot: Rename as... * doc/figs/example-shift.gv: this. * doc/figs/example.dot: Rename as... * doc/figs/example.gv: this. * doc/local.mk: Adjust. 2013-07-25 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-07-25 Akim Demaille version 3.0 * NEWS: Record release date. 2013-07-25 Akim Demaille regen 2013-07-25 Akim Demaille news: prepare 3.0 * NEWS (3.0): Reorder. 2013-07-25 Akim Demaille tests: fix invalid assignment when using variants in C++11 * tests/c++.at (Exception safety): In variant mode $$ is an instance of Object. Assigning YY_NULL in C++98 is incorrect, but behaves ok, as it assigns YY_NULL=0 using Object::operator= (char v). It is wrong in C++11 as there is operator for "$$ = nullptr". 2013-07-25 Akim Demaille yacc: beware of "uninitialized uses" warnings Again some issues with the fact that yylval is reported by GCC as possibly not initialized in some cases. Here, the case at hand is the %destructor. I am still not convinced that it is worth going all the trouble of using pragmas to disable temporarily some warnings, instead of just initializing the looking symbol once for all, but that's what Paul voted for, see . * data/c.m4 (b4_attribute_define): Define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN, YY_IGNORE_MAYBE_UNINITIALIZED_END, YY_INITIAL_VALUE here, as we will need them in the generation of the destructor function, which is defined in yacc.c before yyparse, which was in charge of defining these macros. * data/yacc.c (b4_declare_scanner_communication_variables): Simplify: trying to factor the definitions of the case pure and impure is too complex. Actually, it is not even clear that this macro should really exist, as even the calls are complex. Be careful not to issue a lone ";", as this is a statement, and C90 forbids declarations after statements ; so write "YY_INITIAL_VALUE(Decl;)", not "YY_INITIAL_VALUE(Decl);". 2013-07-25 Akim Demaille gnulib: update 2013-07-03 Akim Demaille tests: skip C++ tests if we can't compile a simple program There are possible conflicts between gnulib replacement functions (in ) and their C++ wrappers (in ). Trying to address these in configure seems too hard, and I don't know how to fix the issue in gnulib. Cowardly avoid the problem by skipping C++ tests when this happens. Reported by Stefano Lattarini. http://lists.gnu.org/archive/html/bug-bison/2013-06/msg00001.html * tests/atlocal.in (BISON_CXX_WORKS): Also set it to "skip" if we can't compile a simple program using . * tests/local.at: Comment changes. 2013-07-03 Akim Demaille tests: fix 'find' portability issues Reported by Stefano Lattarini. http://lists.gnu.org/archive/html/bug-bison/2013-06/msg00000.html * tests/output.at (AT_CHECK_OUTPUT): Use Perl instead. 2013-06-24 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-06-24 Akim Demaille version 2.7.91 * NEWS: Record release date. 2013-06-24 Akim Demaille NEWS: prepare for 2.7.91 * NEWS (2.7.91): Java push parsers. 2013-06-24 Akim Demaille java: rename YYMORE as YYPUSH_MORE for consistency with C http://lists.gnu.org/archive/html/bison-patches/2013-06/msg00008.html * data/lalr1.java, doc/bison.texi, tests/javapush.at: s/YYMORE/YYPUSH_MORE. 2013-06-21 Akim Demaille tests: fix Java push failure when running with BISON_USE_PUSH_FOR_PULL * tests/javapush.at (Trivial Push Parser with api.push-pull verification): When push for pull is enabled, there is one such function generated. 2013-06-21 Akim Demaille style: minor changes in the Java tests * tests/java.at (AT_CHECK_JAVA_GREP): Ignore the exit status. * tests/javapush.at (AT_CHECK_JAVA_GREP): Be more alike the previous one. Formating changes. Remove stray debugging "jj" file. 2013-06-21 Akim Demaille java: push: do not reset the error counter * data/lalr1.java (parse): here, when in push-pull is in "both" mode. This breaks the test suite, for instance make check TESTSUITEFLAGS='-d 388 BISON_USE_PUSH_FOR_PULL=1'. More generally make maintainer-push-check. 2013-06-14 Akim Demaille build: add Valgrind suppression file for GNU/Linux * build-aux/linux-gnu.valgrind: New. * build-aux/local.mk: Ship it. * configure.ac: Use it. 2013-06-13 Dennis Heimbigner java: add push-parser support * data/lalr1.java: Capture the declarations as m4 macros to avoid duplication. When push parsing, the declarations occur at the class instance level rather than within the parse() function. Change the way that the parser state is initialized. For push-parsing, the parse state declarations are moved to "push_parse_initialize()", which is called on the first invocation of "push_parse()". The %initial-action code is also inserted after the invocation of "push_parse_initialize()". The body of the parse loop is modified to return values at appropriate points when doing push parsing. In order to make push parsing work, it is necessary to divide YYNEWSTATE into two states: YYNEWSTATE and YYGETTOKEN. On the first call to push_parse(), the state is YYNEWSTATE. On all later entries, the state is set to YYGETTOKEN. The YYNEWSTATE switch arm falls through into YYGETTOKEN. YYGETTOKEN indicates that a new token is potentially needed. Normally, with a pull parser, this new token would be obtained by calling "yylex()". In the push parser, the value YYMORE is returned to the caller. On the next call to push_parse(), the parser will return to the YYGETTOKEN state and continue operation. * tests/javapush.at: New test file for java push parsing. * tests/testsuite.at: Use it. * tests/local.mk: Adjust. * doc/bison.texi (Java Push Parser Interface): New. 2013-06-11 Akim Demaille build: ship all the files, even if the C++ compiler is broken * examples/calc++/local.mk: Be sure to ship calc++.test even if the current C++ compiler is not sufficient to run the tests. 2013-06-05 Dennis Heimbigner style: comment changes in Java skeleton * data/lalr1.java: Here. 2013-06-03 Akim Demaille tests: fix a G++ warning * tests/c++.at: Use YY_NULL instead of 0 for the null pointer. And formatting changes. 2013-06-03 Akim Demaille build: fix a warning from clang * src/muscle-tab.c: Declare local functions static. 2013-05-30 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-05-30 Akim Demaille version 2.7.90 * NEWS: Record release date. 2013-05-30 Akim Demaille style: syntax-check fixes * data/yacc.c, src/Sbitset.c, src/Sbitset.h, src/muscle-tab.h, * src/output.c, src/parse-gram.y, src/reader.c, src/symtab.c, * src/uniqstr.c, src/uniqstr.h: Fix space before parens. * cfg.mk (_space_before_paren_exempt): Add needed exceptions. 2013-05-30 Akim Demaille xml: use %empty in the text output * data/xslt/xml2text.xsl: here. 2013-05-30 Akim Demaille build: locally disable new GCC warnings that fail on Flex generated code * configure.ac: here. 2013-05-30 Akim Demaille fix a memory leak * src/print-xml.c (num_escape_bufs): New. (print_xml): Be sure to release all the escape_bufs. 2013-05-30 Akim Demaille regen 2013-05-30 Akim Demaille build: be sure to include config.h first in the generated parser Using %code for config.h is wrong, as some headers will already have been included by Bison. In some cases, e.g., glibc's string.h, this results in some declaration not being made for lack of definition of _GNU_SOURCE, which is performed by config.h. * src/parse-gram.y: here. 2013-05-29 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: post-release administrivia version 2.7.1 regen 2013-05-29 Petr Machata drop unused options --raw, -n, -e, --include and -I * --raw appears to be ignored. It was marked as obsolete in the commit ec3bc39, and documented as no longer supported as of 1.29 (2001-09-07). Support for %raw appears to have been dropped in e9955c83 on 2002-06-11, but --raw was kept around. Maybe it's time to drop it as well? * Commit e9955c83 dropped support for %no-parser as well, and converted it to option. --no-parser was later dropped in 728c4be2 on 2007-08-12, but -n was kept around, probably as an omission. All three are documented as removed since 2.3b (2008-05-27). * -e existed for a single day in 2001. It was introduced in eeeb962b on 2001-11-27. The handling was removed in c7925b99 on 2001-11-28, but "e" was kept in the list of short options. Probably an omission. * --include appears to be dead code. The option sets a variable, but that variable is not used anywhere. It was added in f6bd5427 on 2001-11-26 as a %-directive, with comments that it's not yet implemented. It was converted to a command-line option later, but doesn't seem to ever have been actually implemented. 2013-05-28 Akim Demaille gnulib: update 2013-04-22 Akim Demaille diagnostics: always point to the first directive Some directives cannot be used several times (e.g., a given symbol may only have a single printer). In case of repeated definitions, an error is issued for the second definition, yet it is not discarded, and becomes the definition used for the rest of the file. This is not consistent with the idea that multiple definitions are not allowed: discard any repeated directive. * src/symtab.c (symbol_type_set, symbol_code_props_set) (semantic_type_code_props_set, symbol_class_set, symbol_translation): Discard repeated directives. * tests/input.at (Default %printer and %destructor redeclared) (Per-type %printer and %destructor redeclared): Update expectations. 2013-04-22 Akim Demaille tests: factor test for printer/desctructor redefined * tests/input.at (Default %printer and %destructor redeclared): Introduce AT_TEST to factor. 2013-04-22 Akim Demaille diagnostics: use appropriate location for useless precedence/associativity * src/symtab.c (symbol_precedence_set): Use prec_location, not location (which is the first occurrence of the symbol, possibly just %token). Also, as redefinitions are not allowed, keep the first values, not the subsequent ones. * tests/conflicts.at, tests/existing.at, tests/regression.at: Adjust. 2013-04-22 Akim Demaille tests: factor duplicate expected warnings * tests/existing.at: Instead of "t ? abc : aBc", write "a(t?b:B)c". 2013-04-19 Akim Demaille tests: enable -Wsign-compare and fix corresponding warnings -Wsign-compare was disabled for bison's own code, following gnulib's approach. However, the generated parsers should not trigger such warnings. Reported by Efi Fogel. http://lists.gnu.org/archive/html/help-bison/2013-04/msg00018.html See also http://stackoverflow.com/questions/16101062 for the weird "-(unsigned)i" piece of code. * configure.ac (warn_tests): Enable -Wsign-compare. * data/location.cc (position::add_): New. (position::lines, position::columns): Use it. * tests/actions.at (AT_CHECK_PRINTER_AND_DESTRUCTOR): Fix signedness issues. 2013-04-18 Akim Demaille muscle: check more cases of %define variables with code values * data/bison.m4 (b4_percent_define_check_kind): Fix overquotation. (api.location.type, api.position.type): Check they have code values here. * data/c++.m4 (api.location.type): No longer checked here. (parser_class_name): Check it here. * data/java.m4 (api.value.type, init_throws, lex_throws, parser_class_name) (throws, annotations, extends, implements): Check they have code values. * doc/bison.texi: Fix every incorrect occurrence of %define. Document the additional syntax for %define: code values. Document the additional syntax for -D/-F: string and code values. * tests/calc.at, tests/headers.at, tests/input.at, tests/java.at, * tests/local.at: Fix dependencies. 2013-04-18 Akim Demaille regen 2013-04-18 Akim Demaille parser: do not convert $ and @ in code values of %define variables * src/parse-gram.y (value: "{...}"): Just strip the braces, but pass the value as is. 2013-04-18 Akim Demaille parser: no longer use the "braceless" non-terminal The purpose of this symbol was only to factor function calls. As a result the actions were indeed simpler, but the grammar was somewhat uselessly obfuscated. Get rid of this symbol, but introduce functions to simplify dependencies. There is no (intended) changes of behavior here. * src/parse-gram.y (strip_braces, translate_code( (translate_code_braceless): New. (braceless): Remove, use "{...}" instead, and one of the previous functions depending on the context. (STRING, "%{...%}", EPILOGUE): Declare as , instead of , the difference between both is useless (well, I couldn't make sense of it, even after having read the initial commit that introduced them). (%union): Remove the now useless "chars" type. Adjust the printers. * src/scan-gram.l: Adjust. 2013-04-18 Akim Demaille regen 2013-04-18 Akim Demaille style: avoid %{...%} in our parser * src/parse-gram.y (%{...%}): Split in %code and %code requires. * src/location.h: Add missing includes for self containedness. 2013-04-18 Akim Demaille style: use %code for local function declarations in our parser * src/parse-gram.y (version_check, gram_error, char_name, lloc_default): Move their prototypes from %{...%} to %code. (YYLLOC_DEFAULT, YY_LOCATION_PRINT): Move from %{...%} to %code. (current_lhs): Move its implementation to the epilogue. 2013-04-16 Akim Demaille regen 2013-04-16 Akim Demaille muscle: check the kind of api.prefix, api.location.type * data/bison.m4: Check api.prefix. * data/c++.m4: Check api.location.type. * doc/bison.texi: Fix uses of api.value.type, api.prefix, api.location.type. Document {...} values for %define. * src/parse-gram.y: Fix use of api.prefix. * tests/calc.at: Fix uses of api.location.type. * tests/input.at: Check api.prefix, and api.location.type. 2013-04-15 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2013-04-15 Akim Demaille version 2.7.1 * NEWS: Record release date. 2013-04-15 Akim Demaille regen 2013-04-15 Akim Demaille muscle: enforce definition syntax for keyword variables * src/muscle-tab.c (muscle_percent_define_get_kind) (muscle_percent_define_check_kind): New. (muscle_percent_define_default): Variables with a default value are of "keyword" kind. (muscle_percent_define_flag_if, muscle_percent_define_check_values): Check that the variable is of keyword kind. * data/bison.m4: Likewise, but in M4. That is to say... (b4_percent_define_default): Define the kind when the variable is undefined. (b4_percent_define_check_kind): Use a better error message. (_b4_percent_define_check_values, _b4_percent_define_check_values): Former "enum" variables should be defined using the keyword syntax. * doc/bison.texi: Update. A couple of fixes. * tests/input.at (%define keyword variables): New. 2013-04-15 Akim Demaille muscle: let -D/-F support the three kinds of %define variable values See http://lists.gnu.org/archive/html/bison-patches/2013-04/msg00012.html * src/getargs.c (getargs): Recognize {value} and "value" for -D and -F. 2013-04-15 Akim Demaille muscle: minor refactoring * src/muscle-tab.c (muscle_percent_define_default): Reduce the scopes. 2013-04-15 Akim Demaille muscle: minor simplification which uncovers a missing warning * src/muscle-tab.c (muscle_percent_define_ensure): Discover the virtues of || to factor conditionals. * NEWS: As api.pure is no longer flagged as "used" by accident, we now have warnings for useless definitions. * tests/calc.at: So remove api.pure settings when running C++ tests, since C++ skeletons use a pure interface. 2013-04-15 Akim Demaille muscle: factor the field retrieval * src/muscle-tab.c (muscle_percent_define_get_raw): New. Use it where appropriate. (location_decode): No longer fetch the value from the table, take the value as argument. 2013-04-15 Akim Demaille muscle: factor the handling of used variables * src/muscle-tab.c (muscle_percent_define_use): New, corresponding to b4_percent_define_use. Use it where appropriate. 2013-04-15 Akim Demaille muscle: factor the computation of variable names * src/muscle-tab.c (muscle_name): New. Use it. Propagate "uniqstr" as value type instead of plain "char const *". 2013-04-15 Akim Demaille muscle: factor the kind check in M4 * data/bison.m4 (b4_percent_define_check_kind): New. Use it to check api.token.prefix. * data/c++.m4: Check the kind of api.namespace. * doc/bison.texi: Update a reference to former 'namespace' variable. * tests/input.at ("%define" code variables): Check api.namespace. 2013-04-15 Akim Demaille muscle: factor conditionals on defined %define variables * data/bison.m4 (b4_percent_define_ifdef_): New. Use it where appropriate. 2013-04-11 Akim Demaille api.token.prefix: use code values * data/bison.m4: Remove useless (and incorrect: m4_* instead of b4_*) default assignment to api.token.prefix. Check that api.token.prefix is assigned code. * tests/input.at (%define code variables): New test. * NEWS, doc/bison.texi, tests/c++.at, tests/calc.at, * tests/java.at, tests/local.at: Adjust to use braces. 2013-04-11 Akim Demaille c++: fix several issues with locations Reported by Daniel Frużyński. http://lists.gnu.org/archive/html/bug-bison/2013-02/msg00000.html * data/location.cc (position::columns, position::lines): Check for underflow. Fix some weird function signatures. (location): Accept signed integers as arguments where appropriate. Add operator- and operator+=. * doc/bison.texi (C++ position, C++ location): Various fixes and completion. * tests/c++.at (C++ Locations): New tests. 2013-04-11 Akim Demaille muscles: be sure that %code snippets are not glue together on a single line Recently "braceless" in the parser was changed so that an eol was no longer added to the value. This is not correct when a %code is used multiple times, because the syncline of the next snippet might be appended to the last (and not ended) line of the previous snippet. * src/muscle-tab.h (muscle_grow): Make it private. * src/muscle-tab.c (muscle_grow): Accept a fourth argument: a required terminator. Adjust callers. * tests/input.at (Multiple %code): New. 2013-04-11 Akim Demaille style: fix comments * tests/actions.at: Fix incorrect "prototype". 2013-04-10 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: glr.cc: fix a clang warning maint: update copyright years build: fix VPATH issue build: avoid clang's colored diagnostics in the test suite tests: please clang and use ".cc", not ".c", for C++ input gnulib: update skeletons: avoid empty switch constructs lalr1.cc: fix compiler warnings yacc.c: do not use __attribute__ unprotected tests: style changes 2013-04-09 Akim Demaille api.value.type: use keyword/brace values Suggested by Joel E. Denny. http://lists.gnu.org/archive/html/bison-patches/2013-03/msg00016.html * data/bison.m4 (b4_percent_define_get_kind): New. (b4_variant_flag): Check that api.value.type is defined as the 'variant' keyword value. * data/c.m4 (_b4_value_type_setup_keyword): New. (b4_value_type_setup): Use it to simplify reading. Use b4_define_silent. Decode api.value.type, including its type. (b4_value_type_define): Likewise. * data/c++.m4 (b4_value_type_declare): Adjust the decoding of api.value.type, taking its kind into account. * doc/bison.texi: Adjust all the examples to the new syntax. * NEWS: Ditto. * tests/types.at: Adjust 2013-04-09 Akim Demaille api.value.type: diagnose guaranteed failure with --yacc Instead of generating invalid C code, generate an error when --yacc and '%define api.value.type union' are used together. * data/bison.m4: Issue an error in this case. * tests/types.at (%yacc vs. %define api.value.type union): New, check this error. * doc/bison.texi (Type Generation): Document it. * tests/output.at: Check that '-o y.tab.c' and '-y' behave equally wrt generated file names. * NEWS (Use of YACC='bison -y'): New. Promote the use of 'bison -o y.tab.c'. 2013-04-09 Akim Demaille doc: style changes * doc/bison.texi (Destructor Decl, Printer Decl): Group series of %token and %type together. 2013-04-09 Akim Demaille doc: display locations in error as recommended by GNU Coding Standards * doc/bison.texi (Actions and Locations): here. 2013-04-09 Akim Demaille doc: api.value.type union * doc/bison.texi (Type Generation): New section. (Multi-function Calc): Convert to use api.value.type=union. 2013-04-09 Akim Demaille doc: move the section about "%union" where types are discussed * doc/bison.texi (Union Decl): Move to... (Defining Language Semantics): here. 2013-04-09 Akim Demaille doc: deprecate #define YYSTYPE in favor of %define api.value.type * doc/bison.texi: Convert examples with YYSTYPE to use api.value.type. Deprecate YYSTYPE. 2013-04-09 Akim Demaille value type: accept "->" in type tags Provide a means to dereference pointers when defining tags. One example could be: %code requires { typedef struct ListElementType { union value { int intVal; float floatVal; char* charptrVal; } value; struct ListElementType* next; } ListElementType; } %union { ListElementType* list; } %token value.charptrVal> STRING %token value.intVal> INTEGER %token value.floatVal> REAL %type ElementList LiteralType * src/scan-code.l, src/scan-gram.l: Accept "->" in tags. * tests/types.at: Add more test cases to cover this case. 2013-04-09 Akim Demaille style: simplify the scanning of type tags * src/scan-gram.l: Remove the rule for simple tags: the "complex" case subsumes it. It was more efficient, but duplicated the code for a negligible benefit. 2013-04-09 Akim Demaille api.value.type: implement proper support, check, and document * data/c.m4 (b4_symbol_type_register, b4_type_define_tag) (b4_symbol_value_union, b4_value_type_setup_union) (b4_value_type_setup_variant, b4_value_type_setup): New. (b4_value_type_define): Use it to set up properly the type. Handle the various possible values of api.value.type. * data/c++.m4 (b4_value_type_declare): Likewise. * data/lalr1.cc (b4_value_type_setup_variant): Redefine. * tests/types.at: New. Exercise all the C/C++ skeletons with different types of api.value.type values. * tests/local.mk, tests/testsuite.at: Use it. * doc/bison.texi (%define Summary): Document api.value.type. * NEWS: Advertise it, together with api.token.constructor. 2013-04-09 Akim Demaille m4: allow the definition of side-effect only macros * data/bison.m4 (b4_divert_kill, b4_define_silent): New. * data/c.m4: Comment change. 2013-04-09 Akim Demaille variant: fix inconsistent quotation * data/variant.hh (b4_char_sizeof): De-overquote. (b4_value_type_declare): De-underquote. 2013-04-09 Akim Demaille m4: style changes in error messages * data/bison.m4: Use $0 to denote the current macro's name. 2013-04-08 Akim Demaille glr.cc: fix a clang warning * data/glr.cc (b4_epilogue): Be sure to end with an end-of-line, so that the file does end with one. 2013-04-08 Akim Demaille maint: update copyright years Run "make update-copyright". 2013-04-08 Akim Demaille build: fix VPATH issue * Makefile.am (update-b4-copyright, update-package-copyright-year): Fix path to build-aux. 2013-04-08 Akim Demaille build: avoid clang's colored diagnostics in the test suite The syncline tests, which try to recognize compiler diagnostics, are confused by escapes for colors. * configure.ac (warn_tests): New, to factor the warnings for both C and C++ tests. Add -fno-color-diagnostics to it. * tests/local.at (AT_TEST_TABLES_AND_PARSE): Do not remove glue together compiler flags. 2013-04-08 Akim Demaille tests: please clang and use ".cc", not ".c", for C++ input When fed with foo.c, clang++ 3.2 answers: clang: error: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use *.cc and *.hh for C++. 2013-04-08 Akim Demaille gnulib: update 2013-04-08 Akim Demaille skeletons: avoid empty switch constructs Reported by Rob Conde. http://lists.gnu.org/archive/html/bug-bison/2013-03/msg00003.html * data/c.m4 (b4_symbol_actions): Rename as... (_b4_symbol_actions): this. (b4_symbol_actions): New wrapper. Do not emit empty switches. Adjust all b4_symbol_actions callers. 2013-04-08 Akim Demaille lalr1.cc: fix compiler warnings Reported by Rob Conde. http://lists.gnu.org/archive/html/bug-bison/2013-03/msg00003.html * data/stack.hh (operator=, stack(const stack&)): Make this class uncopyable, i.e., "undefine" these operators: make them private and don't implement them. (clear): New. * data/lalr1.cc: Use it instead of an assignment. (parser): Make this class uncopyable. 2013-04-08 Akim Demaille yacc.c: do not use __attribute__ unprotected Reported by Victor Khomenko. http://lists.gnu.org/archive/html/bug-bison/2013-04/msg00001.html * data/glr.c (YYUSE, __attribute__): Fuse their definition into... * data/c.m4 (b4_attribute_define): this new macro. * data/yacc.c, data/glr.c: Use it. 2013-04-05 Akim Demaille api.namespace: demonstrate and use {...} values instead of "..." values * tests/c++.at, tests/input.at: Use "%define api.namespace {foo}" instead of using quotes. * tests/local.at (AT_SETUP_STRIP, AT_NAME_PREFIX): Recognize uses of braces instead of quotes. * doc/bison.texi: Use braces for api.namespace's values. 2013-04-05 Akim Demaille grammar: do not add a \n at the end of blocks of code Now that we use "braceless" (which is {...} blocks of code with initial and final braces stripped) to denote "short" values (such as api.namespaces), the added end-of-line is a nuisance. As a matter of fact, this extra-safety was useless, as every expansion of "braceless" (aka, "user code") is followed by an end of line. * src/parse-gram.y, src/parse-gram.c (braceless): Instead of replacing the final brace by \n, just delete the brace. 2013-04-04 Akim Demaille regen 2013-04-04 Akim Demaille grammar: record the kind of %define variable values Provide a means to tell the difference between "keyword" values (e.g., %define api.pull both), "string" values (e.g., %define file.name "foo"), and "code" values (e.g., %define api.namespace {calc}). Suggested by Joel E. Denny. http://lists.gnu.org/archive/html/bison-patches/2013-03/msg00016.html * src/muscle-tab.h, src/muscle-tab.c (muscle_kind, muscle_kind_new) (muscle_kind_string): New. (muscle_percent_define_insert): Take the kind as new argument. Insert it in the muscle table. Adjust callers. * src/getargs.c: Adjust callers. * src/parse-gram.y: Ditto. (content.opt): Remove, replaced by... (value): this new non-terminal, whose semantics value is stored in the new "value" union member. Provide a printer. Support values in braces in additions to keyword and string values. fuse me 2013-04-04 Akim Demaille style: fix comments * src/muscle-tab.c (muscle_percent_define_ensure): Update obsolete comments. 2013-04-04 Akim Demaille regen 2013-04-04 Akim Demaille grammar: style changes * src/parse-gram.y (PARAM_TYPE): Remove useless typedef guard. There's a header guard. Use 'yyo' with %printer. Use a consistent style for %union one-liners. 2013-04-04 Akim Demaille grammar: split %union to group together related aspects * src/parse-gram.y (INT): Fuse the %type and %token declaration. Move its %union right before its introduction. (%union): Split in several %unions, right before their use. 2013-04-04 Akim Demaille muscle: refactor * src/muscle-tab.c (muscle_lookup, muscle_entry_new): New. (muscle_insert, muscle_grow, muscle_find_const, muscle_find): Use them. 2013-04-03 Akim Demaille style: comment changes * src/muscle-tab.c: Move the documentation of public functions to... * src/muscle-tab.h: here. Fix comment consistency issues. 2013-04-03 Akim Demaille muscle: minor refactoring * src/muscle-tab.h (MUSCLE_INSERT_C_STRING): Use MUSCLE_INSERT_STRING. 2013-03-06 Akim Demaille regen 2013-03-06 Valentin Tolmer gram: correct token numbering in precedence declarations In a precedence declaration, when tokens are declared with a litteral character (e.g., 'a') or with a identifier (e.g., B), Bison behaved differently: the litteral tokens would be numbered first, and then the other ones, leading to the following grammar: %right A B 'c' 'd' being numbered as such: 'c' 'd' A B. * src/parse-gram.y (symbol.prec): Set the symbol number when reading the symbols. * tests/conflicts.at (Token declaration order: literals vs. identifiers): New. 2013-03-04 Akim Demaille maint: update autoconf submodule * submodules/autoconf: Up to master. No significant changes in the files we use (m4sugar.m4 and foreach.m4). 2013-03-04 Akim Demaille diagnostics: no longer include the yacc category in -Wall It would be a pity to warn the users against Bison features... http://lists.gnu.org/archive/html/bison-patches/2013-02/msg00107.html * src/complain.h, src/complain.c (Wall): Disable Wyacc. (Weverything): New (hidden so far) category which really denotes all the categories (what used to be Wall). (warnings_args, warnings_types): Adjust. (warning_argmatch): Now !none = Weverything and conversely, no longer Wall. * NEWS, doc/bison.texi, src/getargs.c: Adjust the documentation. * tests/input.at (-Werror is not affected by -Wnone and -Wall): Adjust by not using a -Wyacc type of warning. 2013-03-04 Akim Demaille grammar: no longer detect and cure missing semicolon at end of actions Bison 3.0 is already breaking backward compatibility with other features. It is an appropriate time to drop this feature. Note that it was disabled when --yacc is passed. See http://lists.gnu.org/archive/html/bison-patches/2013-02/msg00102.html Basically, revert e8cd1ad655bcc704b06fb2f191dc3ac1df32b796. * src/scan-code.l (braces_level, need_semicolon, in_cpp): Remove. Remove every rule needed to detect and add missing semicolon. * tests/actions.at (Fix user actions without a trailing semicolon): Remove. * NEWS: Adjust. 2013-03-04 Akim Demaille build: stop using bison -y * Makefile.am (YACC): Pass -o y.tab.c, so that ylwrap is happy, and yet we don't pass --yacc to bison. (AM_YFLAGS): Disable Yacc warnings. 2013-02-23 Akim Demaille c++: rename b4_semantic_type_declare as b4_value_type_declare This is to match the names used in C and api.value.type, even if the parser actually defines semantic_type. * data/c++.m4 (b4_semantic_type_declare): Rename as... (b4_value_type_declare): this. * data/variant.hh: Likewise. 2013-02-23 Akim Demaille news: typo * NEWS: here. 2013-02-23 Akim Demaille style: space changes in the tests * tests/local.at: here. 2013-02-22 Akim Demaille style: formatting changes in the doc * doc/bison.texi: Use @file where appropriate. 2013-02-19 Akim Demaille tests: fix invalid C++11 code * tests/c++.at (Object): Somehow instances of Object were assigned YY_NULL, which is 0 most of the time (that case passes), but is nullptr in C++11, and there is nothing in Object to support such an assignment (failure). Use 0 as value, and provide the needed assignment operator. Also, use a more natural order within the class definition. 2013-02-19 Akim Demaille tests: fix failures with G++ 4.8 in Flex scanner * configure.ac (WARN_NO_NULL_CONVERSION_CXXFLAGS): Rename as... (FLEX_SCANNER_CXXFLAGS): this. Pass -Wno-zero-as-null-pointer-constant to G++ if it supports it. * examples/calc++/local.mk: Adjust. 2013-02-19 Akim Demaille regen 2013-02-19 Akim Demaille gnulib: update 2013-02-19 Akim Demaille style: rename variant private members * data/variant.hh (buffer, tname, as_, raw, align_me): Rename as... (yybuffer_, yytname_,yyas_, yyraw, yyalign_me): these. 2013-02-19 Akim Demaille style: space changes * data/variant.hh: Be sure to leave a space before arguments in function calls. 2013-02-19 Akim Demaille variant: fix G++ 4.4 warnings The changes by Théophile Ranquet about type punning issues need to be extend to in-place new to please G++ 4.4.7. * data/variant.hh (variant::as_): New, factors the casts that avoid compiler warnings. (as, build): Use them. 2013-02-18 Akim Demaille news: spell fixes * NEWS: here. 2013-02-18 Akim Demaille diagnostics: factor and enhance messages about duplicate rule directives When reporting a duplicate directive on a rule, point to its first occurrence: one.y:11.10-15: error: only one %empty allowed per rule %empty {} %empty ^^^^^^ one.y:11.3-8: previous declaration %empty {} %empty ^^^^^^ And consistently discard the second one. * src/complain.h, src/complain.c (duplicate_directive): New. * src/reader.c: Use it where appropriate. * src/symlist.h, src/symlist.c (symbol_list): Add a dprec_location member. * tests/actions.at: Adjust expected output. 2013-02-18 Akim Demaille style: no longer use backquotes * tests/actions.at, tests/atlocal.in, tests/c++.at, tests/calc.at, * tests/conflicts.at, tests/existing.at, tests/glr-regression.at, * tests/input.at, tests/java.at, tests/local.at, tests/sets.at, * tests/synclines.at, doc/bison.texi, lib/libiberty.h, lib/timevar.h: Use single quotes. 2013-02-18 Akim Demaille style: no longer use backquotes * README, REFERENCES, TODO, configure.ac, data/README, data/bison.m4, * data/c++.m4, data/c.m4, data/java.m4, data/lalr1.cc, * data/lalr1.java, data/yacc.c, doc/local.mk, etc/bench.pl.in, * src/conflicts.c, src/files.c, src/getargs.c, src/gram.h, src/lalr.c, * src/location.c, src/location.h, src/muscle-tab.c, src/muscle-tab.h, * src/output.c, src/parse-gram.c, src/parse-gram.y, src/print-xml.c, * src/print.c, src/reader.c, src/reduce.c, src/scan-skel.l, * src/symtab.h, src/system.h, src/tables.c: Use single quotes, as currently recommended by the GNU Coding Standards. 2013-02-18 Akim Demaille style: no longer use backquotes in messages * src/getargs.c (usage): Use single quotes. 2013-02-18 Akim Demaille doc: use %empty instead of /* empty */ * doc/bison.texi: Change the comments into explicit %empty. 2013-02-18 Akim Demaille doc: introduce %empty and -Wempty-rule * doc/bison.texi (Grammar Rules): Make it a @section which contains... (Rules Syntax): this new subsection (with the previous contents of "Grammar Rules". (Empty Rules): New subsection, extracted from the former "Grammar Rules". Document %empty. (Recursion): New a subsection of "Grammar Rules". Complete a few index entries. (Bison Options): Document -Wempty-rule. 2013-02-18 Akim Demaille report: use %empty to denote empty rules * src/gram.c (rule_rhs_print): Use %empty for empty rules. * tests/conflicts.at, tests/regression.at, tests/sets.at: Adjust. 2013-02-18 Akim Demaille diagnostics: %empty enables -Wempty-rule * src/complain.h, src/complain.c (warning_is_unset): New. * src/reader.c (grammar_current_rule_empty_set): If enabled -Wempty-rule, if not disabled. * tests/actions.at (Implicitly empty rule): Check this feature. Also check that -Wno-empty-rule does disable this warning. 2013-02-18 Akim Demaille -Wempty-rule: diagnose empty rules without %empty * src/complain.h, src/complain.c (warning_empty_rule, Wempty_rule): New warning category. (warnings_args, warnings_types): Adjust. * src/reader.c (grammar_rule_check): Check the empty rules are flagged by %empty. * tests/actions.at (Implicitly empty rule): New. * tests/existing.at: Add expected warnings. 2013-02-18 Akim Demaille tests: use %empty * tests/actions.at, tests/input.at, tests/reduce.at, * tests/regression.at: here. 2013-02-18 Akim Demaille regen 2013-02-18 Akim Demaille parser: use %empty Avoid that Bison's own use of "bison -Wall" trigger warnings. * src/parse-gram.y: Use %empty for every empty rule. 2013-02-18 Akim Demaille grammar: introduce %empty Provide a means to explicitly denote empty right-hand sides of rules: instead of exp: { ... } allow exp: %empty { ... } Make sure that %empty is properly used. With help from Joel E. Denny and Gabriel Rassoul. http://lists.gnu.org/archive/html/bison-patches/2013-01/msg00142.html * src/reader.h, src/reader.c (grammar_current_rule_empty_set): New. * src/parse-gram.y (%empty): New token. Use it. * src/scan-gram.l (%empty): Scan it. * src/reader.c (grammar_rule_check): Check that %empty is properly used. * tests/actions.at (Invalid uses of %empty, Valid uses of %empty): New. 2013-02-16 Akim Demaille getargs: minor simplification * src/getargs.c (flag_argmatch): Simplify the handling of "none". 2013-02-16 Akim Demaille style: move argument handling of -W into the diagnostics module This allows to reduce the number of public interfaces. * src/getargs.c (--yacc): Use warning_argmatch instead of tweaking directly warnings_flag (which will be private). (warning_argmatch, warnings_argmatch): Move to... * src/complain.h, src/complain.c: here. * src/getargs.h, src/getargs.c (warnings_args, warnings_types): Move to... * src/complain.c: here, now private. * src/complain.h (severity, warnings_flag): Move to... * src/complain.c: here, now private. 2013-02-16 Akim Demaille diagnostics: revamp the handling of -Werror Recent discussions with Joel E. Denny (http://lists.gnu.org/archive/html/bison-patches/2013-02/msg00026.html) show that it is desirable to tell the difference between an option that was explicitly disabled with -Wno-foo, as opposed to be left unset. The current framework does not allow this. Instead of having a first int to store which options are enabled, and another to store which are turned into errors, use an array that for each warning category tells its status: disabled, unset, warning, error. * src/complain.h, src/complain.c (warning_bit): New enum. (warnings): Use it. (severity): New enum. (warnings_flag): Now an array of severity. (errors_flag): Remove, now done by warnings_flag. (complain_init): New function, to initialie warnings_flag. (warnings_are_errors): New Boolean, for -Werror. * src/complain.c (warning_severity): New. (warnings_print_categories, complains): Use it. * src/getargs.c (warning_argmatch): Adjust to use warnings_flag. (warnings_argmatch): Ditto. Handle -Werror and -Wno-error here. (getargs): Adjust. * src/main.c (main): Call complain_init. * tests/input.at (Invalid options): Add more corner cases. 2013-02-14 Akim Demaille options: simplify the handling of -W * src/getargs.c (warnings_argmatch, warning_argmatch): Simplify by replacing function arguments with their actual values. (WARNING_ARGMATCH): Remove, useless. Adjust callers. 2013-02-14 Akim Demaille options: don't accept "error=" for -f and -r * src/getargs.c (warning_argmatch, warnings_argmatch, WARNINGS_ARGMATCH): New. Use them for -W/--warning. They are copied from... (flag_argmatch, flags_argmatch, FLAGS_ARGMATCH): these. Simplify by removing the support for "error". * tests/input.at (Invalid options): New. * TODO (Laxism in Bison invocation arguments): Remove. 2013-02-14 Akim Demaille diagnostics: factor the list of warning names * src/getargs.h, src/getargs.c (warnings_args, warnings_types): Make them public. * src/complain.h, src/complain.c (warnings_print_categories): Its only use outside complain.c was removed in a recent commit, so make it static. Simplify its implementation. Use warnings_args and warnings_types. * src/muscle-tab.c (muscle_percent_define_check_values): Make it silent. 2013-02-14 Akim Demaille diagnostics: no longer pretty-print rules in error messages, carets suffice * src/gram.c (grammar_rules_useless_report): Let -fcaret handle the pretty-printing of the guilty rules. (rule_print): Inline in its only use. * tests/conflicts.at, tests/existing.at, tests/reduce.at, * tests/regression.at: Adjust. * NEWS: Document. 2013-02-14 Akim Demaille options: no longer document warnings when diagnosing an invalid -W The argmatch functions accept prefixes of the alternatives (like getopt does for long options). Bison uses this to document the warning categories. This is troublesome: it duplicates the --help documentation, it is not gettextized, it is displayed with ugly quotes (because argmatch uses it to display the list of possible answers), and it prevents straighforward uses of the tables of valid warning categories (for instance so that warning diagnostics end with the name of the warning). The "hidden" option --trace uses the same trick, but it does not need to be translated, nor to be described in --help. * src/getargs.c (warnings_args): Remove pseudo documentation. Comment changes. 2013-02-11 Akim Demaille tests: enlarge the allowed duration for calc tests Hydra "often" fails on this test: 252. calc.at:658: 252. Calculator %glr-parser api.pure parse.error=verbose %debug %locations %defines api.prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count} (calc.at:658): FAILED * tests/calc.at: Give 200s instead of 100s. Use AT_DEBUG_IF. 2013-02-11 Akim Demaille debug: improve the display of symbol lists * src/symtab.c (symbol_print): Remove useless quotes (the symbol already has quotes). Prefer fputs. * src/symlist.c (symbol_list_syms_print): Likewise. Fix separators. 2013-02-09 Akim Demaille style: minor changes * src/complain.c: Space changes. * src/reader.c: Comment changes. Avoid && in assertions. * src/location.c: Move comments to... * src/location.h: here. * src/symlist.h, src/symlist.c: Create a pseudo section for members that apply to the rule. 2013-02-08 Akim Demaille news: restructure, document variants for C++ * NEWS: here. 2013-02-08 Akim Demaille c++: api.token.constructor requires api.value.type=variant Eventually it should also support "union". * data/glr.cc: Move this check to... * data/c++.m4: here, as lalr1.cc is affected too. 2013-02-05 Akim Demaille build: restore C90 compatibility * src/parse-gram.y, src/parse-gram.c: Don't use // comments. 2013-02-05 Akim Demaille doc: use @group to improve page breaking * doc/bison.texi: here. 2013-02-04 Akim Demaille style: rename internal "stype" as "union_members" for clarity "stype" is quite unclear, and it also collides with the former %define variable that had the same name (replaced by api.value.type). * src/parse-gram.y (stype): Rename as... (union_members): this. * data/bison.m4: Adjust. (b4_user_stype): Rename as... (b4_user_union_members): this. * data/c++.m4, data/c.m4: Adjust. * src/parse-gram.c: regen. 2013-02-04 Akim Demaille tests: improve the language independance layer * tests/local.at (_AT_LANG_DISPATCH): New, shamelessly stolen from Autoconf's _AT_LANG_DISPATCH. (AT_LANG_DISPATCH): New. (AT_YYERROR_FORMALS, AT_YYERROR_PROTOTYPE, AT_YYERROR_DECLARE_EXTERN) (AT_YYERROR_DECLARE, AT_YYERROR_DEFINE, AT_MAIN_DEFINE, AT_COMPILE) (AT_FULL_COMPILE): Use AT_LANG_DISPATCH instead of an ad hoc m4_case. 2013-02-04 Akim Demaille regen 2013-02-04 Akim Demaille style: space changes in the parser * src/parse-gram.y: Fix spaces. 2013-02-04 Akim Demaille parser: use api.pure full * src/parse-gram.y: Use api.pure full instead of silly macro tricks. 2013-02-04 Akim Demaille style: use a for loop instead of a while loop, and scope reduction * src/reader.c (packgram): Improve readability. The parser calls grammar_current_rule_end at the end of every rhs, which adds a NULL to separate the rules. So there is no need to check whether "p" is non-null before proceeding. 2013-02-01 Theophile Ranquet variants: stylistic change * data/variant.hh (tname): Respect the GNU Coding Standards for this pointer's declaration. 2013-02-01 Theophile Ranquet grammar: free the association tracking graph The graph introduced by Valentin wasn't free'd after use. * src/symtab.c (assoc_free): New, clear the array of linked lists with... (linkedlist_free): This, new. (print_precedence_warnings): Call assoc_free when done. (print_assoc_warnings): Free used_assoc after use. 2013-02-01 Theophile Ranquet tests: use AT_FULL_COMPILE where possible * tests/c++.at (C++ Variant-based Symbol, Variants): Here. Rename the generated input files to use .y instead of .yy, as a requirement for using AT_FULL_COMPILE instead of a combination of AT_BISON_CHECK and AT_BISON_COMPILE_CXX. 2013-02-01 Theophile Ranquet variants: avoid type punning issue This is based on what is recommended by both Scott Meyers, in 'Effective C++', and Andrei Alexandrescu and Herb Sutter in 'C++ Coding Standards'. Use a static_cast on void* rather than directly use a reinterpret_cast, which can have nefarious effects on objects. However, even though following this guideline is good practice in general, I am not quite sure how relevant it is when applied to conversions from POD to objects. Actually, it might very well be the opposite: isn't this exactly what reinterpret_cast is for? What we really want *is* to transmit the memory map as a series of bytes, which, if I am correct, falls into the kind of "low level" hack for which this cast is meant. In any case, this silences the warning, which will be greatly appreciated by anyone using variants with a compiler supporting -fstrict-aliasing. * data/variant.hh (as): Here. * tests/c++.at (Exception safety, C++ Variant-based Symbols, Variants): Don't use NO_STRICT_ALIAS_CXXFLAGS (revert commit ddb9db15), as type punning is no longer an issue. * tests/atlocal.in, configure.ac (NO_STRICT_ALIAS_CXXFLAGS): Remove definition. * examples/local.mk (NO_STRICT_ALIAS_CXXFLAGS): Remove from AM_CXXFLAGS. * doc/bison.texi: Don't mention type punning issues. 2013-02-01 Theophile Ranquet todo: update Reformulate and give more details on my thoughts concerning the graphical visualization, and add an entry about a bug in the options processing for warnings as errors. * TODO: Here. 2013-02-01 Akim Demaille regen 2013-02-01 Akim Demaille location: pass the location first * src/location.h, src/location.c (location_print): For consistency with other data structures and other location_* routines, pass the location argument first. * src/complain.c: Adjust. (location_caret): Likewise. * src/parse-gram.y: Adjust. 2013-02-01 Akim Demaille symlist: use the right stream * src/symlist.c (symbol_list_syms_print): Use "f", not stderr. 2013-01-30 Akim Demaille tests: put two related tests together * tests/conflicts.at (Useless associativity warning): Move next to "Useless precedence warning". 2013-01-30 Akim Demaille news: name contributors * NEWS: here. 2013-01-30 Valentin Tolmer warnings: introduce -Wprecedence The new warning category "precedence" flags useless precedence and associativity. -Wprecedence can now be used, it is disabled by default. The warnings about precedence and associativity are grouped into one, and the testsuite was corrected accordingly. * src/complain.h (warnings): Introduce "precedence". * src/complain.c (warnings_print_categories): Adjust. * src/getargs.c (warnings_args, warning_types): Likewise. * src/symtab.h, src/symtab.c (print_associativity_warnings): Remove. * src/symtab.h (register_assoc): Correct arguments. * src/symtab.c (print_precedence_warnings): Print both warnings together. * doc/bison.texi (Bison options): Document the warnings and provide an example. * tests/conflicts.at, tests/existing.at, tests/local.at, * tests/regression.at: Adapt the testsuite for the new category (-Wprecedence instead of -Wother where appropriate). 2013-01-30 Akim Demaille build: avoid clang's colored diagnostics in the test suite The syncline tests, which try to recognize compiler diagnostics, are confused by escapes for colors. * configure.ac (warn_tests): New, to factor the warnings for both C and C++ tests. Add -fno-color-diagnostics to it. * tests/local.at (AT_TEST_TABLES_AND_PARSE): Do not remove glue together compiler flags. 2013-01-30 Akim Demaille build: please Clang++ 3.2+ on Flex scanners Clang++, with -Wall, rejects code generated by Flex (for C scanners): CXX examples/calc++/examples_calc___calc__-calc++-scanner.o In file included from examples/calc++/calc++-scanner.cc:1: error: implicit conversion of NULL constant to 'bool' [-Werror,-Wnull-conversion] if ( ! ( (yy_buffer_stack) ? (yy_buffer_stack)[(yy_buffer_stack_top)] : __null) ) { ~ ^~~~~~ false * configure.ac (WARN_NO_NULL_CONVERSION_CXXFLAGS): Compute it. * examples/calc++/local.mk (examples_calc___calc___CXXFLAGS): Use it. 2013-01-30 Valentin Tolmer grammar: record used associativity and print useless ones Record which symbol associativity is used, and display useless ones. * src/symtab.h, src/symtab.c (register_assoc, print_assoc_warnings): New * src/symtab.c (init_assoc, is_assoc_used): New * src/main.c: Use print_assoc_warnings * src/conflicts.c: Use register_assoc * tests/conflicts.at (Useless associativity warning): New. Due to the new warning, many tests had to be updated. * tests/conflicts.at tests/existing.at tests/regression.at: Add the associativity warning in the expected results. * tests/java.at: Fix the java calculator's grammar to remove a useless associativity. * doc/bison.texi (mfcalc example): Fix associativity to remove warning. 2013-01-29 Valentin Tolmer grammar: warn about unused precedence for symbols Symbols with precedence but no associativity, and whose precedence is never used, can be declared with %token instead. The used precedence relationships are recorded and a warning about useless ones is issued. * src/conflicts.c (resolve_sr_conflict): Record precedence relation. * src/symtab.c, src/symtab.h (prec_nodes, init_prec_nodes) (symgraphlink_new, register_precedence_second_symbol) (print_precedence_warnings): New. Record relationships in a graph and warn about useless ones. * src/main.c (main): Print precedence warnings. * tests/conflicts.at: New. 2013-01-29 Theophile Ranquet variants: remove the 'built' assertions When using %define parse.assert, the variants come with additional variables that are useful for development purposes. One is a Boolean indicating if the variant is built (to make sure we don't read a non-built variant), and the other is a string describing the stored type. There is no need to have both of these, the string is enough. * data/variant.hh (built): Remove. 2013-01-29 Akim Demaille style: indentation fixes * src/parse-gram.y: here. 2013-01-29 Akim Demaille maint: be sure to neutralize out-of-tree paths from our parser * tests/bison.in: Adjust to support fixed versions of ylwrap. 2013-01-29 Theophile Ranquet m4: generate a basic_symbol constructor for each symbol type Recently, there was a slightly vicious bug hidden in the make_ functions: parser::symbol_type parser::make_TEXT (const ::std::string& v) { return symbol_type (token::TOK_TEXT, v); } The constructor for symbol_type doesn't take an ::std::string& as argument, but a constant variant. However, because there is a variant constructor which takes an ::std::string&, this caused the implicit construction of a built variant. Considering that the variant argument for the symbol_type constructor was cv-qualified, this temporary variant was never destroyed. As a temporary solution, the symbol was built in two stages: symbol_type res (token::TOK_TEXT); res.value.build< ::std::string&> (v); return res; However, the solution introduced in this patch contributes to letting the symbols handle themselves, by supplying them with constructors that take a non-variant value and build the symbol's own variant with that value. * data/variant.hh (b4_symbol_constructor_define_): Use the new constructors rather than building in a temporary symbol. (b4_basic_symbol_constructor_declare, b4_basic_symbol_constructor_define): New macros generating the constructors. * data/c++.m4 (basic_symbol): Invoke the macros here. 2013-01-29 Theophile Ranquet c++: minor stylistic changes * data/c++m4: Remove useless comment lines. * data/variant.hh (self_type): Use this typedef instead of variant. (b4_symbol_constructor_define_): Remove commented-out line, and stylistic change (avoid blank line). 2013-01-29 Akim Demaille c++: please G++ 4.8 with -O3: type puning issue * tests/c++.at (Exception safety): Now that this test covers variants, pass -fno-strict-aliasing to g++. 2013-01-29 Akim Demaille c++: please G++ 4.8 with -O3: array bounds * data/c++.m4, data/lalr1.cc (by_state, by_type): Do not use -1 to denote the absence of value, as GCC then fears that this -1 might be used to dereference arrays (such as yytname). Use 0, which corresponds to $accept, which is valueless (the needed property: the symbol destructor must not try to reclaim the memory associated with the symbol). 2013-01-29 Akim Demaille c++: use more explicit types than int * data/c++.m4 (b4_public_types_declare): Declare token_number_type soon. Introduce symbol_number_type (wider than token_number_type). Clarify the requirement that kind_type from by_state and by_type denote the _input_ type (required by the constructor), not the stored type. Use symbol_number_type and token_number_type where appropriate, instead of int. * data/lalr1.cc: Adjust to these changes. Propagate "symbol_number_type". Invoke "type_get ()" instead of read "type" directly. 2013-01-29 Akim Demaille c++: value_type -> kind_type * data/c++.m4, data/lalr1.cc (by_type, by_state): Rename 'value_type' as 'kind_type', as it is clearer. 2013-01-29 Akim Demaille c++: improve the signature of yysyntax_error_ * data/lalr1.cc: This function is const. It takes a symbol_number_type. 2013-01-29 Akim Demaille c++: style changes * data/lalr1.cc: Formatting changes. And name changes. 2013-01-28 Akim Demaille doxygen: upgrade Doxyfile, and complete it * doc/Doxyfile.in: Let doxygen upgrade it. (INCLUDE_PATH): Point to lib too. (PROJECT_BRIEF): New. (EXCLUDE): Update to reflect the current file hierarchy. 2013-01-28 Akim Demaille maint: fix syntax-check issues * cfg.mk: Ignore strcmp in local.at. * tests/conflicts.at: Use AT_PARSER_CHECK. * tests/regression.at: Preserve the exit status of the generated parsers. * tests/local.mk ($(TESTSUITE)): Map @tb@ to a tabulation. * tests/c++.at, tests/input.at, tests/regression.at: Use @tb@. * cfg.mk: (space-tab): There are no longer exceptions. 2013-01-28 Akim Demaille tests: please C90 compilers * tests/actions.at, tests/conflicts.at: Use /* ... */ comments. Let "main" return a value. 2013-01-28 Akim Demaille maint: update todo * TODO: Remove fixed items. 2013-01-28 Akim Demaille news: minor improvements * NEWS: Name some more contributors. Restructure slightly. 2013-01-28 Akim Demaille tests: please clang and use ".cc", not ".c", for C++ input When fed with foo.c, clang++ 3.2 answers: clang: error: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use *.cc and *.hh for C++. 2013-01-28 Akim Demaille tests: formatting changes * tests/local.at: Restore proper indentation. 2013-01-28 Theophile Ranquet c++: better inline expansion Many 'inline' keywords were in the declarations. They rather belong in definitions, so move them. * data/c++.m4 (basic_symbol, by_type): Many inlines here. * data/lalr1.cc (yytranslate_, yy_destroy_, by_state, yypush_, yypop_): Inline these as well. (move): Move the definition outside the struct, where it belongs. 2013-01-28 Akim Demaille tests: check that using variants is exception safe * tests/local.at: (Slightly) improve the regexp by escaping '.' when it denotes a point. (AT_VARIANT_IF): New. * tests/c++.at (Exception Safety): Run it for variants too. 2013-01-28 Akim Demaille tests: remove useless %defines Many tests were using %defines because C++ skeletons used to require it. * tests/actions.at, tests/c++.at, tests/input.at, tests/regression.at: Remove useless %defines. 2013-01-28 Akim Demaille c++: remove now-useless operators Now that symbols behaves properly, we can eliminate special routines that are no longer needed. * data/c++.m4, data/glr.cc, data/lalr1.cc, data/variant.hh: Remove useless assignment operators and copy constructors. As a consequence, remove useless includes for "abort". 2013-01-28 Akim Demaille tests: enable support for --debug * tests/c++.at (Variants): Here. And remove useless clutter when api.token.constructor is enabled. 2013-01-28 Akim Demaille c++: revamp the support for variants The current approach was too adhoc: the symbols were not sufficiently self-contained, in particular wrt memory management. The "new" guideline is the one that should have been followed from the start: let the symbols handle themslves, instead of leaving their users to it. It was justified by the will to avoid gratuitious moves and copies, but the current approach does not seem to be slower, yet it will probably be simpler to adjust to support move semantics from C++11. The documentation says that the %parse-param are available from the %destructor. In retrospect, that was a silly design decision, which we can break for variants, as its a new feature. It should be phased out for non-variants too. * data/variant.hh: A variant never knows if it stores something or not, it is up to its users to store this information. Yet, in parse.assert mode, make sure the empty/filled variants are properly used. (b4_symbol_constructor_define_): Don't call directly the symbol constructor, to save a useless temporary. * data/stack.hh (push): Steal the pushed value instead of duplicating it. This will simplify the callers of push, who handled this "move" approach themselves. * data/c++.m4 (basic_symbol): Let -1, as kind, denote the fact that a symbol is empty. This is needed for instance when shifting the lookahead: yyla is given as argument to "push", and its value is then moved on the stack. But then yyla must be declared "empty" so that its destructor won't be called. (basic_symbol::move): New. Move the responsibility of calling the destructor from yy_destroy to ~basic_symbol in the case of variants. * data/lalr1.cc (stack_symbol_type): Now a derived class from its previous value, so that we can add a constructor from a symbol_type. (by_state): State -1 means empty. (yypush_): Factor, by calling one overload from the other one, and using the new semantics of stack::push. No longer reclaim by hand the memory from rhs symbols, since now that we store objects with proper destructors, they will be reclaimed automatically. Conversely, be sure to delete yylhs. * tests/c++.at (C++ Variant-based Symbols): New "unit" test for symbols. 2013-01-28 Akim Demaille c++: formatting and comment changes * data/c++.m4, data/lalr1.cc, data/stack.hh, data/variant.hh: Fix indentation. Fix some comments. 2013-01-27 Valentin Tolmer tests: add token declaration order test * tests/conflicts.at: New test. 2013-01-27 Akim Demaille regen 2013-01-27 Valentin Tolmer grammar: preserve token declaration order In a declaration %token A B, the token A is declared before B, but in %left A B (or with %precedence or %nonassoc or %right), the token B was declared before A (tokens were declared in reverse order). * src/symlist.h, src/symlist.c (symbol_list_append): New. * src/parse-gram.y: Use it instead of symbol_list_prepend. * tests/input.at: Adjust expectations. 2013-01-25 Akim Demaille tests: improve test group titles * tests/local.at (AT_SETUP_STRIP): AT_SETUP does not behave properly with new-lines in its argument. Remove them. Fix the handling of %define with quotes. 2013-01-25 Akim Demaille c: no longer require stdio.h when locations are enabled Recent changes (in 2.7) introduced a dependency on both FILE and fprintf, which are "available" only in %debug mode. This was to define yy_location_print_, which is used only in %debug mode by the parser, but massively used by the test suite to output the locations in yyerror. Break this dependency: the test suite should define its own routines to display the locations. Eventually Bison will provide the user with a means to display locations, but not yet. * data/c.m4 (b4_yy_location_print_define): Use YYFPRINTF instead of fprintf directly. * data/yacc.c (b4_yy_location_print_define): Invoke it only in %debug mode, so that stdio.h is included (needed for FILE*), and YYFPRINTF is defined. * tests/local.at (AT_YYERROR_DECLARE, AT_YYERROR_DEFINE): Declare and define location_print and LOCATION_PRINT. * tests/actions.at, tests/existing.at, tests/glr-regression.at, * tests/input.at, tests/named-refs.at, tests/regression.at: Adjust to use them. Fix the expected line numbers (as the prologue's length has changed). 2013-01-25 Akim Demaille c: minor simplification in the debug code * data/c.m4 (yy_symbol_print): Minor factoring. 2013-01-25 Akim Demaille c++: display locations as C does See commit 3804aa260b956dd012adde3894767254422a5fcf. * data/location.cc (operator<<): Display location exactly as is done in C skeletons. * tests/local.at (AT_LOC_PUSHDEF, AT_LOC_POPDEF): Also define AT_FIRST_LINE, AT_LAST_LINE, AT_FIRST_COLUMN, AT_LAST_COLUMN. * tests/actions.at (Location Print): Also check C++ skeletons. 2013-01-25 Akim Demaille tests: highlight empty right-hand sides * tests/actions.at, tests/c++.at, tests/headers.at, * tests/input.at: here. 2013-01-25 Akim Demaille news: prepare for 2.8 * NEWS: Restructure. Name contributors. 2013-01-21 Akim Demaille tests: generalize default main for api.namespace * tests/local.at (AT_NAME_PREFIX): Also match api.namespace. (AT_MAIN_DEFINE): Take it into account. * tests/c++.at, tests/headers.at: Use AT_NAME_PREFIX. (AT_CHECK_NAMESPACE): Rename as... (AT_TEST): this. 2013-01-21 Akim Demaille tests: improve factoring of the main function * tests/local.at (AT_MAIN_DEFINE): If %debug is used, check if -d/--debug is passed to the generated parser, and enable the traces. Return exactly the result of yyparse, so that we can check exit code 2 too. * tests/actions.at, tests/glr-regression.at, tests/regression.at: Use AT_MAIN_DEFINE, helping AT_BISON_OPTION_PUSHDEFS where needed, preferably to option -t. 2013-01-21 Akim Demaille tests: factor the definition of main With Théophile Ranquet. * tests/local.at (AT_MAIN_DEFINE): New. (AT_YYERROR_DEFINE): Improve formatting. * tests/actions.at, tests/c++.at, tests/conflicts.at, * tests/glr-regression.at, tests/input.at, tests/regression.at, * tests/skeletons.at, tests/torture.at: Adjust. * tests/c++.at: Add missing %skeleton for a PUSHDEFS, and a missing PUSH/POPDEFS for another test. 2013-01-21 Akim Demaille tests: minor refactoring * tests/named-refs.at: Use AT_FULL_COMPILE where applicable. 2013-01-21 Akim Demaille diagnostics: avoid useless caret stuttering * src/scan-code.l: When reporting a missing ending ';', don't display the guilty action twice. 2013-01-21 Theophile Ranquet examples: please clang * doc/bison.texi (calc++-scanner.ll): Don't output useless yyinput function. 2013-01-21 Theophile Ranquet tests: better silencing of unused argument warnings input.yy:35:44: error: unused parameter 'msg' [-Werror,-Wunused-parameter] void yy::parser::error (std::string const& msg) ^ * tests/c++.at (C++ GLR parser identifier shadowing): Don't name unused argument, use YYUSE instead of a direct cast to void. 2013-01-21 Theophile Ranquet bench: compatibility for Bison <= 2.7 There used to be a bug in some skeletons, which caused the expansion of 'yylval' and 'yylloc', generating these errors: input.cc:547:16: error: expected ',' or '...' before '(' token #define yylval (yystackp->yyval) ^ input.yy:29:39: note: in expansion of macro 'yylval' int yylex (yy::parser::semantic_type *yylval) ^ This bug is fixed by 'skel: better aliasing of identifiers', but a workaround is useful when benchmarking against older versions of Bison, which are still affected by the bug. * etc/bench.pl.in: Rename yylval to yylvalp and yylloc to yyllocp in base grammar 'list'. 2013-01-15 Theophile Ranquet c++: remove useless inlines * data/c++.m4 (basic_symbol): Keep 'inline' in the prototypes, but don't duplicate it in the implementation. * data/variant.hh (variant): 'inline' is not needed when the implementation is provided in the class definition. 2013-01-15 Theophile Ranquet c++: m4 stylistic change * data/c++.m4 (syntax_error): Fix the indentation of 'inline'. 2013-01-14 Theophile Ranquet c++: silence warnings * data/c++.m4 (basic_symbol::operator=): Unused parameter. * tests/c++.at (C++ GLR parser identifier shadowing): Here too. - 2013-01-14 Theophile Ranquet news: typos * NEWS: Fix a typo, use YYSTYPE rather than semantic_type. 2013-01-12 Akim Demaille regen 2013-01-12 Akim Demaille maint: update copyright years Suggested by Stefano Lattarini. Run "make update-copyright". 2013-01-12 Akim Demaille build: fix VPATH issue * Makefile.am (update-b4-copyright, update-package-copyright-year): Fix path to build-aux. 2013-01-11 Theophile Ranquet carets: document default activation * NEWS: Announce it. * doc/bison.texi: Adjust. 2013-01-11 Theophile Ranquet carets: show them in more tests * tests/input.at, tests/named-refs.at: Here. 2013-01-11 Theophile Ranquet carets: activate by default * src/getargs.c (feature_flag): Here. * tests/local.at (AT_BISON_CHECK_, AT_BISON_CHECK_NO_XML): Deactivate carets for the testsuite, by default. * tests/input.at: Adjust the locations for command line definitions. 2013-01-11 Theophile Ranquet variants: document move and swap * data/variant.hh (swap): Doc. (build): Rename as... (move): This, more coherent naming with clearer meaning. * data/c++.m4 (move): Adjust. 2013-01-11 Theophile Ranquet c++: privatize variant blind copies * data/variant.hh (variant, operator=): Make private. * data/c++.m4 (operator=): New, to avoid needing a definition of that operator for each class member (such as a possible variant). * data/glr.cc, data/lalr.cc: Add the necessary include for the abort. 2013-01-11 Akim Demaille glr.c: fix an unused argument issue * data/glr.c (yyuserAction): "Use" yyrhslen, as in variant mode, we might not use it. 2013-01-11 Akim Demaille glr.c: style changes * data/glr.c (yyuserAction): Use a size_t for sizes. 2013-01-11 Akim Demaille c.m4: style fix * data/c.m4 (b4_parse_param_use): Add missing space before paren. 2013-01-11 Theophile Ranquet skel: better aliasing of identifiers * data/glr.c, data/yacc.c: Avoid emitting useless defines. * data/glr.cc: Restore prefixes for epilogue. 2013-01-11 Theophile Ranquet glr.cc: fatal if using api.token.ctor without variants * data/glr.cc: Here. 2013-01-11 Theophile Ranquet skel: correctly indent switch cases * data/bison.m4 (b4_type_action_): Here. 2013-01-11 Theophile Ranquet variants: assert changes * data/variant.hh (swap): More asserts can't hurt. Don't perform useless swaps. (build): Deactivate problematic asserts, pending further investigation. (variant): Prohibit copy construction. 2013-01-11 Theophile Ranquet lalr1.cc: use a vector for the symbol stack * data/lalr1.cc: Adjust includes. * data/stack.hh (push, pop): Use push_back and pop_back. (operator []): Access vector from the end. 2013-01-11 Theophile Ranquet lalr1.cc: change symbols implementation A "symbol" groups together the symbol type (INT, PLUS, etc.), its possible semantic value, and its optional location. The type is needed to access the value, as it is stored as a variant/union. There are two kinds of symbols. "symbol_type" are "external symbols": they have type, value and location, and are returned by yylex. "stack_symbol_type" are "internal symbols", they group state number, value and location, and are stored in the parser stack. The type of the symbol is computed from the state number. The class template symbol_base_type factors the code common to stack_symbol_type and symbol_type. It uses the Curiously Recurring Template pattern so that we can always (static_) downcast to the exact type. symbol_base_type features value and location, and delegates the handling of the type to its parameter. When trying to generalize the support for variant, a significant issue was revealed: because stack_symbol_type and symbol_type _derive_ from symbol_base_type, the type/state member is defined _after_ the value and location. In C++ the order of the definition of the members defines the order in which they are initialized, things go backward: the value is initialized _before_ the type. This is wrong, since the type is needed to access the value. Therefore, we need another means to factor the common code, one that ensures the order of the members. The idea is simple: define two (base) classes that code the symbol type ("by_type" codes it by its type, and "by_state" by the state number). Define basic_symbol as the class template that provides value and location support. Make it _derive_ from its parameter, by_type or by_state. Then define stack_symbol_type and symbol_type as basic_symbol, basic_symbol. The name basic_symbol was chosen by similarity with basic_string and basic_ostream. * data/c++.m4 (symbol_base_type): Remove, replace by... (basic_symbol): which derives from its parameter, one of... (by_state, by_type): which provide means to retrieve the actual type of symbol. (symbol_type): Is now basic_symbol. (stack_symbol_type): Is now basic_symbol. * data/lalr1.cc: Many adjustments. 2013-01-11 Theophile Ranquet bench: add %b directive to use a specific Bison For example, $ bench.pl -v '%s lalr1.cc & %d variant & ( %b ~/old-bison/bin/bison | %b ~/new-bison/bin/bison )' -g list -i 10000 * etc/bench.pl.in: Here. 2013-01-09 Akim Demaille regen 2013-01-04 Akim Demaille gnulib: update 2012-12-31 Akim Demaille doc: use deffn to declare the list of %define variables * doc/bison.texi (%define Summary): Use @deffn instead of @table, it spares a lot of width, especially in PDF, and looks nicer in the other formats too. It is also more consistent with the rest of the document. 2012-12-31 Akim Demaille doc: minor completion and fixes * doc/bison.texi (%define Summary): Provide more history to some variables. 2012-12-31 Akim Demaille java: stype is obsoleted by api.value.type This is consistent with the other %define variable names. * data/java.m4: Use api.value.type instead of stype. * doc/bison.texi, NEWS: Document that change. * src/muscle-tab.c (muscle_percent_variable_update): Provide backward compatibility. * tests/java.at: Adjust. 2012-12-31 Akim Demaille doc: fix html build * doc/local.mk (bison.html): Fix dependencies. 2012-12-31 Akim Demaille todo: remove erroneous task * tests/input.at: Check that there are no warnings about stray $ and @ in the epilogue. * TODO: Remove the correponding task. 2012-12-31 Akim Demaille gnulib: update 2012-12-28 Akim Demaille regen 2012-12-28 Akim Demaille syncline: one line is enough So far we were issuing two lines for each syncline change: /* Line 356 of yacc.c */ #line 1 "src/parse-gram.y" This is a lot of clutter, especially when reading diffs, as these lines change often. Fuse them into a single, shorter, line: #line 1 "src/parse-gram.y" /* yacc.c:356 */ * data/bison.m4 (b4_syncline): Issue a single line. Comment improvements. (b4_sync_start, b4_sync_end): Issue a shorter comment. * data/c++.m4 (b4_semantic_type_declare): b4_user_code must be on its own line as it might start with a "#line" directive. 2012-12-28 Akim Demaille regen 2012-12-28 Akim Demaille maint: restore ANSI 89 compliance * data/bison.m4, src/conflicts.c, src/files.c, src/output.c, * src/symtab.c: Use /* ... */ comments only. Declare variables before statements. 2012-12-28 Akim Demaille graph: minor simplification * src/gram.c (print_lhs): Use %*s to indent. * src/print_graph.c (print_lhs): Use obstack_printf. Became simple enough to be inlined in... (print_core): here. Use a "rule*" instead of an index in "rules[]". 2012-12-28 Akim Demaille closure, gram: add missing const * src/closure.h, src/closure.c, src/gram.h, src/gram.c: Add some missing const where appropriate. 2012-12-27 Theophile Ranquet carets: properly display when no line feed is present * src/location.c (location_caret): finish the line with one whether or not it is present in input. Rewrite code without getline. (cleanup_caret): Reset the caret_info global. * bootstrap.conf: No longer require getline. 2012-12-27 Theophile Ranquet scanner: reintroduce unput for missing end tokens Unput was no longer used since a POSIX-compatiblity issue with Flex 2.5.31, which has been adressed in newer versions of Flex. See this discussion: This partially reverts commit aa4180418fff518198e1b0f2c43fec6432210dc7. * src/scan-gram.l (unexpected_end): Here. * tests/input.at: Adjust for new order of error reports. 2012-12-27 Akim Demaille tables: scope reduction * src/tables.c (default_goto): Make it easier to understand. 2012-12-27 Akim Demaille regen 2012-12-27 Akim Demaille skeletons: fix comments The commit 38de4e570fdc7c8db9633c3b2054e565d8c1c6b9 underquoted the content of the comments, which resulted in losing square brackets in the comments. Besides, some other invocations were underquoting the effective arguments. * data/c.m4 (b4_comment_): Properly quote the comment. (b4_comment_, b4_comment): Move to... * data/c-like.m4: here, so that... * data/java.m4: can use it instead of its own copy. * data/bison.m4 (b4_integral_parser_tables_map): Fix some comments. * data/lalr1.cc, data/lalr1.java, data/yacc.c: Comment fixes. * data/lalr1.cc: Reorder a bit to factor some CPP directives. 2012-12-27 Akim Demaille maint: which -> whose Apparently, I was confusing both. * data/bison.m4, data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c: Use "whose" where appropriate. 2012-12-26 Akim Demaille tables: scope reduction * src/tables.c (matching_state): here. 2012-12-26 Akim Demaille tables: scope reduction * src/tables.c (token_actions): here. 2012-12-26 Akim Demaille tables: scope reduction * src/tables.c (save_row): here. 2012-12-26 Akim Demaille tables: scope reduction * src/tables.c (save_column, pack_vector): Reduce the scope to emphasize the structure of the code. Rename the returned value "res" to make understanding easier. 2012-12-26 Akim Demaille tables: use size_t where appropriate These changes aim at making the code easier to understand. * src/tables.c (tally): This is a size, always >= 0, so make it a size_t. 2012-12-26 Akim Demaille tables: style changes * src/tables.c: Prefer < to >. Fix/complete some comments. Remove useless parens. 2012-12-26 Akim Demaille skeletons: no longer call yylex via a CPP macro The YYLEX existed only to support YYLEX_PARAM, which is now removed. This macro was a nuisance, since incorrect yylex calls where pointed the macro _use_, instead of its definition. * data/c.m4 (b4_lex_formals, b4_lex): New. * data/glr.c, data/yacc.c: Use it. * data/lalr1.cc (b4_lex): New. Use it. squash! skeletons: no longer call yylex via a CPP macro 2012-12-26 Akim Demaille YYLEX_PARAM: drop support * data/yacc.c, doc/bison.texi: Remove YYLEX_PARAM support. * NEWS: Document it. 2012-12-26 Akim Demaille examples: minor improvements * examples/variant.yy: Don't use debug_stream(), obsoleted. Use <*>. 2012-12-26 Akim Demaille skeletons: factor comments about symbols * data/variant.hh (b4_char_sizeof_): Rename as... * data/bison.m4 (b4_symbol_tag_comment): this. Provide more documentation about b4_symbol_*. 2012-12-26 Akim Demaille c: improve the definition of public types * data/c.m4 (b4_token_enum): Improve comments. (b4_value_type_define, b4_location_type_define): New, extracted from... (b4_declare_yylstype): here. Separate the typedefs from the union/struct definitions. 2012-12-26 Akim Demaille doc: update variant usage * doc/bison.texi, examples/variant.yy: Use "%define api.value.type variant", instead of "%define variant". 2012-12-26 Akim Demaille tests: check the "%define variant" is deprecated. * tests/input.at: Rename some AT_SETUP to avoid that AT_SETUP_STRIP thinks they contain %define directives. ("%define" backward compatibility): Merge tests together to speed up the test suite, and to make maintenance easier (multiple AT_CHECK means multiple runs of the test suite to be sure to have updated all the error messages). Check the "%define variant" is properly obsoleted. 2012-12-23 Akim Demaille %define variables: support value changes in deprecation * src/muscle-tab.c (define_directive): Be robust to "assignment" containing '='. (muscle_percent_variable_update): Upgrade "variant" to "api.value.type". Support such upgrade patterns. Adjust callers. * data/bison.m4: Use api.value.type for variants. * tests/c++.at: Adjust tests. 2012-12-23 Akim Demaille diagnostics: treat obsolete %define variable names as obsolete directives Instead of warning: deprecated %define variable name: 'namespace', use 'api.namespace' [-Wdeprecated] display (in -fno-caret mode): warning: deprecated directive: '%define namespace foo', use '%define api.namespace foo' [-Wdeprecated] and (in -fcaret mode): warning: deprecated directive, use '%define api.namespace toto' [-Wdeprecated] %define namespace toto ^^^^^^^^^ This is in preparation of cases where not only the variable is renamed, but the values are too: warning: deprecated directive: '%define variant', use '%define api.value.type variant' [-Wdeprecated] * src/muscle-tab.c (define_directive): New. (muscle_percent_variable_update): Take the value as argument, and use it in the diagnostics. Loop with a pointer instead of an index. * tests/input.at (%define backward compatibility): Adjust. 2012-12-23 Akim Demaille diagnostics: factor the deprecated directive message * src/complain.h, src/complain.c (deprecated_directive): New. * src/muscle-tab.c: Use it. 2012-12-23 Akim Demaille variant: produce stable results Improve the output by ensuring a well defined order for type switches. * src/uniqstr.h: Style changes for macro arguments. (UNIQSTR_CMP): Replace by... (uniqstr_cmp): this. * src/uniqstr.c (uniqstr_cmp): New. Produce well defined results. * src/output.c: Use it. 2012-12-23 Akim Demaille uniqstr: formatting changes * src/uniqstr.h: Sort functions by object type. 2012-12-23 Akim Demaille skeletons: fix an error message * data/bison.m4 (b4_flag_if): Display the invalid value. 2012-12-23 Akim Demaille tests: improve titles * tests/local.at (AT_SETUP_STRIP): New. (AT_SETUP): Use it to shorten the test titles: remove %defines, %language and %skeleton whose arguments suffice. * tests/synclines.at: Use more precise AT_SETUP. 2012-12-23 Akim Demaille c++: comment changes * data/c++.m4, data/glr.cc, data/lalr1.cc: Convert some /* ... */ comments to //. 2012-12-23 Akim Demaille c++: use // comments in the output This is mostly used for the license header, the synclines, and the generated tables: - /* STOS_[STATE-NUM] -- The (internal number of the) accessing - symbol of state STATE-NUM. */ + // STOS_[STATE-NUM] -- The (internal number of the) accessing + // symbol of state STATE-NUM. static const unsigned char yystos_[]; * data/c.m4: Comment changes. (b4_comment_): Expand the text argument. Before this change, we were actually formatting M4 code as a C comment, and then expand it. (b4_comment): Fix the closing of comments: there is no reason to add the (line) prefix before the closing "*/". * data/c++.m4 (b4_comment): New. 2012-12-21 Akim Demaille maint: disable sc_prohibit_test_backticks * cfg.mk: here. And fix typos. Reported by Stefano Lattarini. 2012-12-21 Akim Demaille maint: more syntax-checks * cfg.mk (sc_prohibit_tab_based_indentation, sc_prohibit_test_backticks) (sc_preprocessor_indentation, sc_space_before_open_paren): New, stolen from Coreutils (2e9f5ca4ebbbdb6a9fa2dd3d5add3f7720a172d7). 2012-12-21 Akim Demaille debug: no longer generate tabs * src/closure.c, src/derives.c, src/nullable.c, tests/sets.at: Use spaces. 2012-12-21 Akim Demaille style changes: run cppi Run it in src/ for a start. * src/AnnotationList.h, src/InadequacyList.h, src/Sbitset.h, * src/closure.c, src/complain.h, src/flex-scanner.h, src/getargs.h, * src/gram.h, src/graphviz.h, src/ielr.h, src/location.h, * src/muscle-tab.h, src/named-ref.h, src/relation.h, src/scan-code.h, * src/state.h, src/symtab.h, src/system.h, src/uniqstr.h: Reindent preprocessor directives. 2012-12-21 Akim Demaille style changes: untabify * data/xslt/xml2dot.xsl, data/xslt/xml2text.xsl, m4/flex.m4, * tests/glr-regression.at, tests/torture.at: here. 2012-12-21 Akim Demaille tests: be robust to set -e. * examples/test (run): here. 2012-12-19 Akim Demaille variants: prohibit simple copies The "variant" structure provides a means to store, in a typeless way, C++ objects. Manipulating it without provide the type of the stored content is doomed to failure. So provide a means to copy in a type safe way, and prohibit typeless assignments. * data/c++.m4 (symbol_type::move): New. * data/lalr1.cc: Use it. * data/variant.hh (b4_variant_define): Provide variant::copy. Let variant::operator= abort. We cannot undefine it, yet, as it is still uses by the implicit assigment in symbols, which must also be disabled. 2012-12-19 Akim Demaille variant: more assertions Equip variants with more checking code. Provide a means to request includes. * data/variant.hh (b4_variant_includes): New. * data/lalr1.cc: Use it. * data/variant.hh (variant::built): Define at the end, as a private member. (variant::tname): New. Somewhat makes "built" useless, but let's keep both for a start, in case using "typeinfo" is considered unacceptable in some environments. Fix some formatting issues. 2012-12-19 Akim Demaille gnulib: update 2012-12-19 Akim Demaille skeletons: fix output directives * data/lalr1.cc, data/location.cc, data/glr.cc: Use b4_output_begin. Broken during a merge. 2012-12-19 Akim Demaille yacc.c: style changes * data/yacc.c (b4_lex_param): Provide arguments with a name. 2012-12-19 Akim Demaille glr.cc: simplifying the handling of parse/lex params The fact that glr.cc uses glr.c makes the handling of parse params more complex, as the parser object of glr.cc must be passed to the parse function of glr.c. Yet not all the functions need access to the parser object. * data/glr.cc (b4_parse_param_wrap): New. Use them. 2012-12-19 Akim Demaille glr: rename lex params * data/glr.c (b4_lex_param): Rename as... (b4_lex_formals): this, for consistency. Provide arguments a name. (LEX): Adjust. 2012-12-19 Akim Demaille glr.c: move function declaration earlier * data/glr.c (yypstack, yypdumpstack): Declare earlier, to make it easier to call them from other functions. 2012-12-19 Akim Demaille %define variables: backward compatibility * src/muscle-tab.c (muscle_percent_variable_update): Accept lex_symbol. Reported by Roland Levillain. 2012-12-16 Akim Demaille diagnostics: improve -fcaret for list of accepted values Instead of input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither' %define api.push_pull "neither" ^^^^^^^^^^^^^ input.y:1.9-21: accepted value: 'pull' %define api.push_pull "neither" ^^^^^^^^^^^^^ input.y:1.9-21: accepted value: 'push' %define api.push_pull "neither" ^^^^^^^^^^^^^ input.y:1.9-21: accepted value: 'both' %define api.push_pull "neither" ^^^^^^^^^^^^^ report input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither' %define api.push_pull "neither" ^^^^^^^^^^^^^ input.y:1.9-21: accepted value: 'pull' input.y:1.9-21: accepted value: 'push' input.y:1.9-21: accepted value: 'both' * src/complain.h (no_caret): New. * src/complain.c (error_message): Use it. * src/muscle-tab.c (muscle_percent_define_check_values): Use it. * src/scan-skel.l (flag): Ditto. * tests/input.at: Adjust and check. 2012-12-16 Akim Demaille skeletons: simplify the handling of default api.location.type * data/bison.m4 (b4_bison_locations_if): New. * data/glr.cc, data/lalr1.cc: Use it. 2012-12-16 Akim Demaille tests: address syntax-check failures * cfg.mk: Ignore failures in timevar (uses GCC style configuration, not gnulib's). * doc/local.mk: Space changes. * lib/main.c, tests/calc.at: Remove useless HAVE_ tests. 2012-12-15 Akim Demaille remove duplicate definitions * src/system.h: here, inherited from a merge. 2012-12-15 Akim Demaille tests: style changes * tests/glr-regression.at: Issue yyerror before yylex. 2012-12-15 Akim Demaille doc: fix dependencies * doc/local.mk: here. 2012-12-14 Akim Demaille doc: style fixes * doc/bison.texi: Add a couple of missing @var and @code. 2012-12-14 Theophile Ranquet doc: fix build dependencies Suggested by Nick Bowler * doc/local.mk: Avoid overwriting Automake's rules. 2012-12-14 Akim Demaille Merge branch 'origin/maint' * origin/maint: maint: credit Wojciech Polak maint: post-release administrivia version 2.7 yacc.c: scope reduction tests: C90 compliance fix C90 compliance glr.c: scope reduction gnulib: update 2012-12-14 Theophile Ranquet symtab: add missing initializations * src/symtab.c (semantic_type_new): Here. 2012-12-14 Theophile Ranquet symtab: fix some leaks * src/symlist.c (symbol_list_free): Deep free it. * src/symtab.c (symbols_free, semantic_types_sorted): Free it too. (symbols_do, sorted): Call by address. 2012-12-14 Theophile Ranquet tests: remove use of PARSE_PARAM * tests/header.at: Here. 2012-12-13 Akim Demaille maint: credit Wojciech Polak * NEWS, THANKS: He is the author of XML support (including XSLTs). 2012-12-12 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-12-12 Akim Demaille version 2.7 * NEWS: Record release date. 2012-12-12 Akim Demaille yacc.c: scope reduction * data/yacc.c (yysyntax_error): here. 2012-12-12 Akim Demaille tests: C90 compliance * tests/synclines.at: here. 2012-12-12 Akim Demaille fix C90 compliance * data/glr.c, src/graphviz.h, src/ielr.c, src/scan-gram.l, * src/system.h, tests/actions.at, tests/glr-regression.at: Do not use // comments. Do not introduce variables after statements. Provide "main" with a return value. 2012-12-12 Akim Demaille glr.c: scope reduction * data/glr.c (yyreportSyntaxError): Reduce the scope of yysize1 (now yysz). 2012-12-12 Akim Demaille gnulib: update 2012-12-10 Theophile Ranquet Merge remote-tracking branch 'origin/maint' * origin/maint: news: prepare for forthcoming release doc: explain how mid-rule actions are translated error: use better locations for unused midrule values doc: various minor improvements and fixes tests: ignore more useless compiler warnings tests: be robust to C being compiled with a C++11 compiler build: beware of Clang++ not supporting POSIXLY_CORRECT maint: post-release administrivia version 2.6.90 build: fix syntax-check error. cpp: simplify the Flex version checking macro news: improve the carets example and fix a typo cpp: improve the Flex version checking macro carets: improve the code maint: update news build: keep -Wmissing-declarations and -Wmissing-prototypes for modern GCCs build: drop -Wcast-qual gnulib: update 2012-12-09 Akim Demaille news: prepare for forthcoming release * NEWS: Fill paragraph. Reorder. Update examples. Remove line for 2.6.90. 2012-12-09 Akim Demaille doc: explain how mid-rule actions are translated * doc/bison.texi (Actions in Mid-Rule): Mention and use named references. Split into three subsections, among which... (Mid-Rule Action Translation): this new section. 2012-12-09 Akim Demaille error: use better locations for unused midrule values On %% exp: {;} {$$;} { $$ = $1; } instead of reporting (with -fcaret -Wmidrule-value) midrule.y:2.6-8: warning: unset value: $$ [-Wmidrule-values] exp: {;} {$$;} { $$ = $1; } ^^^ midrule.y:2.6-27: warning: unused value: $2 [-Wmidrule-values] exp: {;} {$$;} { $$ = $1; } ^^^^^^^^^^^^^^^^^^^^^^ report midrule.y:2.6-8: warning: unset value: $$ exp: {;} {$$;} { $$ = $1; } ^^^ midrule.y:2.10-14: warning: unused value: $2 exp: {;} {$$;} { $$ = $1; } ^^^^^ * src/reader.c (grammar_rule_check): When warning about the value of a midrule action, use the location of the midrule action instead of the location of the rule. the location of the part of the rule. * tests/actions.at (Default %printer and %destructor for mid-rule values): Adjust expectations * tests/input.at (Unused values with default %destructor): Ditto. (AT_CHECK_UNUSED_VALUES): Ditto. And use -fcaret. 2012-12-09 Akim Demaille doc: various minor improvements and fixes * doc/figs/example.dot, doc/figs/example.y: New. * doc/bison.texi: Prefer "token" to TOKEN. Use @group where appropriate. Adjust with style changes in the output (State 0, not state 0). Fix some @ref that were missing the third argument. Fix some incorrect line numbers. Use "nonterminal", not "non-terminal". Fix overfull and underfull TeX hboxes. Put the comments in the index. Remove duplicate index entries. Fuse glossary entries where appropriate. (Understanding): Improve the continuity between sections. Use example.dot to show the whole graph. * doc/Makefile.am: Adjust. 2012-12-09 Akim Demaille tests: ignore more useless compiler warnings * tests/synclines.at (AT_SYNCLINES_COMPILE): Ignore complains about using c++ to compile C. 2012-12-09 Akim Demaille tests: be robust to C being compiled with a C++11 compiler * tests/glr-regression.at: Use YY_NULL instead of NULL. Comment changes. 2012-12-09 Akim Demaille build: beware of Clang++ not supporting POSIXLY_CORRECT * m4/c-working.m4 (BISON_LANG_COMPILER_POSIXLY_CORRECT): New. (BISON_C_COMPILER_POSIXLY_CORRECT): Use it. For consistency with C++, also define BISON_C_WORKS. * m4/cxx.m4 (BISON_CXX_COMPILER_POSIXLY_CORRECT): New. * configure.ac: Use it. * tests/atlocal.in: Get its result. Propagate properly CXX values when used to compile C. When POSIXLY_CORRECT, adjust BISON_C_WORKS and BISON_CXX_WORKS. * tests/local.at (AT_COMPILE): Use BISON_C_WORKS. 2012-12-07 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-12-07 Akim Demaille version 2.6.90 * NEWS: Record release date. 2012-12-07 Akim Demaille build: fix syntax-check error. * cfg.mk: Exclude names-refs, it includes a "double" if (end of first line, first of second line below). test.y:43.12-44.59: symbol not found in production: if if-stmt-a: IF expr[cond] THEN stmt.list[then] ELSE stmt.list[else] FI ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2012-12-07 Theophile Ranquet cpp: simplify the Flex version checking macro * src/flex-scanner,h (FLEX_VERSION): Consider YY_FLEX_SUBMINOR_VERSION defined. 2012-12-07 Theophile Ranquet news: improve the carets example and fix a typo * NEWS: Here. 2012-12-07 Theophile Ranquet cpp: improve the Flex version checking macro * src/flex-scanner.h (FLEX_VERSION): Here. 2012-12-07 Theophile Ranquet carets: improve the code * src/location.c: Remove duplicate documentations. (caret_info): Stylistic change. (location_caret): Many reworks. 2012-12-07 Akim Demaille maint: update news * NEWS: There is no 2.6.6, remove its stub. 2012-12-07 Akim Demaille build: keep -Wmissing-declarations and -Wmissing-prototypes for modern GCCs Fixes a -Werror failure of xalloc.h used in src. From Eric Blake. http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00006.html * configure.ac: Check whether GCC pragma diagnostic push/pop works. Enable these warnings for bison if it does. Enable these warnings for the test suite anyway. 2012-12-07 Akim Demaille build: drop -Wcast-qual Suggested by Jim Meyering. http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00017.html * configure.ac (warn_common): Remove -Wcast-qual. 2012-12-07 Akim Demaille gnulib: update 2012-12-06 Theophile Ranquet Merge remote-tracking branch 'origin/maint' * origin/maint: misc: pacify the Tiny C Compiler cpp: make the check of Flex version portable misc: require getline c++: support wide strings for file names doc: document carets tests: enhance existing tests with carets errors: show carets getargs: add support for --flags/-f 2012-12-06 Theophile Ranquet misc: pacify the Tiny C Compiler * src/graphviz.c (conclude_red): Remove a useless return. 2012-12-05 Theophile Ranquet cpp: make the check of Flex version portable This was problematic with tcc 0.9.25 * src/flex-scanner.h (FLEX_VERSION_GT): Rewrite and rename as... (FLEX_VERSION): This. 2012-12-05 Theophile Ranquet misc: require getline * bootstrap.conf: Here, used by src/location.c. * src/getargs.c (long_options): Rename --flags to --feature. 2012-12-05 Akim Demaille c++: support wide strings for file names Reported by Mark Boyall. http://lists.gnu.org/archive/html/help-bison/2011-08/msg00002.html * data/location.cc (operator<<): Be templated on the type of output stream. * tests/headers.at (Several parsers): Adjust. 2012-12-05 Theophile Ranquet doc: document carets * NEWS: Announce it. * doc/bison.texi (Bison Options): Here. 2012-12-05 Theophile Ranquet tests: enhance existing tests with carets * tests/actions.at: Unset value. * tests/conflicts.at: Rule useless due to conflicts. * tests/input.at: Missing terminator, unexpected end of file, command line redefinition of variable. * tests/named-refs.at: Many errors. * tests/reduce.at: Useless nonterminals and rules. * tests/regression.at: Large token. 2012-12-05 Theophile Ranquet errors: show carets * src/locations.c (caret_info): New, persistant information useful for... (location_caret): New, print a caret. (cleanup_caret): Release caret_info cleanly, call it... * src/main.c (main): Here. * src/complain.c (error_message): Call location_caret here. 2012-12-05 Theophile Ranquet getargs: add support for --feature/-f Introduce -fdiagnostics-show-caret * src/getargs.c (feature_flag): New global. * src/getargs.h (feature): New enum. 2012-12-05 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: getargs: don't label --language/-l as experimental getargs: fix the locations of command-line input errors: indent missing action code semicolon warning 2012-12-04 Theophile Ranquet getargs: don't label --language/-l as experimental * NEWS: Announce it. * doc/bison.texi, src/getargs.c (usage): Here. 2012-12-03 Akim Demaille tests: minor improvements * tests/calc.at (AT_CHECK_SPACES): To speed up, accept several files at once, and factor some calls. 2012-12-03 Theophile Ranquet getargs: fix the locations of command-line input * src/getargs.c (command_line_location): Here. * tests/input.at: Adjust. 2012-12-03 Theophile Ranquet errors: indent missing action code semicolon warning Also, remove a duplicate #define. * src/scan-code.l (SC_RULE_ACTION): Here. * tests/actions.at: Adjust. 2012-12-03 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: parser: accept #line NUM m4: use a safer pattern to enable/disable output tests: beware of gnulib's need for config.h gnulib: update yacc.c, glr.c: check and fix the display of locations formatting changes glr.c: remove stray macro 2012-12-03 Akim Demaille parser: accept #line NUM * src/scan-gram.l (scanner): Accept '#line NUM'. (handle_syncline): Adjust to the possible missing file name. 2012-12-03 Akim Demaille m4: use a safer pattern to enable/disable output Work on some other areas of Bison revealed that some macros expanded to be expanded only once were actually expanded several times. This was due to the fact that changecom was not properly restored each time, and macro names appearing in comments were then expanded. Introduce begin/end macros which are easier to match that changecom()/changecom(#). * data/bison.m4 (b4_output_begin, b4_output_end): New. * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, * data/location.cc, data/stack.hh, data/yacc.c: Use them. 2012-12-03 Akim Demaille tests: beware of gnulib's need for config.h * tests/skeletons.at, tests/torture.at: Be sure to include config.h where appropriate. 2012-11-30 Akim Demaille gnulib: update * lib/yyerror.c: Include config.h since the following stdio.h might be from gnulib. 2012-11-30 Akim Demaille yacc.c, glr.c: check and fix the display of locations In some case, negative column number could be displayed. Make YY_LOCATION_PRINT similar to bison's own implementation of locations. Since the macro is getting fat, make it a static function. Reported by Jonathan Fabrizio. * data/c.m4 (yy_location_print_define): Improve the implementation, and generate the yy_location_print_ function. Adjust YY_LOCATION_PRINT. * tests/actions.at (Location Print): New tests. 2012-11-30 Akim Demaille formatting changes * data/c.m4: Fix comments, put macros in a more natural order. Space changes (from M-x whitespace-cleanup). * src/location.c: Fix spaces. * tests/actions.at: Space changes. 2012-11-30 Akim Demaille glr.c: remove stray macro * data/glr.c (YYOPTIONAL_LOC): Remove, unused since commit 769a8ef9bcb5e14d0be9d0869f5dca20ab093930. 2012-11-29 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: doc: minor fixes doc: improve the index doc: introduce api.pure full, rearrange some examples yacc.c: support "%define api.pure full" local.at: improvements 2012-11-29 Akim Demaille doc: minor fixes * doc/bison.texi: Use stderr for error messages. Meta-variables are usually spelled in lower case. Use @code for function names. 2012-11-29 Akim Demaille doc: improve the index * doc/bison.texi: Fix uses of "deffn" so that the arguments of the directives do not show in the index. Remove a duplicate entry for api.pure. 2012-11-29 Theophile Ranquet doc: introduce api.pure full, rearrange some examples * NEWS: Add entry. * doc/bison.texi (%define Summary): Show the old Yacc behaviour. (Parser Function): Move parse-param examples here. (Pure Calling): Remove parse-param examples. (Error Reporting): Don't show the old behavior, stick to 'full'. 2012-11-29 Theophile Ranquet yacc.c: support "%define api.pure full" This makes the interface for yyerror() pure without the need for a spurious parse_param. * data/yacc.c (b4_pure_if, b4_pure_flag): New definition, accept three states. (b4_yacc_pure_if): Rename as... (b4_yyerror_arg_loc_if): This, and use b4_pure_flag. * tests/actions.at (%define api.pure): Modernize. * test/calc.at (Simple LALR Calculator): Modernize. * tests/local.at (AT_YYERROR_ARG_LOC_IF): Adjust. 2012-11-28 Akim Demaille tests: check variants without locations * tests/c++.at (Variants): Support non-use of locations, and check its support. 2012-11-26 Theophile Ranquet local.at: improvements * tests/local.at (AT_YYERROR_FORMALS): Make llocp const. (AT_PURE_AND_LOC_IF, AT_GLR_OR_PARAM_IF): Remove, expand... (AT_YYERROR_ARG_LOC_IF): Here, and use m4_join for readability. 2012-11-26 Akim Demaille tests: use -fno-strict-aliasing with variants Reported by Théophile Ranquet. * configure.ac (NO_STRICT_ALIAS_CXXFLAGS): New. * tests/c++.at, tests/atlocal.in, examples/local.mk: Use it. 2012-11-26 Akim Demaille tests: remove leftover * tests/atlocal.in: Remove duplicate handling of --compile-c-with-cxx. 2012-11-26 Akim Demaille doc: use %precedence instead of nonassoc when associativity is not wanted * doc/bison.texi: here. Formatting changes in some grammars. Fix a %prec into %precedence. 2012-11-26 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: yacc.c: always initialize yylloc scanner: issue a single error for groups of invalid characters tests: formatting changes doc: one of the fixes for an ambiguous grammar was ambiguous too doc: fix the dangling else with precedence directives doc: prefer "token" to TOKEN doc: formatting changes scanner: use explicit "ignore" statements 2012-11-26 Akim Demaille Merge remote-tracking branch 'origin/branch-2.6' into maint * origin/branch-2.6: yacc.c: always initialize yylloc doc: one of the fixes for an ambiguous grammar was ambiguous too doc: fix the dangling else with precedence directives doc: prefer "token" to TOKEN doc: formatting changes 2012-11-23 Theophile Ranquet yacc.c: always initialize yylloc The initial location might be used if the parser starts by an empty reduction, so really ensure proper initialization of the initial location. The previous approach fails for PostgreSQL, which uses Reported by Peter Eisentraut. http://lists.gnu.org/archive/html/bug-bison/2012-11/msg00023.html With help from Théophile Ranquet. * data/yacc.c (b4_declare_scanner_communication_variables): Be sure to initialize yylloc, even when its structure is unknown. (yyparse): Simplify the call to b4_dollar_pushdef. * tests/actions.at (Initial location): Check of similar pattern as in the case of PostgreSQL. 2012-11-23 Akim Demaille scanner: issue a single error for groups of invalid characters * src/scan-gram.l: Scan groups of invalid characters together. * tests/input.at, tests/named-refs.at: Adjust. 2012-11-23 Akim Demaille tests: formatting changes * tests/named-refs.at: Here. 2012-11-23 Akim Demaille doc: one of the fixes for an ambiguous grammar was ambiguous too Reported by Аскар Сафин. http://lists.gnu.org/archive/html/bug-bison/2012-11/msg00024.html * doc/bison.texi (Reduce/Reduce): Fix the resulting ambiguity using precedence/associativity directives. 2012-11-22 Akim Demaille doc: fix the dangling else with precedence directives * doc/bison.texi (Non Operators): New node. (Shift/Reduce): Point to it. Don't promote "%expect n" too much. 2012-11-22 Akim Demaille doc: prefer "token" to TOKEN This is more readable in short examples. * doc/bison.texi (Shift/Reduce): here. Make "win" and "lose" action more alike. 2012-11-22 Akim Demaille doc: formatting changes * doc/bison.texi: Use @group. 2012-11-14 Akim Demaille scanner: use explicit "ignore" statements * src/scan-gram.l: here. 2012-11-13 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: close files in glr-regression xml: match DOT output and xml2dot.xsl processing xml: factor xslt space template graph: fix a memory leak xml: documentation output: capitalize State 2012-11-12 Theophile Ranquet tests: close files in glr-regression * tests/glr-regression.at: Here. 2012-11-12 Theophile Ranquet xml: match DOT output and xml2dot.xsl processing Make the DOT produced by XSLT processing equivalent to the one made with the --graph option. * data/xslt/xml2dot.xsl: Stylistic changes, and add support for reductions. * doc/bison.texi (Xml): Update. * src/graphviz.c (conclude_red): Minor stylistic changes to DOT internals. (output_red): Swap enabled and disabled reductions output, for coherence with XSLT output. * src/print_graph.c (print_core): Minor stylistic change to States' output. (print_actions): Swap order of output for reductions and transitions. * tests/local.at (AT_BISON_CHECK_XML): Ignore differences in order. * tests/output.at: Adjust to changes in DOT internals. 2012-11-12 Theophile Ranquet xml: factor xslt space template * data/xslt/bison.xsl (space): New, import from... * data/xslt/xml2text.xsl: Here. 2012-11-12 Theophile Ranquet graph: fix a memory leak * src/graphviz.c (output_red): Here. 2012-11-12 Theophile Ranquet xml: documentation The XML output combined with the XSL Transformations provided in data/ are incredibly useful, they should be documented. * doc/bison.texi (Xml): New node. 2012-11-12 Theophile Ranquet output: capitalize State * src/print.c (print_state): Here. * tests/conflicts.at, tests/existing.at, tests/local.at, tests/reduce.at, tests/regression.at, tests/sets.at: Adjust. 2012-11-12 Akim Demaille tests: fix syntax-check errors Reported by Théophile Ranquet. * tests/c++.at: Use AT_PARSER_CHECK. Avoid using "strcmp", which triggers an error from syntax-check. 2012-11-12 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: address syntax-check errors. tests: use valgrind where appropriate tests: use valgrind where appropriate tests: don't expect $EGREP to support -w tests: more possible error compiler messages for "#error" 2012-11-12 Akim Demaille maint: address syntax-check errors. * cfg.mk: Ignore the "error" call in tests/c++.at, it is not to be translated. * doc/bison.texi: Fix incorrect @pxref use. * po/POTFILES.in: Add missing file. * src/print_graph.c: Remove useless include. 2012-11-12 Akim Demaille tests: use valgrind where appropriate Reported by Théophile Ranquet. * cfg.mk (sc_at_parser_check): New. * tests/c++.at: Fix use of AT_CHECK vs. AT_PARSER_CHECK. 2012-11-12 Akim Demaille Merge remote-tracking branch 'origin/branch-2.6' into maint * origin/branch-2.6: tests: use valgrind where appropriate tests: don't expect $EGREP to support -w 2012-11-10 Akim Demaille tests: use valgrind where appropriate Reported by Théophile Ranquet. * tests/glr-regression.at: Rewrite some test cases so that AT_PARSER_CHECK, which runs valgrind, is exposed with the parser, not with "echo". * tests/local.at, tests/regression.at, tests/headers.at: Use AT_PARSER_CHECK for generated parsers. 2012-11-08 Akim Demaille tests: don't expect $EGREP to support -w Does not work on Solaris 10. Reported by Dennis Clarke. http://lists.gnu.org/archive/html/bug-bison/2012-11/msg00009.html * tests/headers.at (Several parsers): Use Perl instead. While at it, run it only once, on all the generated headers. Adjust to YY_NULL be defined in position.hh. 2012-11-08 Akim Demaille tests: more possible error compiler messages for "#error" * tests/synclines.at (AT_SYNCLINES_COMPILE): Adjust for Clang. Verified with GCC 4.0, 4.2 to 4.8, and Clang 2.9, 3.2: none skip. 2012-11-08 Akim Demaille regen 2012-11-08 Akim Demaille Merge branch 'maint' * origin/maint: regen maint: post-release administrivia version 2.6.5 regen tests: syntax-check tests: beware of compilers that do not support POSIXLY_CORRECT gnulib: update 2012-11-08 Akim Demaille regen 2012-11-08 Akim Demaille Merge branch 'branch-2.6' into maint * origin/branch-2.6: maint: post-release administrivia version 2.6.5 regen tests: syntax-check tests: beware of compilers that do not support POSIXLY_CORRECT gnulib: update 2012-11-07 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-11-07 Akim Demaille version 2.6.5 * NEWS: Record release date. 2012-11-07 Akim Demaille regen 2012-11-07 Akim Demaille tests: syntax-check * tests/actions.at: Fix typo. 2012-11-07 Akim Demaille tests: beware of compilers that do not support POSIXLY_CORRECT Running "maintainer-release-check" on OS X with Clang 2.9 fails, because "clang-mp-2.9 -o test -g test.c" launches "/usr/bin/dsymutil test -o test.dSYM" which fails with "error: unable to open executable '-o'". * m4/c-working.m4 (BISON_CHECK_WITH_POSIXLY_CORRECT) (BISON_C_COMPILER_POSIXLY_CORRECT): New. * configure.ac: Use the latter. * tests/atlocal.in (POSIXLY_CORRECT_IS_EXPORTED): New. * tests/local.at (AT_BISON_CHECK_WARNINGS_): Use it instead of computing its value each time. (AT_QUELL_VALGRIND): Skip tests that cannot work because of compilers that do not support POSIXLY_CORRECT. 2012-11-07 Akim Demaille gnulib: update 2012-11-06 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: (24 commits) tests: calc: modernize the use of locations tests: remove useless location initializations lalr1.cc: always initialize yylval. tests: check that C and C++ objects can be linked together. yacc.c: also disable -Wuninitialized. glr.cc, yacc.c: initialize yylloc properly yacc.c, glr.c: a better YY_LOCATION_PRINT yacc.c: simplify initialization doc: formatting changes c++: fix position operator signatures tests: remove useless location initialization. tests: fix locations in C tests: handle %parse-param in the generated yyerror tests: simplifications grammars: fix display of nul character in error message tests: sort tests: cosmetic changes comment changes autoconf: update gnulib: update ... 2012-11-06 Akim Demaille Merge branch 'branch-2.6' into maint * origin/branch-2.6: (24 commits) tests: calc: modernize the use of locations tests: remove useless location initializations lalr1.cc: always initialize yylval. tests: check that C and C++ objects can be linked together. yacc.c: also disable -Wuninitialized. glr.cc, yacc.c: initialize yylloc properly yacc.c, glr.c: a better YY_LOCATION_PRINT yacc.c: simplify initialization doc: formatting changes c++: fix position operator signatures tests: remove useless location initialization. tests: fix locations in C tests: handle %parse-param in the generated yyerror tests: simplifications grammars: fix display of nul character in error message tests: sort tests: cosmetic changes comment changes autoconf: update gnulib: update ... 2012-11-06 Akim Demaille tests: calc: modernize the use of locations * tests/calc.at: Don't initialize the location, let the parser do it. Use a $printer. Change some testing input to be easier to distinguish (instead of always "0 0" for instance). 2012-11-06 Akim Demaille tests: remove useless location initializations * tests/actions.at, tests/calc.at: here. 2012-11-06 Akim Demaille lalr1.cc: always initialize yylval. * data/lalr1.cc: here. 2012-11-06 Akim Demaille tests: check that C and C++ objects can be linked together. * tests/local.at (AT_SKIP_IF_CANNOT_LINK_C_AND_CXX): New. * tests/headers.at (Several parsers): Use it. 2012-11-06 Akim Demaille yacc.c: also disable -Wuninitialized. * data/yacc.c (YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN): For some versions of GCC, -Wmaybe-uninitialized alone does not suffice. 2012-11-06 Akim Demaille glr.cc, yacc.c: initialize yylloc properly There are several issues to address here. One is that yylloc should be initialized when possible. Another is that the push parser needs to update yypushed_loc when the user modified it. And if the parser starts by a reduction of an empty, it uses the first location on the stack, which, therefore, must also be initialized to this initial location. This is getting complex, especially since because initializing a global (impure interface) is different from initializing a local variable. To simplify, the local yylloc is not initialized during its definition. * data/c.m4 (b4_yyloc_default_define): Replace by... (b4_yyloc_default): this. Adjust dependencies. * data/glr.cc: Initialize yylloc. * data/yacc.c (b4_declare_scanner_communication_variables): Initialize yylloc during its definition. Don't define yyloc_default. (yypush_parse): The location formal is not const, as we might initialize it. (yyparse): Define yyloc_default. Use it before running the user initial action. Possibly update the first location on the stack, and the pushed location after the user initial action. * tests/actions.at (Initial locations): Check that the initial location is correct. 2012-11-06 Akim Demaille yacc.c, glr.c: a better YY_LOCATION_PRINT * data/c.m4 (b4_yy_location_print_define): New. Now issues "short" locations, e.g., "1.1" instead of "1.1-1.1". Was initially a function, but then we face "static but unused" warnings. Simpler as a macro. * tests/local.at, data/glr.c, data/yacc.c: Use it instead of duplicating. * tests/actions.at: Adjust expectations. 2012-11-06 Akim Demaille yacc.c: simplify initialization * data/yacc.c: Fuse the initializations of yyssp, yyss and the like. Remove an obsolete comment: we do initialize these initial stack members (in some cases). 2012-11-05 Akim Demaille doc: formatting changes * doc/bison.texi: In a pointer type. 2012-11-05 Akim Demaille c++: fix position operator signatures * data/location.cc (operator+=, operator-=): Remove const from return type. 2012-11-05 Akim Demaille tests: remove useless location initialization. * tests/glr-regression.at: here. glr.c does initialize yylloc. 2012-11-05 Akim Demaille tests: fix locations in C * tests/local.at (AT_YYERROR_DEFINE): Don't display the end of the location if it is not after its beginning. * tests/actions.at, tests/cxx-type.at: Adjust the expected output. 2012-11-05 Akim Demaille tests: handle %parse-param in the generated yyerror * tests/local.at (AT_PARSE_PARAMS): New. (AT_YYERROR_FORMALS, AT_YYERROR_DEFINE): Use it to add the parse-param to yyerror. * tests/calc.at, tests/regression.at: Use AT_YYERROR_DEFINE and AT_YYERROR_DECLARE, now that they handle properly the parse-params. Be sure to let AT_BISON_OPTION_PUSHDEFS now what parse-params are used. 2012-11-05 Akim Demaille tests: simplifications * tests/actions.at (Exotic Dollars): Formatting changes. Use AT_FULL_COMPILE. (AT_CHECK_PRINTER_AND_DESTRUCTOR): Remove useless initialization of @$. 2012-11-01 Akim Demaille lalr1.cc: rename lex_symbol as api.token.constructor * data/bison.m4 (b4_lex_symbol_if): Rename as... (b4_token_ctor_if): this. Depend upon api.token.constructor. * data/c++.m4, data/lalr1.cc: Adjust. * doc/bison.texi: Fix all the occurrences of lex_symbol. * etc/bench.pl.in: Adjust. * examples/variant.yy: Likewise. * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Handle AT_TOKEN_CTOR_IF. * tests/c++.at: Adjust to using api.token.constructor and AT_TOKEN_CTOR_IF. Simplify the test of both build call styles. (AT_CHECK_VARIANTS): Rename as... (AT_TEST): this. And undef when done. 2012-11-01 Akim Demaille examples: simplify/improve * examples/variant.yy: Put yylex in yy::, and simplify accordingly. Minor formatting changes. 2012-11-01 Akim Demaille bison.m4: support b4_*_if macros whose name differ from their variable * data/bison.m4 (b4_percent_define_if_define_, b4_percent_define_if_define): Accept a second argument. 2012-11-01 Akim Demaille grammars: fix display of nul character in error message Reported by Marc Mendiola. http://lists.gnu.org/archive/html/help-bison/2012-10/msg00017.html * gnulib: Update to get quote_mem. * src/scan-gram.l: Use it. * tests/input.at (Invalid inputs): Additional checks. * tests/named-refs.at: Likewise. 2012-11-01 Akim Demaille tests: sort * tests/regression.at (Invalid inputs, Invalid inputs with {}): Move to... * tests/input.at: here, for consistency. 2012-11-01 Akim Demaille tests: cosmetic changes * tests/actions.at (AT_CHECK_PRINTER_AND_DESTRUCTOR): Improve the displayed title. 2012-11-01 Akim Demaille comment changes * data/lalr1.cc: here. 2012-11-01 Akim Demaille autoconf: update There are comment changes only in the files we use. 2012-11-01 Akim Demaille gnulib: update 2012-10-28 Akim Demaille regen 2012-10-28 Akim Demaille yacc.c: initialize yylval and yylloc. When generating a pure push parser, the initialization of yylval and yylloc may not be visible to the compiler. With warnings enabled, GCC 4.3.6, 4.4.7, 4.5.4, and 4.6.3 report uninitialized uses of yylval/yylloc. Using local pragmas to disable these warnings is not supported before 4.6, and 4.6 does not support it properly. So initialize yylval and yylloc at their definition. Reported by Peter Simons. See http://lists.gnu.org/archive/html/bison-patches/2012-10/msg00133.html * data/c.m4 (b4_yyloc_default_define): New. * data/yacc.c: Use it when locations are requested. (YYLVAL_INITIALIZE): Replace by... (YY_INITIAL_VALUE): this. (yyparse): Initialize yylloc and yylval. Therefore, remove the initialization of yylloc's field. * data/glr.c: Likewise. 2012-10-26 Theophile Ranquet graphs: fix spacing refactoring * src/print_graph.c (print_lhs, print_core): Here. 2012-10-26 Theophile Ranquet tests: make deprecation tests more specific * tests/input.at (Deprecated directives): Here, don't generate unrelated errors or warnings. 2012-10-26 Theophile Ranquet tests: fix AT_BISON_CHECK_WARNINGS_ stderr rewriting * tests/input.at (Deprecated directives): Avoid spurious error. * tests/locat.at (AT_BISON_CHECK_WARNINGS): Adjust for recent changes. 2012-10-26 Theophile Ranquet scan-skel.l: consider m4 notes as related to "complaint" errors * src/scan-skel.l (flag): Here. 2012-10-26 Theophile Ranquet warnings: distinguish context information based on warning type * src/scan-code.l (show_sub_message, show_sub_messages): Take a new warnings argument. 2012-10-26 Theophile Ranquet warnings: fix early exit of warnings treated as errors Treating warnings as errors caused Bison to exit earlier than needed, making it hide warnings that would have been printed had -Werror not been set. Also, fix a bug that caused some context information of errors to not be shown. * src/complain.c (complaint_issued): Rename as... (complaint_status): This, and change its type from boolean to * src/complain.h (err_status): This, new enumeration. * src/main.c (main): Adjust (only finish early if an actual complaint was risen, not a mere warning treated an error). * src/reader.c: Adjust. 2012-10-26 Theophile Ranquet tests: reindent for legibility * tests/local.at (AT_BISON_CHECK_WARNINGS_): Here. 2012-10-26 Akim Demaille build: fix Texinfo compilation * doc/local.mk: fix dependencies. 2012-10-26 Akim Demaille regen 2012-10-26 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: (46 commits) doc: minor style change maint: use gendocs's new -I option regen yacc.c: do not define location support when not using locations maint: be compilable with GCC 4.0 tests: address a warning from GCC 4.4 tests: don't use options that Clang does not support tests: restore the tests on -Werror regen parse-gram: update the Bison interface fix comment maint: post-release administrivia version 2.6.4 regen 2.6.4: botched 2.6.3 maint: post-release administrivia version 2.6.3 gnulib: update tests: check %no-lines NEWS: warnings with clang ... 2012-10-26 Akim Demaille Merge branch 'branch-2.6' into maint * origin/branch-2.6: regen yacc.c: do not define location support when not using locations maint: be compilable with GCC 4.0 tests: address a warning from GCC 4.4 tests: don't use options that Clang does not support tests: restore the tests on -Werror regen parse-gram: update the Bison interface fix comment 2012-10-26 Akim Demaille doc: minor style change * doc/figs/example-reduce.txt: here. 2012-10-26 Akim Demaille maint: use gendocs's new -I option * gnulib: Update gendocs. * cfg.mk (gendocs_options_): New. 2012-10-26 Akim Demaille regen 2012-10-26 Akim Demaille yacc.c: don't use _Pragma GCC diagnostic with 4.6 Reported by Peter Simons. http://lists.gnu.org/archive/html/bug-bison/2012-10/msg00033.html * data/yacc.c (b4_declare_scanner_communication_variables): 4.7 seems fine though. 2012-10-26 Akim Demaille regen 2012-10-26 Akim Demaille yacc.c: do not define location support when not using locations * data/yacc.c (YYLLOC_DEFAULT, YYRHSLOC): Don't define when not using locations. 2012-10-26 Akim Demaille maint: be compilable with GCC 4.0 The "shadows a global declaration" warning in GCC 4.0 was a bit annoying. It does not like that a type name be used in a prototype of a function (not the implementation, just the declaration): In file included from src/LR0.c:38: src/reader.h:56: warning: declaration of 'named_ref' shadows a global declaration src/named-ref.h:35: warning: shadowed declaration is here It does not like either when a global variable name is used in a prototype. Flex 2.5.37 generates this prototype: void gram_set_debug (int debug_flag ); * src/getargs.h, src/getargs.c (debug_flag): Rename as... (debug): this. Adjust dependencies. * src/reader.h: Don't use "named_ref" as a formal argument name. 2012-10-26 Theophile Ranquet misc: document TESTSUITEFLAGS in README-hacking * README-hacking: Document -j and -k flags. 2012-10-26 Theophile Ranquet deprecation: add tests * tests/input.at (Deprecated directives warn, Non-deprecated directives don't, Unput doesn't mess up locations): New tests. 2012-10-25 Akim Demaille tests: address a warning from GCC 4.4 236. torture.at:465: testing Exploding the Stack Size with Alloca ... ../../../tests/torture.at:474: bison -o input.c input.y ../../../tests/torture.at:474: $CC $CFLAGS $CPPFLAGS $LDFLAGS -o input input.c $LIBS stderr: cc1: warnings being treated as errors input.y: In function 'main': input.y:60: error: 'status' may be used uninitialized in this function * tests/torture.at (AT_DATA_STACK_TORTURE): Initial status to avoid the previous error. 2012-10-25 Akim Demaille tests: don't use options that Clang does not support * configure.ac (WARN_CFLAGS, WARN_CXXFLAGS): Do not include options that Clang does not support. 2012-10-25 Akim Demaille tests: restore the tests on -Werror When run as /bin/sh, Bash sets the shell variable POSIXLY_CORRECT to y. The test suite checks for the envvar POSIXLY_CORRECT to turn of some tests not supported in POSIX mode. Restore these tests. Reported by the Hydra build farm, from Rob Vermaas. * tests/local.at (AT_BISON_CHECK_WARNINGS_): Check the envvar POSIXLY_CORRECT, not the shell variable. 2012-10-25 Akim Demaille regen 2012-10-25 Akim Demaille parse-gram: update the Bison interface * src/parse-gram.y (%pure-parser, %name-prefix): Replace with... (%define api.pure, %define api.prefix) * src/location.h, src/scan-gram.h: Adjust to api.prefix. 2012-10-25 Akim Demaille fix comment * data/c.m4 (b4_YYDEBUG_define): here. 2012-10-24 Theophile Ranquet regen 2012-10-24 Theophile Ranquet deprecation: issue warnings in scanner * src/parse-gram.y: Move the handling of (three) deprecated constructs ... * src/scan-gram.l: ...Here, and issue warnings. (DEPRECATED): New. 2012-10-23 Akim Demaille Merge branch 'branch-2.6' into maint * origin/branch-2.6: maint: post-release administrivia version 2.6.4 regen 2.6.4: botched 2.6.3 2012-10-23 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-10-23 Akim Demaille version 2.6.4 * NEWS: Record release date. 2012-10-22 Akim Demaille regen 2012-10-22 Akim Demaille 2.6.4: botched 2.6.3 * NEWS: here. 2012-10-22 Akim Demaille Merge branch '2.6.3' into maint * 2.6.3: (22 commits) maint: post-release administrivia version 2.6.3 gnulib: update tests: check %no-lines NEWS: warnings with clang warnings: avoid warnings from clang tests: no longer disable -O compiler options yacc.c: initialize yylval in pure-parser mode skeletons: style changes tests: minor improvements tests: use $PERL instead of perl build: look for Perl in configure. tests: fix sed portability issues tests: diff -u is not portable maint: word changes lalr1.cc: fix test suite portability maint: fix an erroneous include tests: check that headers are self contained doc: add missing documentation for --report headers: move CPP guards into YY_*_INCLUDED to avoid collisions ... 2012-10-22 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-10-22 Akim Demaille version 2.6.3 * NEWS: Record release date. 2012-10-22 Akim Demaille gnulib: update 2012-10-22 Akim Demaille tests: check %no-lines * tests/synclines.at: here. 2012-10-22 Akim Demaille NEWS: warnings with clang * NEWS: here. 2012-10-22 Akim Demaille warnings: avoid warnings from clang Fix the following warning parse-gram.c:2078:14: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality] if (((yyn) == (-91))) ~~~~~~^~~~~~~~ parse-gram.c:2078:14: note: remove extraneous parentheses around the comparison to silence this warning if (((yyn) == (-91))) ~ ^ ~ parse-gram.c:2078:14: note: use '=' to turn this equality comparison into an assignment if (((yyn) == (-91))) ^~ = 1 error generated. and the following one: input.cc:740:1: error: function declared 'noreturn' should not return [-Werror,-Winvalid-noreturn] static void yyMemoryExhausted (yyGLRStack* yystackp) __attribute__ ((__noreturn__)); static void yyMemoryExhausted (yyGLRStack* yystackp) { YYLONGJMP (yystackp->yyexception_buffer, 2); } ^ 1 warning and 1 error generated. This is Apple clang version 3.1 (tags/Apple/clang-318.0.61). * data/c.m4 (b4_table_value_equals): Use (!!(A == B)) instead of (A == B) to avoid this warning. Any reasonable compiler should generate the same code. * src/uniqstr.h (UNIQSTR_EQ): Likewise. * data/glr.c (LONGJMP): abort after longjmp to pacify clang. 2012-10-22 Akim Demaille tests: no longer disable -O compiler options Tests are running without -O since f377f69fec28013c79db4efe12bbb9d48987fb2c because some warnings (about yylval not being initialized) show only when GCC is given -O2. The previous patch fixes the warnings. Run the test suite with compiler options unmodified. * tests/atlocal.in (O0CFLAGS, O0CXXFLAGS): Remove, use CFLAGS and CXXFLAGS. 2012-10-22 Paul Eggert yacc.c: initialize yylval in pure-parser mode See http://lists.gnu.org/archive/html/bison-patches/2012-08/msg00024.html (spreading over September and October). * data/yacc.c (YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN) (YY_IGNORE_MAYBE_UNINITIALIZED_END, YYLVAL_INITIALIZE): New macros. Use them to suppress an unwanted GCC diagnostic. 2012-10-22 Akim Demaille skeletons: style changes * data/yacc.c, data/glr.c: Prefer Title case for (CPP) macro arguments. 2012-10-22 Akim Demaille tests: minor improvements * tests/c++.at: Space changes. Use AT_YYERROR_DEFINE. * tests/local.at (AT_YYERROR_DEFINE): Issue errors on unknown languages. 2012-10-22 Akim Demaille tests: use $PERL instead of perl * tests/atlocal.in (PERL): New. Sort. * tests/calc.at, tests/input.at, tests/local.at, tests/regression.at, * tests/skeletons.at, tests/synclines.at, tests/torture.at: here. 2012-10-22 Akim Demaille build: look for Perl in configure. Bison uses "/usr/bin/perl" or "perl" in several places, and it does not appear to be a problem. But, at least to make it simpler to change PERL on the make command line, check for perl in configure. * configure.ac (PERL): New. * doc/Doxyfile.in, doc/Makefile.am, tests/bison.in: Use it. 2012-10-22 Akim Demaille tests: fix sed portability issues Reported by Didier Godefroy, . * tests/calc.at (AT_CHECK_SPACES): Use Perl. 2012-10-22 Akim Demaille tests: diff -u is not portable Reported by Didier Godefroy . * tests/existing.at (AT_LALR1_DIFF_CHECK): Skip if diff -u does not work. 2012-10-22 Akim Demaille maint: word changes * README-hacking (Typical errors): Improve wording. 2012-10-22 Akim Demaille lalr1.cc: fix test suite portability Reported by Rob Vermaas' Hydra build farm on x86_64-darwin 10.2.0 with G++ 4.6.3. * tests/headers.at (Several parsers): Include AT_DATA_SOURCE_PROLOGUE in the files to compile. * data/location.cc: Do not include twice string and iostream (once by position.hh, and then by location.hh). * README-hacking (Typical errors): Some hints for other maintainers. 2012-10-22 Theophile Ranquet maint: fix an erroneous include This fixes test 130 (Several parsers). * data/location.cc: Include rather than since we really need << on strings for instance. * NEWS: Document this. 2012-10-22 Akim Demaille tests: check that headers are self contained Reported by Alexandre Duret-Lutz. * tests/headers.at (Several parsers): here. 2012-10-22 Akim Demaille doc: add missing documentation for --report * doc/bison.texi (Bison Options): Document --report's "solved", "all", and "none". 2012-10-22 Akim Demaille headers: move CPP guards into YY_*_INCLUDED to avoid collisions See . * data/c.m4 (b4_cpp_guard): Prepend YY_ and append _INCLUDED. * tests/headers.at: Adjust. * NEWS, doc/bison.texi: Document. 2012-10-22 Akim Demaille minor changes. * NEWS: Word changes. * doc/bison.texi: Spell check. Fix minor issues. * tests/headers.at: Comment and formatting changes. 2012-10-22 Akim Demaille gnulib: update 2012-10-19 Akim Demaille gnulib: update 2012-10-19 Akim Demaille xml: slight improvement of the DOT output This was completely forgotten... Nothing about XML is actually documented... * data/xslt/xml2dot.xsl: Use boxes, and Courier font. 2012-10-19 Akim Demaille maint: check for dot before using it * configure.ac: here. * doc/Makefile.am: Use $(DOT). Ship the generated files, to spare the user the need for Graphviz. 2012-10-18 Theophile Ranquet graphs: documentation Note that 'make web-manual' fails. * NEWS: Document these changes. * doc/Makefile.am: Adjust to generate example files. * doc/bison.texi: Add a Graphviz section after "Understanding::", the section describing the .output file, because these are similar. * doc/figs/example-reduce.dot, doc/figs/example-reduce.txt, doc/figs/example-shift.dot, doc/figs/example-shift.txt: New, minimal examples to illustrate the documentation. 2012-10-18 Theophile Ranquet graphs: add tests, introducing -k graph * tests/output.at (AT_TEST): New. Use it to add 6 --graph tests. 2012-10-18 Theophile Ranquet graphs: change the output format of the rules Use something similar to the report file. * src/print_graph.c (print_lhs): New, obstack equivalent of rule_lhs_print. (print_core): Use here. 2012-10-18 Theophile Ranquet graphs: style changes * src/graphviz.c (start_graph): Use courier font. (conclude_red): Use commas to separate attributes. Show the acceptation as a special reduction, with a blue color and an "Acc" label. Show the lookahead tokens between square brackets. (output_red): No longer label default reductions. * src/print_graph.c (print_core): Refactor spacing, and print an additional space between a rule's rhs and its lookahead tokens. Also, capitalize "State". (print_actions): Style, move a declaration. 2012-10-18 Theophile Ranquet graphs: address an issue with R/R conflicts All disabled reductions should now be shown as such. * src/graphviz.c (output_red): Here. (conclude_red): New. 2012-10-16 Akim Demaille news: spell check * NEWS: here. 2012-10-16 Akim Demaille Merge branch 'maint' * origin/maint: java: use api.location.type and api.position.type 2012-10-16 Akim Demaille variables: use singular in %define variable names See http://lists.gnu.org/archive/html/bison-patches/2012-02/msg00045.html * doc/bison.texi, src/lalr.c, src/main.c, src/muscle-tab.c, * src/print.c, src/reader.c, src/tables.c, tests/conflicts.at, * tests/input.at, tests/reduce.at: s/lr.default-reductions/lr.default-reduction/ s/lr.keep-unreachable-states/lr.keep-unreachable-state/. * NEWS: Document. 2012-10-16 Akim Demaille java: fixes * data/java.m4: Remove stray M4 characters. 2012-10-16 Akim Demaille api.tokens.prefix -> api.token.prefix See http://lists.gnu.org/archive/html/bison-patches/2012-02/msg00045.html Note that api.tokens.prefix has not been released, yet. * NEWS, data/bison.m4, doc/bison.texi, tests/c++.at, * tests/calc.at, tests/java.at, tests/local.at: Do it. * src/muscle-tab.c (muscle_percent_variable_update): Ensure backward compatibility. 2012-10-15 Theophile Ranquet scan-skel.l: shift complain_args arguments Because argv[0] is never used, shift it out from the argument list. * src/complain.c (complain_args): Here. * src/scan-skel.l (at_complain): Adjust argv and argc. 2012-10-15 Theophile Ranquet scan-skel.l: formatting changes * src/scan-skel.l (fail_for_at_directive_too_few_args): Here. 2012-10-12 Akim Demaille java: use api.location.type and api.position.type * data/java.m4: here. * NEWS, doc/bison.texi, tests/java.at: Adjust. 2012-10-12 Akim Demaille Merge branch 'maint' * origin/maint: tests: check %no-lines tests: minor simplification graphs: stylistic changes. graphs: minor style changes graphs: show reductions graphs: style: prefix state number with "state" graphs: style: use left justification for states graphs: style: prefix rules and change shapes obstack: import obstack_finish0 from master c++: api.location.type muscles: a function for backward compatibility maint: more macros 2012-10-12 Akim Demaille tests: check %no-lines * tests/synclines.at: here. 2012-10-12 Akim Demaille tests: minor simplification * tests/headers.at (Several parsers): Use *.y even for C++. 2012-10-11 Akim Demaille graphs: stylistic changes. * src/graphviz.c (output_red): Comment and formatting changes. 2012-10-11 Theophile Ranquet graphs: minor style changes * src/graphviz.c (output_red): Fix C90 issues. Reduce variable scopes. 2012-10-11 Theophile Ranquet graphs: show reductions * src/graphviz.c (output_red): New, show reductions on the graph. (no_reduce_bitset_init): New, initialize a bitset. (print_token): New, print a lookahead token. (escape): New, print "foo" as \"foo\" because Dot doesn't like quotes within a label. * src/graphviz.h : Adjust. * src/print_graph.c (print_actions): Call output_red here. 2012-10-11 Theophile Ranquet graphs: style: prefix state number with "state" * src/print_graph.c (print_core): Here. 2012-10-11 Theophile Ranquet graphs: style: use left justification for states The label text of nodes is centered "by default" (by the use of '\n' as a line feed). This gives bad readability to the grammar rules shown in state nodes, a left justification is much nicer. This is done by using '\l' as the line feed. In order to allow \l in the DOT file, changes to the quoting system seem necessary. * src/print_graph.c (print_core): Escape tokens here, instead of... * src/graphviz.c (output_node): Here... (escape): Using this, new. 2012-10-11 Theophile Ranquet graphs: style: prefix rules and change shapes * src/graphviz.c (start_graph): Use box rather than ellipsis. * src/print_graph.c (print_core): Prefix rules with their number. 2012-10-11 Theophile Ranquet obstack: import obstack_finish0 from master * src/system.h (obstack_finish0): New. 2012-10-11 Akim Demaille Merge branch 'maint' * origin/maint: NEWS: warnings with clang warnings: avoid warnings from clang tests: no longer disable -O compiler options yacc.c: initialize yylval in pure-parser mode skeletons: style changes lalr1.cc: document exception safety lalr1.cc: check exception safety of error handling lalr1.cc: check (and fix) %printer exception safety lalr1.cc: check (and fix) %initial-action exception safety lalr1.cc: fix exception safety lalr1.cc: check exception safety. lalr1.cc: indentation fixes. lalr1.cc: don't leave macros define to nothing tests: minor improvements tests: use $PERL instead of perl build: look for Perl in configure. tests: fix sed portability issues tests: diff -u is not portable 2012-10-09 Akim Demaille c++: api.location.type This feature was introduced in 95a2de5695670ae0df98cb3c42141cad549f0204 (which is part of 2.5), but not documented. Give it a proper name, and make it public. * data/c++.m4, data/lalr1.cc, data/glr.cc, data/java.m4: Use api.location.type instead of location_type. * src/muscle-tab.c (muscle_percent_variable_update): Map the latter to the former. * tests/local.at: Adjust. * tests/calc.at: Use api.location.type. Leave tests/java.at with location_type, at least for the time being, to cover both names. * doc/bison.texi: Document api.location.type. (User Defined Location Type): New. * NEWS: Update. 2012-10-09 Akim Demaille muscles: a function for backward compatibility Based on commit 171ad99d6421935a278656be6dc7161591835d00 from master. * src/muscle-tab.c (muscle_percent_variable_update): New. (muscle_percent_define_insert): Use it. Define the variables with their initial value. 2012-10-09 Akim Demaille maint: more macros * src/output.c (ARRAY_CARDINALITY): Move to... * src/system.h: here. (STREQ, STRNEQ): new. 2012-10-08 Akim Demaille NEWS: warnings with clang * NEWS: here. 2012-10-08 Akim Demaille warnings: avoid warnings from clang Fix the following warning parse-gram.c:2078:14: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality] if (((yyn) == (-91))) ~~~~~~^~~~~~~~ parse-gram.c:2078:14: note: remove extraneous parentheses around the comparison to silence this warning if (((yyn) == (-91))) ~ ^ ~ parse-gram.c:2078:14: note: use '=' to turn this equality comparison into an assignment if (((yyn) == (-91))) ^~ = 1 error generated. and the following one: input.cc:740:1: error: function declared 'noreturn' should not return [-Werror,-Winvalid-noreturn] static void yyMemoryExhausted (yyGLRStack* yystackp) __attribute__ ((__noreturn__)); static void yyMemoryExhausted (yyGLRStack* yystackp) { YYLONGJMP (yystackp->yyexception_buffer, 2); } ^ 1 warning and 1 error generated. This is Apple clang version 3.1 (tags/Apple/clang-318.0.61). * data/c.m4 (b4_table_value_equals): Use (!!(A == B)) instead of (A == B) to avoid this warning. Any reasonable compiler should generate the same code. * src/uniqstr.h (UNIQSTR_EQ): Likewise. * data/glr.c (LONGJMP): abort after longjmp to pacify clang. 2012-10-08 Akim Demaille tests: no longer disable -O compiler options Tests are running without -O since f377f69fec28013c79db4efe12bbb9d48987fb2c because some warnings (about yylval not being initialized) show only when GCC is given -O2. The previous patch fixes the warnings. Run the test suite with compiler options unmodified. * tests/atlocal.in (O0CFLAGS, O0CXXFLAGS): Remove, use CFLAGS and CXXFLAGS. 2012-10-08 Paul Eggert yacc.c: initialize yylval in pure-parser mode See http://lists.gnu.org/archive/html/bison-patches/2012-08/msg00024.html (spreading over September and October). * data/yacc.c (YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN) (YY_IGNORE_MAYBE_UNINITIALIZED_END, YYLVAL_INITIALIZE): New macros. Use them to suppress an unwanted GCC diagnostic. 2012-10-08 Akim Demaille skeletons: style changes * data/yacc.c, data/glr.c: Prefer Title case for (CPP) macro arguments. 2012-10-06 Akim Demaille lalr1.cc: document exception safety * NEWS: here. * doc/bison.texi (Destructor Decl, C++ Parser Interface): and there. 2012-10-06 Akim Demaille lalr1.cc: check exception safety of error handling * tests/c++.at (Exception safety): Don't use swap here, it is useless. Cover more test cases: yyerror, YYERROR, YYABORT, and error recovery. (Object): Instead of just keeping a counter of instances, keep a list of them. 2012-10-06 Akim Demaille lalr1.cc: check (and fix) %printer exception safety * tests/c++.at (Exception safety): Let the parser support the --debug option. On 'p', throw an exception from the %printer. * data/lalr1.cc (yyparse): Do not display the values we discard, as it uses %printer, which might have thrown the exception. 2012-10-06 Akim Demaille lalr1.cc: check (and fix) %initial-action exception safety * data/lalr1.cc: Check size > 1, rather than size != 1, when cleaning the stack, as at the beginning, size is 0. * tests/c++.at (Exception safety): Check exception safety in %initial-action. 2012-10-06 Akim Demaille lalr1.cc: fix exception safety lalr1.cc does not reclaim its memory when ended by an exception. Reported by Oleksii Taran: http://lists.gnu.org/archive/html/help-bison/2012-09/msg00000.html * data/lalr1.cc (yyparse): Protect the whole yyparse by a try-catch block that cleans the stack and the lookahead. 2012-10-06 Akim Demaille lalr1.cc: check exception safety. * tests/c++.at (Exception safety): New. 2012-10-06 Akim Demaille lalr1.cc: indentation fixes. * data/lalr1.cc (yyparse): here. Untabify a block of code. 2012-10-06 Akim Demaille lalr1.cc: don't leave macros define to nothing * data/lalr1.cc (YY_SYMBOL_PRINT, YY_REDUCE_PRINT, YY_STACK_PRINT): Define to something so that, for instance, "if (foo) YY_SYMBOL_PRINT" is valid even when !YYDEBUG. 2012-10-06 Akim Demaille tests: minor improvements * tests/c++.at: Space changes. Use AT_YYERROR_DEFINE. * tests/local.at (AT_YYERROR_DEFINE): Issue errors on unknown languages. 2012-10-05 Akim Demaille tests: use $PERL instead of perl * tests/atlocal.in (PERL): New. Sort. * tests/calc.at, tests/input.at, tests/local.at, tests/regression.at, * tests/skeletons.at, tests/synclines.at, tests/torture.at: here. 2012-10-05 Akim Demaille build: look for Perl in configure. Bison uses "/usr/bin/perl" or "perl" in several places, and it does not appear to be a problem. But, at least to make it simpler to change PERL on the make command line, check for perl in configure. * configure.ac (PERL): New. * doc/Doxyfile.in, doc/Makefile.am, tests/bison.in: Use it. 2012-10-05 Akim Demaille tests: fix sed portability issues Reported by Didier Godefroy, . * tests/calc.at (AT_CHECK_SPACES): Use Perl. 2012-10-05 Akim Demaille tests: diff -u is not portable Reported by Didier Godefroy . * tests/existing.at (AT_LALR1_DIFF_CHECK): Skip if diff -u does not work. 2012-10-04 Akim Demaille Merge branch 'maint' * origin/maint: maint: word changes lalr1.cc: fix test suite portability maint: fix an erroneous include tests: check that headers are self contained doc: add missing documentation for --report 2012-10-04 Akim Demaille scan-skel: use the scanner to reject all invalid directives * src/scan-skel.l: Use a simpler and more consistent pattern escaping scheme. Catch all the invalid directives here by just removing the previous catch-all-but-alphabetical rule. 2012-10-04 Theophile Ranquet scan-skel: recognize the @directives directly in scanner * src/scan-skel.l (at_directive, at_init): New. (at_ptr): New, function pointer used to call the right at_directive function (at_basename, etc.). (outname): Rename as... (out_name): this, for consistency with out_lineno. 2012-10-04 Theophile Ranquet scan-skel: split @directive functions * src/scan-skel.l (at_directive_perform): Split as... (at_basename, at_complain, at_output): these. 2012-10-04 Theophile Ranquet errors: support indented context info in m4 macros * TODO: Address the issue, so remove it. * data/bison.m4: Use b4_error with [[note]] rather than a complain_at for context information. * src/complain.c (complain_args): Take an additional argument, an indentation pointer, to allow the dispatching of context information. * src/complain.h (complain_args): Adjust prototype. * src/scan-skel.l (at_directive_perform): Recognize the new @note mark. * tests/input.at: Adjust. 2012-10-04 Theophile Ranquet errors: factor b4_error @directives Instead of @complain, @warn, and @fatal, use a unique @complain directive. This directive's first argument is "complain", "warn", etc. * data/bison.m4 (m4_error): Here. * src/scan-skel.l (at_directive_perform): Adjust. (flag): Replace the switch by safer and more explicit if branches. 2012-10-04 Theophile Ranquet errors: pointerize complain_at_indent * src/complain.c (complain_at_indent): Rename as... (complaint_indent): This, and take the location as a pointer. * src/complain.h, src/muscle-tab.c, src/reader.c, src/scan-code.l, src/symtab.c: Adjust. 2012-10-04 Akim Demaille maint: word changes * README-hacking (Typical errors): Improve wording. 2012-10-04 Akim Demaille lalr1.cc: fix test suite portability Reported by Rob Vermaas' Hydra build farm on x86_64-darwin 10.2.0 with G++ 4.6.3. * tests/headers.at (Several parsers): Include AT_DATA_SOURCE_PROLOGUE in the files to compile. * data/location.cc: Do not include twice string and iostream (once by position.hh, and then by location.hh). * README-hacking (Typical errors): Some hints for other maintainers. 2012-10-03 Theophile Ranquet maint: fix an erroneous include This fixes test 130 (Several parsers). * data/location.cc: Include rather than since we really need << on strings for instance. * NEWS: Document this. 2012-10-03 Akim Demaille tests: check that headers are self contained Reported by Alexandre Duret-Lutz. * tests/headers.at (Several parsers): here. 2012-10-03 Akim Demaille doc: add missing documentation for --report * doc/bison.texi (Bison Options): Document --report's "solved", "all", and "none". 2012-10-01 Akim Demaille build: use gnulib's non-recursive-gnulib-prefix-hack Suggested by Jim Meyering. * etc/prefix-gnulib-mk: Remove, as it is now provided by... * bootstrap.conf (modules): the non-recursive-gnulib-prefix-hack module. * build-aux/.gitignore, configure.ac, m4/.gitignore: Adjust. 2012-10-01 Akim Demaille warnings: simplify the m4 interface * data/bison.m4 (error_at): Replace... (error): this. (b4_warn, b4_complain, b4_fatal): Bounce to their _at equivalent, with empty location. * src/scan-skel.l (at_directive_perform): Simplify accordingly. 2012-10-01 Theophile Ranquet warnings: separate flags_argmatch This function is now a mere iterator that calls flag_argmatch, a new function, that matches a single option parameter. * src/getargs.c (flag_argmatch): New, taken from... (flags_argmatch): Here. 2012-10-01 Theophile Ranquet warnings: refactoring The code here was too confusing, this seems more natural. * src/complain.c (error_message): Move the indentation check and the category output to complains. Also, no longer take a 'warnings' argument. (complains): Factor calls to error_message. 2012-10-01 Theophile Ranquet formatting changes * src/complain.c: Here. 2012-10-01 Theophile Ranquet warnings: organize variadic complaints call Move the dispatch of variadic complains to complain.c, rather than do it in a scanner. * src/complain.h, src/complain.c (complain_args): New. * src/scan-skel.l (at_directive_perform): Use it. 2012-10-01 Theophile Ranquet warnings: fusion of complain and complain_at These functions are very similar, and keeping them seperate makes future improvements difficult, so merge them. This impacts 89 calls. * src/bootstrap.conf: Adjust. * src/complain.c (complain, complain_at): Merge into... (complain): this. (complain_args): Adjust. * src/complain.h, src/conflicts.c, src/files.c, src/getargs.c, * src/gram.c, src/location.c, src/muscle-tab.c, src/parse-gram.y, * src/reader.c, src/reduce.c, src/scan-code.l, src/scan-gram.l, * src/scan-skel.l, src/symlist.c, src/symtab.c: Adjust. 2012-10-01 Theophile Ranquet warnings: remove spurious suffixes on context Rectify a bug that introduced suffixes out of place. * src/complainc.c (complains): Handle all three special warning bits. * src/scan-code.l (show_sub_message): Remove useless argument. * tests/named-refs.at: Adjust. 2012-10-01 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: headers: move CPP guards into YY_*_INCLUDED to avoid collisions minor changes. 2012-10-01 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: gnulib: update errors: indent "user token number redeclaration" context 2012-10-01 Akim Demaille headers: move CPP guards into YY_*_INCLUDED to avoid collisions See . * data/c.m4 (b4_cpp_guard): Prepend YY_ and append _INCLUDED. * tests/headers.at: Adjust. * NEWS, doc/bison.texi: Document. 2012-10-01 Akim Demaille minor changes. * NEWS: Word changes. * doc/bison.texi: Spell check. Fix minor issues. * tests/headers.at: Comment and formatting changes. 2012-09-28 Akim Demaille gnulib: update 2012-09-28 Theophile Ranquet errors: indent "user token number redeclaration" context This is the continuation of the work on the readability of errors context. * src/symtab.c (user_token_number_redeclaration): Use complain_at_indent to output with increased indentation level. * tests/input:at: Apply this change. 2012-09-27 Theophile Ranquet errors: don't display "warnings treated as errors" This line doesn't add any meaningful information anymore, the appended [-Werror=CATEGORY] is enough. It is actually more insightful, as it allows to distinguish warnings treated as errors from those that aren't. This line is also removed by gcc 4.8. * src/complain.c (set_warnings_issued): The only action left was checking if the error bit corresponding to the warning issued was set, and that function was only called once. Therefore, remove it, and do its job directly in the caller... (complains): here. * src/complains.h: Adjust. * tests/input.at: Adjust. * NEWS: Document this change. 2012-09-27 Akim Demaille errors: change output, and improve -y coherence The prefix of warnings treated as errors is now "error: ". Also, their suffix now reflects the changes in the Werror option format. An output for -Werror=other used to be: bison: warnings being treated as errors input.y:1.1: warning: stray ',' treated as white space [-Wother] It is now: bison: warnings being treated as errors input.y:1.1: error: stray ',' treated as white space [-Werror=other] The line "warnings being treated as errors" no longer adds any info, it will be removed in a forthcoming change. * NEWS: Add entry "Enhancement of the -Werror" * doc/bison.texi: Move the warnings-as-error to a new bullet. * src/complain.c (complains): Refactor, change the prefix of warnings that are treated as errors. (warnings_print_categories): Support for [-Werror=CATEGORY] display * src/getargc.c (getargs): -y implies -Werror=yacc * tests/input.at: Update expected --yacc output for coherence. 2012-09-27 Theophile Ranquet errors: introduce the -Werror=CATEGORY option This new option is a lot more flexible than the previous one. Its details will be discussed in the NEWS and info file, in a forthcoming change. If no category is specified (ie: used as simply "-Werror"), the functionality is the same as before. * src/complain.c (errors_flag): New variable. (set_warning_issued): Accept warning categories as an argument. * src/complain.h (Wall): Better definition. * src/getargs.c (flags_argmatch): Support for the new format. (usage): Update -Werror to -Werror[=CATEGORY] format. * src/complain.c (errors_flag): New variable. (set_warning_issued): Accept warning categories as an argument. * src/complain.h (Wall): Better definition. * src/getargs.c (flags_argmatch): Support for the new format. (usage): Update -Werror to -Werror=[CATEGORY] format. 2012-09-26 Akim Demaille Merge branch 'maint' * maint: warnings: introduce -Wdeprecated in the usage info errors: prefix the output with "error: " errors: indent "invalid value for %define" context errors: indent "%define var" redefinition context errors: indent "symbol redeclaration" context errors: indent "result type clash" error context 2012-09-26 Theophile Ranquet warnings: introduce -Wdeprecated in the usage info The deprecated warning, introduced some time ago, was not displayed in the usage message. This patch addresses the issue. * src/getargs.c (usage): Insert here. 2012-09-26 Akim Demaille regen 2012-09-26 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: regen yacc: fix handling of CPP guards when no header is generated gnulib: update 2012-09-26 Theophile Ranquet errors: prefix the output with "error: " This improves readability. This is also what gcc does. * NEWS: Document this change. * src/complain.c (complain_at): Prefix all errors with "error: ". (complain_at_indent, warn_at_indent): Do not prefix the context information of errors, which are basically just indented errors. * tests/conflicts.at, tests/glr-regression.at, tests/input.at, tests/named-refs.at, tests/output.at, tests/push.at, tests/regression.at, tests/skeletons.at: Apply this change. 2012-09-26 Theophile Ranquet errors: indent "invalid value for %define" context This is the continuation of the work on the readability of errors context. For example, what used to be: input.y:1.9-29: invalid value for %define variable 'foo' : 'bar' input.y:1.9-29: accepted value: 'most' is now: input.y:1.9-29: invalid value for %define variable 'foo' : 'bar' input.y:1.9-29: accepted value: 'most' * src/muscle-tab.c (muscle_percent_define_check_values): Use complain_at_indent to output with increased indentation level. * tests/input:at: Apply this change. 2012-09-26 Theophile Ranquet errors: indent "%define var" redefinition context This is the continuation of the work on the readability of errors context. For example, what used to be: input.y:2.9-11: %define variable 'var' redefined input.y:1.9-11: previous definition is now: input.y:2.9-11: %define variable 'var' redefined input.y:1.9-11: previous definition * src/muscle-tab.c (muscle_percent_define_insert): Use complain_at_indent to output with increased indentation level. * tests/input.at: Apply this change. 2012-09-26 Theophile Ranquet errors: indent "symbol redeclaration" context This is the continuation of the work on the readability of errors context. For example, what used to be: input.y:5.10-24: %printer redeclaration for input.y:3.11-25: previous declaration is now: input.y:5.10-24: %printer redeclaration for input.y:3.11-25: previous declaration * NEWS: Document this change. * src/symtab.c (symbol_redeclaration, semantic_type_redeclaration, user_token_number_redeclaration, default_tagged_destructor_set, default_tagless_destructor_set, default_tagged_printer_set, default_tagless_printer_set): Use complain_at_indent to output with increased indentation level. * tests/input.at: Apply this change. 2012-09-26 Theophile Ranquet errors: indent "result type clash" error context This used to be the format of the error report: input.y:6.5-10: result type clash on merge function 'merge': [...] input.y:2.4-9: previous declaration In order to distinguish the actual error from the context provided, we rather this new output: input.y:6.5-10: result type clash on merge function 'merge': [...] input.y:2.4-9: previous declaration Another patch will introduce an "error: " prefix to all non-indented lines, giving yet better readability to the reports. * src/complain.h (SUB_INDENT): Move to here. * src/reader.c (record_merge_function_type): Use complain_at_indent to output with increased indentation level. * src/scan-code.l (SUB_INDENT): Remove from here. * tests/glr-regression.at: Apply this change. 2012-09-25 Akim Demaille warnings: use the regular interface for s/r and r/r conflicts The current routines used to display s/r and r/r conflicts are both inconvenient from the programmer point of view (they do not use the warning infrastructure) and for the user (the messages are rather terse, not necessarily pleasant to read, and because they don't use the same routines, they look different). It was due to the belief (dating back to the initial checked-in version of Bison) that, at some point, POSIX Yacc mandated the format for these messages. Today, the Open Group's manual page for Yacc, , explicitly states that the format of these messages is unspecified. See commit be7280480c175bed203883f524c7dcd6cf37c13d and . For a discussion on the chosen warning format, see http://lists.gnu.org/archive/html/bison-patches/2012-09/msg00039.html In an effort to factor the handling of errors and warnings, use the Bison warning routines to report these messages. * src/conflicts.c (conflicts_print): Rewrite with clearer sections about S/R and then R/R conflicts. (conflict_report): Remove, inlined in its sole caller... (conflicts_output): here. * tests/conflicts.at, tests/existing.at, tests/glr-regression.at, * tests/reduce.at, tests/regression.at: Adjust the expected results. * NEWS: Update. 2012-09-25 Akim Demaille regen 2012-09-25 Akim Demaille yacc: fix handling of CPP guards when no header is generated When no header was to be generated, Bison would issue: /* In a future release of Bison, this section will be replaced by #include "". */ #ifndef YY_ # define YY_ It now properly generates nothing. * data/c.m4 (b4_cpp_guard_open, b4_cpp_guard_close): Issue nothing when the file name is empty. * data/yacc.c: Do not generate the above comment when there is no header to generate. * NEWS: Update. 2012-09-25 Akim Demaille gnulib: update 2012-09-21 Akim Demaille conflicts: refactor the counting routines * src/conflicts.c (count_sr_conflicts, count_rr_conflicts): Rename as... (count_sr_conflicts, count_rr_conflicts): these. Use size_t for counts. (count_sr_conflicts, count_rr_conflicts): New. Use them. 2012-09-21 Akim Demaille %expect-rr is for GLR only * src/conflicts.c (conflicts_print): Complain about %expect-rr if not in GLR mode, regardless of the number of reduce/reduce conflicts. * tests/conflicts.at (%expect-rr non GLR): New test. * NEWS: Update. 2012-09-21 Akim Demaille TODO: lalr1.cc master vs maint * TODO: here. 2012-09-21 Akim Demaille c++: coding style fixes * data/lalr1.cc, tests/c++.at: Formatting changes. 2012-09-21 Akim Demaille Revert "introduced a GCC-like -Werror=type" This reverts commit 981c53e257f1974854edc4f6ad0e88c7f18e2bea. 2012-09-21 Akim Demaille Revert "made previous commit less hairy" This reverts commit fd01e1d05ea3e627033d148b5400b99a18ac7ba3. 2012-09-21 Akim Demaille Revert "new Werror report format fixed in a test" This reverts commit 41511178a71ebaf81bde7ffc682c575537af45cb. 2012-09-21 Theophile Ranquet new Werror report format fixed in a test * tests/input.at : replaced [-Wyacc] with [-Werror=yacc] todo: fix the other failed test of the suite, tests/conflicts.at:1554 2012-09-21 Theophile Ranquet made previous commit less hairy * src/getargs.c : here 2012-09-20 Theophile Ranquet introduced a GCC-like -Werror=type * src/complain.h : errors_flag variable * src/complain.c : actual stuff happens here * src/conflits.c : differentiated SR and RR conflicts * src/getargs.c : flags_argmatch recognizes the new -Werror format 2012-09-04 Akim Demaille regen 2012-09-04 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: remove useless file update files to ignore remove useless include use locale-indep. c_is* functions for parsing, not isspace, isprint etc gnulib: update --help: include a place to report translation issues tests: style changes tests: fix push-pull test yacc.c: style changes 2012-09-04 Akim Demaille maint: remove useless file * externals/bootstrap.cfg: Remove. This file was used by a specific build system. It was added to the master repository by accident. 2012-09-04 Akim Demaille update files to ignore * doc/.gitignore: Don't ignore split info files as we don't split our info file. See . 2012-09-04 Akim Demaille remove useless include * src/system.h: Don't include sys/types.h. Reported by Eric Blake, . (FUNCTION_PRINT): Remove, unused. 2012-09-03 Jim Meyering use locale-indep. c_is* functions for parsing, not isspace, isprint etc * src/parse-gram.y: Include "c-ctype.h". (add_param): Parse with c_isspace, not isspace. * src/parse-gram.c: Likewise. * src/scan-gram.l: Include c-ctype.h, not ctype.h. (SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER): Use c_isspace and c_isprint, not ctype.h's locale-dependent functions. 2012-09-03 Akim Demaille gnulib: update 2012-09-03 Akim Demaille --help: include a place to report translation issues http://lists.gnu.org/archive/html/bug-bison/2012-08/msg00007.html shows that it is useful to help users report translation issues. While at it, include other informative bits that the coreutils shows. * src/getargs.c (usage): Report more URLs where the user can refer to. Mostly copied/pasted from coreutils' emit_ancillary_info function. 2012-09-03 Akim Demaille news: style changes * NEWS: Minor improvements. 2012-09-03 Akim Demaille use -Wdeprecated for obsolete %define variable names * src/muscle-tab.c (muscle_percent_variable_update): Here. * tests/input.at (%define backward compatibility): Update expectations. 2012-09-03 Akim Demaille introduce -Wdeprecated GCC seems to be using "deprecated" consistently over "obsoleted", so use -Wdeprecated rather than -Wobsolete. * src/complain.h (warnings): Add Wdeprecated. * src/complain.c (warnings_print_categories): Adjust. * src/getargs.c: Likewise. * doc/bison.texi: Document it. * src/scan-code.l: Use this category for the trailing ';' support. * tests/actions.at: Adjust expected output. 2012-09-03 Akim Demaille undefined but unused is a warning * src/symtab.c (symbol_check_defined): Undeclared symbols are only a warning. * tests/input.at (Undeclared symbols used for a printer or destructor): Rename as... (Undefined symbols): this, and check this case. * NEWS: Doc it. 2012-09-03 Akim Demaille glr.cc: %defines is no longer mandatory * data/glr.cc: No longer require %defines. When it is not given, define the position and location classes instead of including their headers. (b4_shared_declarations): Use the original parse-params. * data/glr.c (b4_shared_declarations): Define only if undefined. * tests/actions.at, tests/calc.at: No longer force the use of %defines for glr.cc. * NEWS: Doc it. 2012-09-03 Akim Demaille todo: check push parsers 2012-09-03 Akim Demaille style: remove useless C++ provisio * src/complain.h: here. 2012-09-03 Akim Demaille parser: style changes * src/parse-gram.y: Avoid deprecated directives. 2012-09-03 Akim Demaille doc: address a fixme * doc/bison.texi (Calc++ Parser): Add a cross-reference. 2012-09-03 Akim Demaille style changes * data/glr.cc, tests/actions.at: Fix comments. * src/symtab.h, src/symtab.c: Fix indentation/comments. * src/symlist.c: Fix indentation. 2012-08-31 Akim Demaille tests: style changes * tests/torture.at (AT_DATA_STACK_TORTURE): M4 style changes to improve readability. Fix an assertion which, because of a <= instead of ==, did not check new_status as visibly meant. (get_args): New. 2012-08-31 Akim Demaille tests: fix push-pull test * tests/torture.at: %push-pull-parser is no longer supported. 2012-08-31 Akim Demaille yacc.c: style changes * data/yacc.c: (yytoken): Define with initial value. 2012-08-12 Akim Demaille refactoring: define variables with a value * src/muscle-tab.c: Where possible, fuse definition and initial assignment. 2012-08-12 Akim Demaille minor refactoring: shorten variable names * src/scan-skel.l (at_directive_argc, at_directive_argv) (AT_DIRECTIVE_ARGC_MAX): Rename as... (argc, argv, ARGC_MAX): these, as there is no possible confusion. (flags): New. (QPUTS): Remove, inline its only use. 2012-08-12 Akim Demaille obstacks: simplifications * src/system.h (obstack_finish0): New. Use it to simplify several uses. * src/muscle-tab.h (MUSCLE_INSERTF): New. * src/muscle-tab.c: Use obstack_printf where simpler. 2012-08-12 Akim Demaille minor refactoring in user code scanning * src/scan-code.l (show_sub_message, show_sub_messages): Instead of a Boolean, take a "warnings" argument. Avoid storing printf-like format strings in a variable, so that GCC can check them. 2012-08-12 Akim Demaille minor refactoring in user code scanning * src/scan-code.l (show_sub_message): New, extracted from... (show_sub_messages): here. 2012-08-03 Akim Demaille tests: strengthen the trailing spaces check * tests/calc.at: here. * data/glr.c: Fix accordingly. 2012-08-03 Akim Demaille regen 2012-08-03 Akim Demaille Merge branch 'maint' * origin/maint: maint: post-release administrivia version 2.6.2 NEWS: update. yacc: remove trailing end of line at end of file thanks: fix a contributor name gnulib: update tests: synch line -> syncline, for consistency tests: synclines: style changes tests: synclines: fix perl invocation regen c++: trailing end-of-lines in %parse-param tests: simplify 2012-08-03 Akim Demaille regen 2012-08-03 Akim Demaille remove support for lint Basically revert commit 12ce2df60d16961eaa03a5aa009eeaa645e4e1cb. http://lists.gnu.org/archive/html/bison-patches/2012-08/msg00004.html * data/c.m4, data/glr.c, data/yacc.c (YYID): Remove. No longer use ARGSUSED. * src/getargs.c: Restore simpler inclusion of getopt.h (anyway, since then we now use gnulib which certainly protects us from such issues). 2012-08-03 Akim Demaille skeletons: renamings after knr removal * data/c.m4 (b4_yydestruct_generate, b4_yy_symbol_print_generate): Rename as... (b4_yydestruct_define, b4_yy_symbol_print_define): these, for consistency. * data/glr.c, data/glr.cc, data/yacc.c: Adjust. 2012-08-03 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-08-03 Akim Demaille version 2.6.2 * NEWS: Record release date. 2012-08-02 Akim Demaille c++: fix a comment * data/c++.m4: Be sure to attach a ';' to its declaration, otherwise it appears in the preceding comment. 2012-08-02 Akim Demaille skeletons: simplify after knr removal * data/c.m4 (b4_yydestruct_generate, b4_yy_symbol_print_generate): They no longer need an argument, it has a single possible value. * data/glr.c, data/yacc.c: Adjust. 2012-08-02 Akim Demaille skeletons: renamings after knr removal * data/c.m4 (b4_c_comment_, b4_c_args, b4_c_function_def) (b4_c_function_decl, b4_c_formals, b4_c_call, b4_c_arg): Rename as... (b4_comment, b4_args, b4_function_define, b4_function_declare, b4_formals, b4_function_call, b4_arg): these. * data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c: Adjust. 2012-08-02 Akim Demaille skeletons: b4_args -> b4_join to prepare forthcoming changes * data/bison.m4 (b4_args, _b4_args): Rename as... (b4_join, _b4_join): these. * data/c++.m4, data/lalr1.cc, data/variant.hh: Adjust. 2012-08-02 Akim Demaille regen 2012-08-02 Akim Demaille YYPARSE_PARAM: drop support * data/yacc.c: No longer support it. * doc/bison.texi, tests/headers.at: Adjust. * NEWS: Document. 2012-08-02 Akim Demaille skeletons: remove K&R C support * data/c.m4 (b4_c_modern, b4_c_knr_formal_names, b4_c_knr_formal_decls) (b4_c_knr_formal_decl, b4_c_formal_names, b4_c_formal_decls) (b4_c_formal_decl): Remove. (b4_c_ansi_formal_names, b4_c_ansi_formal_decls, b4_c_ansi_formal_decl): Rename as... (b4_c_formal_names, b4_c_formal_decls, b4_c_formal_decl): these. * data/glr.c, data/glr.cc, data/yacc.c: Adjust. 2012-08-02 Akim Demaille NEWS: update. * NEWS: Catch up with the other changes from 2.6.1. 2012-08-02 Akim Demaille yacc: remove trailing end of line at end of file There are still spurious spaces at the end of some lines. But this is addressed in the master branch, and I am reluctant to try to backport this. * data/yacc.c, data/glr.c, data/lalr1.cc, data/glr.cc: here. * tests/calc.at (AT_CHECK_SPACES): New. Use it. Be sure not to introduce trailing empty lines in the *.y files. * NEWS: Doc it. * cfg.mk (syntax-check): Remove the exception. 2012-08-02 Akim Demaille thanks: fix a contributor name * THANKS: On his request. 2012-08-01 Akim Demaille gnulib: update 2012-08-01 Akim Demaille tests: synch line -> syncline, for consistency * tests/synclines.at: Do it, as "syncline" is used consistently everywhere else in Bison. 2012-08-01 Akim Demaille tests: synclines: style changes * tests/synclines.at (AT_TEST_SYNCLINE): Rename as... (AT_TEST): this. Use pushdef/popdef. Formatting changes. Use '+' instead of '*' where appropriate. 2012-08-01 Akim Demaille tests: synclines: fix perl invocation Reported by Summum Bonum. * tests/synclines.at: Fix Perl invocation: its -f is not like sed's. 2012-08-01 Akim Demaille regen 2012-08-01 Akim Demaille c++: trailing end-of-lines in %parse-param * src/parse-gram.y (add_param): No only skip ' ' and '\t', skip all leading and trailing spaces. * tests/regression.at (Lex and parse params): Check it. * NEWS: Document it. 2012-08-01 Akim Demaille tests: simplify * tests/regression.at: Remove useless compilations: AT_FULL_COMPILE includes the compilation by bison. 2012-07-31 Akim Demaille todo: more items * TODO: $ in the epilogue, and obstack_copy. 2012-07-31 Akim Demaille Merge branch 'maint' * maint: use obstack_printf scanner: restore a missing start condition gnulib: update maint: post-release administrivia version 2.6.1 gnulib: update maint: fix some syntax-check issues tests: do not depend on __cplusplus to decide for C++ or C output 2012-07-31 Akim Demaille tests: comment changes * tests/actions.at, tests/input.at: here. 2012-07-31 Akim Demaille tests: really check the set of generated files * tests/output.at (AT_CHECK_OUTPUT): It used to check that the expected files are indeed generated, but it did not check that there are no additional ones. Do that, and adjust expectations (in particular alphabetical order). 2012-07-31 Akim Demaille lalr1.cc: do not create stack.hh without %defines * data/stack.hh (b4_stack_define): New. * data/lalr1.cc: Use it when %defines is not passed. * tests/output.at: Adjust expected output. 2012-07-31 Akim Demaille lalr1.cc: location.hh and position.hh are not generated without %defines * data/location.cc (b4_position_define, b4_location_define): New. (location.hh, position.hh): Generate only if %defines. * data/lalr1.cc: therefore, define these classes when locations are needed, but headers are not generated. * tests/output.at: Check that these files are not generated. * NEWS: Document. 2012-07-31 Akim Demaille lalr1.cc: no longer require %defines. * data/lalr1.cc: Generate the parser header only when %defines is passed. * tests/calc.at: Check it. 2012-07-31 Akim Demaille skeletons: style changes * data/glr.c, data/lalr1.cc: Use more consistent comments, and YY_NULL declaration. 2012-07-31 Akim Demaille glr.cc, lalr1.cc: define b4_shared_declarations * data/glr.cc, data/lalr1.cc: here. The name is no longer right, but at least it is consistent with the other skeletons. 2012-07-31 Akim Demaille glr.cc: no longer require location support * data/glr.cc: Use b4_locations_if where appropriate. * data/lalr1.cc: M4 quotation changes to highlight code duplication with glr.cc. * tests/calc.at: Check glr.cc with and without %location. While at it, fuse multiple %parse-params into one. * tests/actions.at: Simplify. * NEWS: Doc this. Some other wording changes. 2012-07-31 Akim Demaille use obstack_printf This is not just nicer, it is also much safer, since we were using sprintf... * bootstrap.conf: Require it. * src/system.h (obstack_fgrow1, obstack_fgrow2, obstack_fgrow3) (obstack_fgrow4): Remove. Adjust dependencies. 2012-07-30 Akim Demaille scanner: restore a missing start condition $ flex src/scan-skel.l src/scan-skel.l:145: multiple <> rules for start condition SC_AT_DIRECTIVE_ARGS src/scan-skel.l:145: multiple <> rules for start condition SC_AT_DIRECTIVE_SKIP_WS This is warning, and it seems there are no means to make it an error. * src/scan-skel.l: Restore the start-condition INITIAL for an <> clause. 2012-07-30 Akim Demaille gnulib: update 2012-07-30 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-07-30 Akim Demaille version 2.6.1 * NEWS: Record release date. 2012-07-30 Akim Demaille gnulib: update 2012-07-27 Akim Demaille maint: fix some syntax-check issues * cfg.mk: Nuke the following warnings which are confused by our text reports (that state that the error token is number 256). prohibit_magic_number_exit ../../doc/bison.texi:8170:error (256) ../../tests/conflicts.at:570:error (256) ../../tests/conflicts.at:673:error (256) ../../tests/conflicts.at:811:error (256) ../../tests/conflicts.at:1154:error (256) ../../tests/regression.at:281:error (256) ../../tests/regression.at:582:error (256) maint.mk: use EXIT_* values rather than magic number 2012-07-27 Akim Demaille regen 2012-07-27 Akim Demaille tests: do not depend on __cplusplus to decide for C++ or C output Since we do support compiling C code with a C++ compiler. * tests/actions.at (Qualified $$ in actions): Use AT_SKEL_CC_IF. 2012-07-27 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: (29 commits) regen synclines: remove spurious empty line also support $$ in the %initial-action skeletons: b4_dollar_pushdef and popdef to simpify complex definitions regen printer/destructor: translate only once factor the handling of m4 escaping news: schedule the removal of the ";" hack style changes in the scanners regen support $$ in printers and destructors scan-code: factor the handling of the type in $$ muscles: fix another occurrence of unescaped type name glr.cc: fix the handling of yydebug gnulib: update formatting changes tests: fix an assertion tests: adjust to GCC 4.8, which displays caret errors be sure to properly escape type names obstack_quote: escape and quote for M4 muscles: shuffle responsabilities muscles: make private functions static muscles: rename private functions/macros obstack_escape: escape M4 characters remove dead macro maint: style changes doc: avoid problems with case insensitive file systems configure: fix botched quoting news: fix typo. 2012-07-27 Akim Demaille regen 2012-07-27 Akim Demaille synclines: remove spurious empty line * data/bison.m4 (b4_syncline): Do not start with an empty line. 2012-07-27 Akim Demaille also support $$ in the %initial-action scan-code.l is already passing argument to b4_dollar_dollar for the initial acton, but its definition (of b4_dollar_dollar) does not use this argument. Generalize this definition, and use it for the %initial-action too. * data/c.m4 (b4_dollar_dollar_, b4_dollar_pushdef, b4_dollar_popdef): Instead of expecting a pointer, require a value, and use ".". Since they are now generic enough, move to... * data/c-like.m4: this new file. * data/c.m4, data/java.m4: Load it. * data/glr.c, data/lalr1.cc, data/lalr1.java, data/yacc.c: Use b4_dollar_pushdef for the %initial-action. * tests/actions.at: Check that. * data/Makefile.am: Adjust. * NEWS, doc/bison.texi: Document. 2012-07-27 Akim Demaille skeletons: b4_dollar_pushdef and popdef to simpify complex definitions M4 is really making it uselessly hard to define macros that define macros. * data/c.m4 (b4_dollar_pushdef, b4_dollar_popdef): New. Use it. 2012-07-27 Akim Demaille regen 2012-07-27 Akim Demaille printer/destructor: translate only once Currently "%printer {...} a b c d e f" translates the {...} six times. Not only is this bad for time and space, it also issues six times the same warnings. * src/symlist.h, src/symlist.c (symbol_list_destructor_set) (symbol_list_printer_set): Take the action as code_props instead of const char *. * src/parse-gram.y: Translate these actions here. * src/scan-code.h: Comment change. * tests/input.at: Check that warnings are issued only once. 2012-07-27 Akim Demaille factor the handling of m4 escaping The conversion from @ to @@ and so forth is coded is too many different places. Factor, a bit. * src/scan-code.l: Instead of duplicating the logic of obstack_escape, use it. It sure is less efficient, but the cost is negligible. This allows to factor rules that are alike. And to factor some start-condition clauses. * tests/input.at (Stray $ or @): New. * NEWS: Document it. 2012-07-27 Akim Demaille news: schedule the removal of the ";" hack scan-code.l is significantly more complex because of this. * NEWS: Doc it. 2012-07-27 Akim Demaille style changes in the scanners * src/scan-code.l, src/scan-skel.l: Use a more traditional indentation style for start-conditions. Prefer "continue" to a comment, for empty actions. Strip useless {}. Remove useless start-condition clauses. 2012-07-26 Akim Demaille regen 2012-07-26 Akim Demaille support $$ in printers and destructors * src/scan-code.l (SC_SYMBOL_ACTION): Accept $$, not just $$. * data/c.m4 (b4_dollar_dollar_): New. (b4_symbol_actions): Let b4_dollar_dollar use b4_dollar_dollar_. * NEWS, doc/bison.texi: Document it. * tests/actions.at: Check this for C and C++. 2012-07-26 Akim Demaille scan-code: factor the handling of the type in $$ * src/scan-code.l (fetch_type_name): New. (handle_action_dollar): Use it. (gt_ptr): Remove, useless. 2012-07-26 Akim Demaille muscles: fix another occurrence of unescaped type name * src/output.c (quoted_output): Split into... (quoted_output, string_output): these. Use the former when outputting a type_name. * tests/input.at: Check this case. * src/symtab.h: Comment changes. 2012-07-26 Akim Demaille glr.cc: fix the handling of yydebug * data/glr.cc (yydebug_): Remove, unused. (set_debug_level, debug_level): Work on yydebug instead. * doc/bison.texi, NEWS: Document this. 2012-07-26 Akim Demaille gnulib: update 2012-07-26 Akim Demaille formatting changes * src/symtab.h: here. 2012-07-26 Akim Demaille tests: fix an assertion * tests/local.at (AT_YYLEX_DEFINE): Be sure to check the array against its length, not its size in bytes. 2012-07-26 Akim Demaille tests: adjust to GCC 4.8, which displays caret errors With GCC 4.8, the tests on synclines are skipped. Transform input.y:1:2: error: #error "1" #error "1" ^ into input.y:1: #error "1" * tests/synclines.at (AT_SYNCLINES_COMPILE): Do it, using Perl instead of sed. 2012-07-26 Akim Demaille be sure to properly escape type names * src/scan-code.l: Use obstack_quote when passing type_name to m4. * tests/input.at (Code injection): New. * NEWS: Document it. Thanks to Paul Eggert for the wording. 2012-07-26 Akim Demaille obstack_quote: escape and quote for M4 * src/system.h (obstack_quote): New. * src/muscle-tab.c: Use it instead of obstack_escape where applicable. * src/scan-code.l: Since obstack_quote supports NULL, leave type_name as NULL instead of defaulting to "". 2012-07-26 Akim Demaille muscles: shuffle responsabilities * src/muscle-tab.c (muscle_boundary_grow): Be in charge of quotation, instead of leaving this to the caller. 2012-07-26 Akim Demaille muscles: make private functions static * src/muscle-tab.h, src/muscle-tab.c (muscle_boundary_grow) (muscle_location_grow): Now static. 2012-07-26 Akim Demaille muscles: rename private functions/macros * src/muscle-tab.c (MUSCLE_COMMON_DECODE, muscle_string_decode) (muscle_location_decode): Not related to muscles, rename as... (COMMON_DECODE, string_decode, location_decode): these. 2012-07-26 Akim Demaille obstack_escape: escape M4 characters * src/muscle-tab.h (MUSCLE_OBSTACK_SGROW): This is not related to muscles, so move to, and rename as... * src/system.h (obstack_escape): this. Adjust dependencies. 2012-07-26 Akim Demaille remove dead macro * src/system.h (DEFAULT_TMPDIR): Remove, unused. 2012-07-26 Akim Demaille maint: style changes * src/scan-code.l: Remove useless braces. Formatting changes. Prefer NULL to 0. * src/muscle-tab.c, src/system.h: Formatting changes. 2012-07-24 Akim Demaille doc: avoid problems with case insensitive file systems makeinfo --html generates index.html, and the node "Index" will result in Index.html. On case insensitive file systems, such as on Mac OS X by default, this results in a single, invalid, file (Texinfo 4.13). See http://lists.gnu.org/archive/html/bug-texinfo/2012-07/msg00032.html * doc/bison.texi (Index): Rename as... (Index of Terms): this. 2012-07-24 Stefano Lattarini (tiny change) configure: fix botched quoting * configure.ac: In the AC_SUBST call on 'VALGRIND_PREBISON'. Without this change, when running ./configure, I see: ... checking for valgrind... valgrind ./configure: line 35221: -q: command not found checking for Java compiler... gcj -C -fsource=1.3 -ftarget=1.4 ... 2012-07-24 Akim Demaille regen 2012-07-24 Akim Demaille yystype, yyltype: remove. * data/c.m4: here. * NEWS: Doc it. 2012-07-22 Akim Demaille regen 2012-07-22 Akim Demaille YYFAIL: remove. * data/lalr1.java, data/yacc.c, src/scan-code.l: Remove YYFAIL support. * NEWS, TODO: Update. 2012-07-22 Akim Demaille todo: update. * TODO: obsolete items. 2012-07-22 Akim Demaille regen. 2012-07-22 Akim Demaille space changes. * data/bison.m4 (b4_symbol_action): Remove spurious eol in the output. 2012-07-22 Akim Demaille parser: fix %printer usage. * src/parse-gram.y: Instead of stderr, using yyo. 2012-07-22 Akim Demaille parser: factor the handling of code_props * src/parse-gram.y: Now that %printer and %destructor are treated equally, let... (code_props_type): handle them. 2012-07-22 Akim Demaille parser: factor handling of type tags * src/parse-gram.y: Now that <*> and <> are processed like regular tags, let... (tag): handle them. 2012-07-22 Akim Demaille regen. 2012-07-22 Akim Demaille simplify the handling of <> and <*>'s code_props. Currently they are treated in separated variables, contrary to other code_props. This duplicates code (and messages for translators) uselessly, as demonstrated by the fact that thanks to this patch, now useless <*> and <> code_props are reported like the others. * src/parse-gram.y (generic_symlist_item): Treat "<*>" and "<>" as regular type tags. * src/symlist.h, src/symlist.c (symbol_list_default_tagged_new) (symbol_list_default_tagless_new,SYMLIST_DEFAULT_TAGGED) (SYMLIST_DEFAULT_TAGLESS): Remove. * src/symtab.h, src/symtab.c (default_tagged_code_props) (default_tagless_code_props, default_tagged_code_props_set) (default_tagless_code_props_set): Remove. (symbol_code_props_get): Default to <*> or <>'s code_props. * tests/actions.at: Complete expected errors: there are new warnings. * tests/input.at: Likewise. (Useless printers or destructors): Extend. 2012-07-22 Akim Demaille allow modification on retrieved code_props. The logic to compute the %printer or %destructor to used (i.e., a code_props) is implemented twice: one, of course, in symbol_code_props_get, and another time in symbol_check_defined to record the fact that a code_props is used (so that we can reported unused ones). Let the former use the latter. I would probably use "mutable" in C++ and keep these guys const, but this is C. And casting away constness triggers warnings. * src/scan-code.h, src/scan-code.l (code_props_none): Is not const. * src/symtab.h, src/symtab.c (symbol_code_props_get): The symbol is not const. (symbol_check_defined): Use it. 2012-07-22 Akim Demaille maint: regen. 2012-07-22 Akim Demaille maint: fix bison's own header guards. Because I'm using a VPATH build with an absolute srcdir, I have GRAM__USERS_AKIM_SRC_GNU_BISON_SRC_PARSE_GRAM_H. Before, I was using a relative srcdir, and had GRAM_______SRC_PARSE_GRAM_H (coming from ../../). Let it be GRAM_SRC_PARSE_GRAM_H. * tests/bison.in: Do not depend on the value of $top_srcdir for Bison itself. If we were to use relative paths from .c to .y, we would not have this problem. 2012-07-22 Akim Demaille maint: add missing const. * src/symtab.h, src/symtab.c (symbol_print): here. 2012-07-22 Akim Demaille style changes. * src/parse-gram.y, src/symtab.c: Space changes. * src/symtab.h: Comment changes. 2012-07-22 Akim Demaille autoconf: update. * submodules/autoconf: here. No significant changes for our use of m4sugar.m4. 2012-07-22 Akim Demaille output: no longer use b4_tokens. * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, data/yacc.c: Since the previous commit, b4_tokens_define and the like no longer need b4_tokens. * src/output.c (token_definitions_output): Remove. 2012-07-22 Akim Demaille output: use the token list to define the yytokentype There are currently two systems used to pass information about tokens to m4: the original one, and another, which is used for instance for printers and destructors, variants etc. Move to using only the latter. * data/bison.m4 (b4_symbol_map, b4_token_visible_if) (b4_token_has_definition, b4_any_token_visible_if, b4_token_format): New. * data/c++.m4, data/c.m4, data/glr.c, data/java.m4: Adjust to use them. 2012-07-20 Akim Demaille tests: fix VPATH issue * examples/test: With an absolute VPATH build, "../" is incorrect. 2012-07-20 Akim Demaille news: fix typo. * NEWS: here. Reported by Ben Pfaff. 2012-07-19 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: update gnu-web-doc-update. maint: post-release administrivia version 2.6 maint: prepare for release 2.6 maint: post-release administrivia version 2.5.91 maint: prepare NEWS. maint: fix spaces. tests: adjust to case where the C compiler is actually a C++ compiler tests: fix dependencies doc: fix Texinfo command maint: Valgrind on OS X. tests: be sure that backups are safe. maint: dead comment. tests: refactor for legibility. tests: refactor the bison invocations. maint: fix syntax-check ignore patterns. gnulib: update gnulib: update. gnulib: update 2012-07-19 Akim Demaille maint: update gnu-web-doc-update. * gnulib: here. 2012-07-19 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-07-19 Akim Demaille version 2.6 * NEWS: Record release date. 2012-07-19 Akim Demaille maint: prepare for release 2.6 * NEWS: here. 2012-07-18 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-07-18 Akim Demaille version 2.5.91 * NEWS: Record release date. 2012-07-18 Akim Demaille maint: prepare NEWS. 2012-07-18 Akim Demaille maint: fix spaces. * build-aux/Makefile.am: here. 2012-07-18 Akim Demaille tests: adjust to case where the C compiler is actually a C++ compiler * tests/atlocal.in (CC_IS_CXX): New. * tests/headers.at (Several parsers): Use it. 2012-07-18 Akim Demaille tests: fix dependencies * tests/Makefile.am: we need atconfig and atlocal to be up to date when calling testsuite. 2012-07-18 Akim Demaille doc: fix Texinfo command * doc/bison.texi: In parens, use @pxref. 2012-07-18 Akim Demaille maint: Valgrind on OS X. * configure.ac (VALGRIND_PREBISON): New. * tests/Makefile.am (maintainer-check-valgrind): Use it. * etc/darwin11.4.0.supp: New. * configure.ac, etc/Makefile.am: Use it. * configure.ac: Disable Valgrind on Mac OS X. * README-hacking: Explain why. 2012-07-17 Akim Demaille tests: be sure that backups are safe. * tests/local.at (at_save_special_files): here. 2012-07-17 Akim Demaille maint: dead comment. * etc/README: here. 2012-07-17 Akim Demaille tests: refactor for legibility. * tests/local.at (AT_BISON_CHECK_WARNINGS, AT_BISON_CHECK_WARNINGS_): New. 2012-07-17 Akim Demaille tests: refactor the bison invocations. * tests/local.at (m4_null_if, AT_BISON_CHECK_): New. 2012-07-17 Akim Demaille maint: fix syntax-check ignore patterns. * cfg.mk: here. 2012-07-17 Akim Demaille gnulib: update 2012-07-16 Akim Demaille gnulib: update. * gnulib: Update so that gitlog-to-changelog support --srcdir. * Makefile.am: Use it. 2012-07-10 Akim Demaille gnulib: update * bootstrap, build-aux/.gitignore, gnulib, m4/.gitignore: update. 2012-07-06 Akim Demaille maint: minor fixes * NEWS: restore missing entry. * cfg.mk: Adjust to *.texinfo -> *.texi. * src/symtab.c: Spaces fixes. 2012-07-06 Akim Demaille tests: address g++-4.8 warnings. list.yy: In function 'yy::parser::symbol_type yylex()': list.yy:107:29: error: typedef 'token' locally defined but not used [-Werror=unused-local-typedefs] typedef yy::parser::token token; ^ * tests/c++.at (AT_CHECK_VARIANTS): here. 2012-07-06 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: update release instructions maint: post-release administrivia version 2.5.90 build: fix gen-ChangeLog call. gnulib: update. tests: fix SKIP_IF for Java. api.prefix: incompatible with %name-prefix. api.prefix: strengthen the tests and fix push-parsers. skeletons: style changes. NEWS: minor changes. api.prefix: improve the documentation for YYDEBUG. gnulib: update. 2012-07-06 Akim Demaille maint: update release instructions * README-hacking: here. 2012-07-05 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-07-05 Akim Demaille version 2.5.90 * NEWS: Record release date. 2012-07-05 Akim Demaille build: fix gen-ChangeLog call. * Makefile.am: Be sure to catch errors, and fix option name 2012-07-05 Akim Demaille gnulib: update. * gnulib/build-aux/do-release-commit-and-tag: Fix. 2012-07-05 Akim Demaille tests: fix SKIP_IF for Java. * tests/local.at (AT_JAVA_COMPILE): here. 2012-07-05 Akim Demaille api.prefix: incompatible with %name-prefix. * data/bison.m4: Make it incompatible. * tests/input.at: Check that it is. 2012-07-05 Akim Demaille api.prefix: strengthen the tests and fix push-parsers. * tests/calc.at: Check api.prefix in addition to %name-prefix. * tests/headers.at: Check push parsers and pure interface. * tests/local.at: Use YYLTYPE renamed. * data/yacc.c (b4_declare_yyparse_push_): Handle api.prefix. * doc/bison.texi: Style changes. 2012-07-05 Akim Demaille skeletons: style changes. * data/bison.m4: Define default values after having defined the support macros. Kill a dead comment. 2012-07-05 Akim Demaille NEWS: minor changes. * NEWS: style changes. 2012-07-05 Akim Demaille api.prefix: improve the documentation for YYDEBUG. * doc/bison.texi: Explain how api.prefix is applied to YYDEBUG. 2012-07-05 Akim Demaille gnulib: update. * bootstrap, gnulib: Update. * cfg.mk (syntax-check): Don't check "error" usage in bison.texi. 2012-07-04 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: headers.at: strengthen. glr.cc: do not override C++ definitions by C macros. YYLLOC_DEFAULT: factor, and don't export it in headers. api.prefix: do not use #define to handle YYSTYPE_IS_TRIVIAL etc. tests: portability fixes. c++: fewer #includes in the headers. glr.cc: formatting changes. tests: more logs. api.prefix: also rename YYDEBUG. 2012-07-04 Akim Demaille tests: headers.at: strengthen. * tests/headers.at (Several headers): Be stricter when checking the exported macros. 2012-07-04 Akim Demaille glr.cc: do not override C++ definitions by C macros. * data/glr.c: here. * data/glr.cc: Fix overquotation. * tests/headers.at: Comment changes. 2012-07-04 Akim Demaille YYLLOC_DEFAULT: factor, and don't export it in headers. * data/c++.m4, data/c.m4 (b4_yylloc_default_define): New. * data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c: Use it. * data/glr.cc: Do not define YYLLOC_DEFAULT in the header file, but in the implementation one. 2012-07-04 Akim Demaille api.prefix: do not use #define to handle YYSTYPE_IS_TRIVIAL etc. The following mixture is insane: #define YYSTYPE_IS_TRIVIAL PREFIX_STYPE_IS_TRIVIAL #if (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL) since, of course YYSTYPE_IS_TRIVIAL is defined. Instead we could define YYSTYPE_IS_TRIVIAL as PREFIX_STYPE_IS_TRIVIAL only when the later is defined, but let's avoid stacking CPP on top of M4: rather, use #if (defined PREFIX_STYPE_IS_TRIVIAL && PREFIX_STYPE_IS_TRIVIAL) * data/glr.c, data/yacc.c: Use YYSTYPE_IS_TRIVIAL, YYSTYPE_IS_DECLARED, YYLTYPE_IS_TRIVIAL and YYLTYPE_IS_DECLARED under their api.prefix-renamed name. 2012-07-04 Akim Demaille tests: portability fixes. Reported by Hydra. * tests/headers.at (Several headers): Be sure to include config.h in the files to compile. 2012-07-04 Akim Demaille c++: fewer #includes in the headers. * data/lalr1.cc: Define YY_NULL in the *.cc file, it is not needed in the header. * data/location.cc: iosfwd suffices. 2012-07-04 Akim Demaille glr.cc: formatting changes. * data/glr.cc: here. 2012-07-04 Akim Demaille tests: more logs. * tests/headers.at (Several parsers): Here. 2012-07-04 Akim Demaille api.prefix: also rename YYDEBUG. The testsuite in master has shown weird errors for the "Mulitple Parsers" tests: the caller of p5.parse() received some apparently random value, while tracing p5.parse() showed that the function was consistently returning 0. It happens when mixing several parser headers, some generated without %debug, others with. In particular the C++ parser was generated with %debug, i.e., with: #ifndef YYDEBUG # define YYDEBUG 1 #endif and compiled separatedly. Yet, its header was included after the one of another parser, this time without %debug, i.e., with #ifndef YYDEBUG # define YYDEBUG 0 #endif in its header. As a result, the parser was compiled with YYDEBUG set, but its header was used without. Since the layout of the objects are then completely different, boom. Therefore, do not change the value of YYDEBUG. Rather, use it as a default value for DEBUG. * data/c.m4 (b4_YYDEBUG_define): New. (b4_declare_yydebug): Rename as... (b4_yydebug_declare): this, for consistency. * data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c: Use it. * NEWS: Document it. 2012-07-02 Akim Demaille formatting changes. * data/lalr1.cc: here. 2012-07-02 Akim Demaille NEWS: spell fixes. * NEWS: here. Reported by Stefano Lattarini. 2012-07-02 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: NEWS: spell check. api.prefix. 2012-07-02 Akim Demaille NEWS: spell check. * NEWS: here. 2012-06-29 Akim Demaille api.prefix. * data/c.m4 (b4_api_prefix, b4_api_PREFIX): New. (b4_prefix, b4_union_name, b4_token_enums, b4_declare_yylstype): Use them. * data/glr.c, data/yacc.c, data/glr.cc, data/lalr1.cc: Use them to change the prefix of exported preprocessor symbols. * src/getargs.c (usage): Ditto. * tests/headers.at (Several parsers): New. * tests/local.at (AT_API_PREFIX): New. AT_YYSTYPE, AT_YYLTYPE): Adjust. * doc/bison.texi (Multiple Parsers): Move documentation of %name-prefix to... (Table of Symbols): here. (Multiple Parsers): Document api.prefix. (%define Summary): Point to it. Use @code for variable names. (Bison Options): -p/--name-prefix are obsoleted. * NEWS: Announce api.prefix. 2012-06-29 Victor Santet warnings: display warnings categories * src/complain.c (error_message): Call 'warnings_print_categories'. * src/gram.c (grammar_rules_useless_report): Display itself warning category. * tests/actions.at, tests/conflicts.at, tests/existing.at, tests/input.at, tests/named-refs.at, tests/output.at, tests/reduce.at, tests/regression.at, tests/skeletons.at: Adjust. * NEWS: Document this. 2012-06-29 Victor Santet warnings: be ready to print warnings categories A function to print warnings categories, like -Wyacc, -Wother, etc. * src/complain.h, src/complain.c (print_warning_categories): New function. * src/output.c (ARRAY_CARDINALITY): Move it to file 'src/system.h'. * src/complain.h (enum warnings): New value, 'silent', "complain" must not display the warning type. 2012-06-29 Akim Demaille maint: prepare forthcoming changes * src/gram.c (rule_rhs_print): Do not print new line anymore. (rule_print): Make it static. * src/closure.c, src/derives.c, src/gram.c: Adjust. 2012-06-29 Victor Santet style changes * src/complain.c, src/reader.c, src/reduce.c, src/main.c: Fix indentation. Simplify a bit. 2012-06-28 Akim Demaille regen. 2012-06-28 Victor Santet warnings: factoring: complaints * src/complain.c (error_message): Accept warning categories (an integer) as argument. Location is a 'const location *' instead of 'location *'. (ERROR_MESSAGE): Delete it. * src/complain.c, src/complain.h (complains): New function. (complain, complain_at, complain_at_indent): Generic functions for complaints. Call 'complains'. (warn_at, warn_at_indent, warn, yacc_at, midrule_value_at) (fatal_at, fatal): Delete them. Adjust dependencies. * src/complain.h (enum warnings): New fields 'complaint' and 'fatal'. * bootstrap.conf (XGETTEXT_OPTIONS): Adjust. 2012-06-28 Victor Santet warnings: move them to complain.c. * src/getargs.h, src/getargs.c (warnings, warnings_flags): Move to... * src/complain.h, src/complain.c: Here. 2012-06-28 Victor Santet warnings: rename the categories Forthcoming changes will use the warning categories much more often, so shortening them will improve readability. * src/complain.c, src/complain.h, src/conflicts.c, * src/getargs.c, src/getargs.h, src/gram.c (enum warnings): s/warnings_/W/g. 2012-06-28 Akim Demaille fix merge. * data/bison.m4: Use b4_error_verbose_if after it was defined. 2012-06-28 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: use the generalized default yylex. tests: AT_YYERROR_DEFINE: prepare for list of ints. skeletons: no longer define YYLSP_NEEDED. c++: do not export YYTOKEN_TABLE and YYERROR_VERBOSE. 2012-06-28 Akim Demaille tests: use the generalized default yylex. * tests/actions.at, tests/glr-regression.at, tests/regression.at: here. 2012-06-28 Akim Demaille tests: AT_YYERROR_DEFINE: prepare for list of ints. * tests/local.at (AT_YYERROR_DEFINE): Don't add quotes, check their presence to detect char/int types. * tests/actions.at, tests/conflicts.at, tests/glr-regression.at, * tests/push.at, tests/regression.at: Adjust. 2012-06-27 Akim Demaille skeletons: no longer define YYLSP_NEEDED. * data/c.m4, data/glr.cc: here. * NEWS, TODO: Adjust. 2012-06-27 Akim Demaille c++: do not export YYTOKEN_TABLE and YYERROR_VERBOSE. * src/output.c (prepare_symbols): Do not define b4_token_table. (prepare): Define b4_token_table_flag. * data/bison.m4 (b4_token_table_if): New. Arm it when error-verbose. * data/glr.c, data/yacc.c (YYTOKEN_TABLE): Remove. Use m4. * data/lalr1.cc: Likewise. (YYERROR_VERBOSE): Remove. * NEWS, doc/bison.texi: Document this. 2012-06-26 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: use *.texi. 2012-06-26 Akim Demaille maint: use *.texi. This is more consistent with the other packages, and Automake-NG supports only *.texi. * doc/bison.texinfo: Rename as... * doc/bison.texi: this. * doc/Makefile.am, examples/calc++/Makefile.am: Adjust. 2012-06-26 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: do not output m4 set up. tests: use the generic yyerror function. tests: use assert instead of plain abort. tests: improve the generic yylex implementation. tests: generalize the compilation macros. tests: fix confusion between api.prefix and name-prefix. maint: gitignores. yacc: work around the ylwrap limitation. 2012-06-26 Victor Santet warnings: raise warning for useless printers or destructors * src/scan-code.h (code_props): Add field 'is_used'. (CODE_PROPS_NONE_INIT): Adjust. * src/scan-code.l (code_props_plain_init, code_props_symbol_action_init) (code_props_rule_action_init): Instead of implementing several times the initialization of the code_props structures, use code_props_none_init. * src/symtab.c (symbol_check_defined): If a symbol does not have a destructor (resp. printer) but has a type which has a destructor (resp. printer), then set field 'is_used' to true. (semantic_type_check_defined): If a type has a destructor (resp. printer) but all symbols of this type have already a destructor (resp. printer), then raise a warning. * tests/input.at (Useless printers or destructors): New. 2012-06-26 Akim Demaille tests: do not output m4 set up. * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Use a diversion to avoid outputting comments etc. Removes 17k lines from testsuite (10% of the number of lines). 2012-06-26 Akim Demaille tests: use the generic yyerror function. * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Factor. Use AT_YYERROR_DEFINE. Therefore, instead of using stdout, use and check stderr. * tests/glr-regression.at (Uninitialized location when reporting ambiguity): Use AT_YYERROR_DEFINE. 2012-06-26 Akim Demaille tests: use assert instead of plain abort. * tests/actions.at, tests/calc.at, tests/conflicts.at, * tests/cxx-type.at, tests/glr-regression.at, tests/input.at, * tests/named-refs.at, tests/regression.at, tests/torture.at, * tests/local.at: Prefer assert to abort. 2012-06-26 Akim Demaille tests: improve the generic yylex implementation. * tests/local.at (AT_YYSTYPE, AT_YYLTYPE): New. (AT_YYLEX_FORMALS): Use them. (AT_YYLEX_DEFINE): Be independent of the location implementation. 2012-06-26 Akim Demaille tests: generalize the compilation macros. * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): If OUTPUT ends with ".o", then append the "natural" extension for the input file (.c or .cc). If there is no source, pass -c. * tests/headers.at, tests/input.at, tests/regression.at: Adjust. 2012-06-26 Akim Demaille tests: fix confusion between api.prefix and name-prefix. * tests/local.at (AT_NAME_PREFIX): Take api.prefix into account. (AT_API_PREFIX): Rename as... (AT_API_prefix): this. Do not take %name-prefix into account. Fix misuses. 2012-06-26 Akim Demaille maint: gitignores. 2012-06-25 Victor Santet warnings: useless semantic types * src/symtab.h (symbol_list): Represent semantic types as structure 'semantic_type'. * src/symlist.c (symbol_list_type_new): Allocate this structure. (symbol_list_code_props_set): Set this semantic type's status to used if it was not declared. * src/symtab.c (semantic_types_sorted): New. (semantic_type_new): Set the new semantic type's location appropriately. (symbol_check_defined): If a symbol has a type, then set this type's status to "declared". (semantic_type_check_defined, semantic_type_check_defined_processor): Same as symbol_check_defined and symbol_check_defined_processor, but for semantic types. (symbol_check_defined): Check semantic types usefulness. * src/symtab.h (semantic_type): New fields 'location' and 'status'. * src/symtab.h, src/symtab.c (semantic_type_new) (semantic_type_from_uniqstr, semantic_type_get): Accept a location as a supplementary argument. * tests/input.at (Unassociated types used for printer of destructor): New. * tests/c++.at (AT_CHECK_VARIANTS): Fix an error caught by this commit. 2012-06-25 Akim Demaille yacc: work around the ylwrap limitation. * data/yacc.c (b4_shared_declarations): Include the header guards. Do not include the header in the *.c file, duplicate it. * NEWS (Future Changes): Extend, and announce the forthcoming change about the use of the parser header. 2012-06-25 Akim Demaille fix for printers and destructors. The previous "code_props: factor more" patch sends has_%printer etc. to m4, instead of has_printer. * src/output.c (prepare_symbol_definitions): Fix value of pname. 2012-06-25 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: tests: more uniformity. tests: handle locations in a more generic way. tests: handle locations in the generic yyerror functions. tests: fix AT_CHECK_CALC. tests: improve infrastructure tests: factor. skeletons: minor style changes tests: AT_LANG. c skeletons: factor the declaration of yylloc and yylval. news: condemn YYPARSE_PARAM and YYLEX_PARAM. maint: regen. 2012-06-22 Akim Demaille code_props: factor more. * src/symtab.h, src/symtab.c (code_props_type_string): No longer static. * src/output.c (CODE_PROPS): Remove, we can now iterate on both the destructor and the printer. (SET_KEY2): New. 2012-06-22 Victor Santet maint: factor the handling of %printer and %destructor There is too much code duplication between %printer and %destructor. We used to have two functions for each action: the first one for destructors, the second one for printers. Factor using a 'code_props_type', and an array of code_props instead of two members. * src/symlist.h, src/symlist.c (symbol_list_destructor_set) (symbol_list_printer_set): Fuse into... (symbol_list_code_props_set): this. * src/symtab.h, src/symtab.c (default_tagged_destructor) (default_tagged_printer): Fuse into... (default_tagged_code_props): this. (default_tagless_destructor, default_tagless_printer) (default_tagless_code_props): Likewise. (code_props_type_string): new. (symbol_destructor_set, symbol_destructor_get, semantic_type_destructor_set) (default_tagged_destructor_set, default_tagless_destructor_set) (symbol_printer_set, symbol_printer_get, semantic_type_printer_set) (default_tagged_printer_set, default_tagless_printer_set): Replace by... (symbol_code_props_set, symbol_code_props_get, semantic_type_code_props_set) (default_tagged_code_props_set, default_tagless_code_props_set): these. * src/parse-gram.y (grammar_declaration): Adjust. * src/output.c (CODE_PROP, grammar_declaration): Ditto. * src/reader.c (symbol_should_be_used): Ditto. 2012-06-22 Akim Demaille tests: more uniformity. * tests/local.at (AT_LEX_FORMALS, AT_LEX_ARGS, AT_LEX_PRE_FORMALS) (AT_LEX_PRE_ARGS): Rename as... (AT_YYLEX_FORMALS, AT_YYLEX_ARGS, AT_YYLEX_PRE_FORMALS) (AT_YYLEX_PRE_ARGS): these, for consistency. (AT_API_PREFIX): Take %name-prefix into account. (AT_YYLEX_PROTOTYPE): New. Use it. * tests/actions.at, tests/calc.at, tests/cxx-type.at: Adjust to use them. 2012-06-22 Akim Demaille tests: handle locations in a more generic way. * tests/local.at (AT_YYERROR_PROTOTYPE): New. Use it. * tests/cxx-type.at: Extensive revamp to use a more traditional quotation scheme, and to use the generic yyerror implementation. Prefer Autotest macros to CPP macros. * tests/java.at: . 2012-06-22 Akim Demaille tests: handle locations in the generic yyerror functions. * tests/local.at (AT_YYERROR_DECLARE_EXTERN, AT_YYERROR_DECLARE) (AT_YYERROR_DEFINE): Handle locations for C and C++. * tests/calc.at: Use it for C++ (as C has extra arguments which are not yet handled by AT_BISON_OPTION_PUSHDEFS). * tests/actions.at: Adjust. 2012-06-22 Akim Demaille tests: fix AT_CHECK_CALC. * tests/calc.at (AT_CHECK_CALC): Contrary to its documentation, the test was skipped if given a second argument. Unused feature, remove it. 2012-06-22 Akim Demaille tests: improve infrastructure * tests/local.at (AT_LANG): Use c++ instead of cxx for C++. Adjust dependencies. (AT_YYERROR_DECLARE_EXTERN, AT_YYERROR_DECLARE): Issue nothing for C++/Java. (AT_YYERROR_DEFINE): Use m4_case. (AT_JAVA_COMPILE): Use AT_SKIP_IF. 2012-06-21 Akim Demaille tests: factor. * tests/glr-regression.at, tests/output.at, tests/push.at, * tests/regression.at, tests/torture.at, tests/actions.at: Use AT_YYLEX_* and AT_YYERROR_*. 2012-06-21 Akim Demaille skeletons: minor style changes * data/glr.c, data/yacc.c: here. 2012-06-21 Akim Demaille tests: AT_LANG. * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Define/undefine AT_LANGE (AT_LANG_COMPILE): New. (AT_FULL_COMPILE): Use AT_LANG. 2012-06-21 Victor Santet symtab: refactoring Prepares forthcoming changes. * src/symtab.c (symbols_do): Accept the hash table and the sorted list as arguments. Adjust dependencies. 2012-06-21 Akim Demaille maint: address syntax-check issues. * examples/calc++/local.mk: Space changes. * src/files.c: Avoid unmarked_diagnostics. * src/output.c: Remove useless include. 2012-06-21 Akim Demaille c skeletons: factor the declaration of yylloc and yylval. There is one difference: now, even without --defines, we generate extern declarations for these variables. The factoring is worth it. * data/c.m4 (b4_declare_yylstype): Declare them. * data/glr.c, data/yacc.c: Adjust. 2012-06-21 Akim Demaille news: condemn YYPARSE_PARAM and YYLEX_PARAM. * NEWS: here. (Bison 1.875): Add %parse-param and %lex-param. * doc/bison.texinfo: Spello. 2012-06-20 Akim Demaille fix warnings for useless %printer/%destructor The previous commit, which turns into a warning what used to be an error: %printer {} foo; %% exp: '0'; has two shortcomings: the warning is way too long (foo is reported to be useless later), and besides, it also turns into a warning much more serious errors: %printer {} foo; %% exp: foo; Reduce the amount to warnings in the first case, restore the error in the second. * src/symtab.h (status): Add a new inital state: undeclared. * src/symtab.c (symbol_new): Initialize to undeclared. (symbol_class_set): Simplify the logic of the code that neutralize the "redeclared" warning after the "redefined" one. (symbol_check_defined): "undeclared" is also an error. * src/reader.c (grammar_current_rule_symbol_append): Symbols appearing in a rule are "needed". * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set): An unknown symbol appearing in a %printer/%destructor is "used". * src/reduce.c (nonterminals_reduce): Do not report as "useless" symbols that are not used (e.g., those that for instance appeared only in a %printer). * tests/input.at (Undeclared symbols used for a printer or destructor): Improve the cover the cases described above. 2012-06-20 Akim Demaille gitignore: test-driver. 2012-06-20 Akim Demaille maint: style changes. * src/reduce.c (reduce_grammar_tables): Define variables with their initial value. 2012-06-20 Akim Demaille news: fixes. * NEWS: Fix spelling. 2012-06-20 Victor Santet warnings: used but undeclared symbols are warnings We used to raise an error if a symbol appears only in a %printer or %destructor. Make it a warning. * src/symtab.h (status): New enum. (symbol): Replace the binary "declared" with the three-state "status". Adjust dependencies. * src/symtab.c (symbol_check_defined): Needed symbols are an error, whereas "used" are simply warnings. * src/symlist.c (symbol_list_destructor_set, symbol_list_printer): Set symbol status to 'used' when associated to destructors or printers. * input.at (Undeclared symbols used for a printer or destructor): New. 2012-06-20 Akim Demaille maint: regen. * Makefile.am (regen): New target. 2012-06-20 Akim Demaille regen. 2012-06-20 Akim Demaille maint: regen. * Makefile.am (regen): New target. 2012-06-19 Akim Demaille tests: enhance AT_YYERROR_DEFINE. * tests/local.at: Handle the fact that locations are no longer needed with lalr1.cc. 2012-06-19 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: maint: formatting changes. tests: support api.prefix. tests: pacify font-lock-mode. tests: remove test covered elsewhere. tests: factor the declaration/definition of yyerror and yylex. regen. tests: portability issues. tests: call the parser from another compilation unit. glr.c, yacc.c: declare yydebug in the header. skeletons: use header guards. tests: improve AT_FULL_COMPILE. tests: reorder. tests: strengthen the test on generated headers inclusion yacc.c: instead of duplicating y.tab.h inside y.tac.c, include it. yacc.c: factor. 2012-06-19 Akim Demaille maint: formatting changes. * NEWS: Fix indentation of code snippets. Untabify. 2012-06-17 Akim Demaille tests: support api.prefix. * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Define AT_API_PREFIX. (AT_YYERROR_DEFINE, AT_YYERROR_DECLARE_EXTERN, AT_YYLEX_DECLARE_EXTERN) (AT_YYLEX_DEFINE): Use it. * tests/input.at, tests/regression.at, tests/torture.at: Add AT_BISON_OPTION_PUSHDEFS/POPDEFS. 2012-06-17 Akim Demaille tests: pacify font-lock-mode. * tests/local.at: here. 2012-06-17 Akim Demaille tests: remove test covered elsewhere. * tests/headers.at (%union and --defines): Remove, pretty useless and insignificant. 2012-06-17 Akim Demaille tests: factor the declaration/definition of yyerror and yylex. * tests/local.at (AT_YYERROR_DECLARE, AT_YYERROR_DECLARE_EXTERN) (AT_YYERROR_DEFINE, AT_YYLEX_DECLARE, AT_YYLEX_DECLARE_EXTERN) (AT_YYLEX_DEFINE): New. Must be used inside AT_BISON_OPTION_PUSHDEFS/POPDEFS pair. * tests/actions.at, tests/conflicts.at, tests/glr-regression.at, * tests/headers.at, tests/input.at, tests/named-refs.at, * tests/regression.at, tests/skeletons.at, tests/synclines.at, * tests/torture.at: Use them. 2012-06-17 Akim Demaille regen. 2012-06-17 Akim Demaille tests: portability issues. * tests/calc.at (AT_CALC_MAIN): Missing include reported by Hydra. 2012-06-15 Akim Demaille tests: call the parser from another compilation unit. In order to improve the testing of %defines, which exports the interface of the generated parser, change the calc.at tests so that when %defines is passed, main will be in another compilation unit. It loads the generated header. * tests/calc.at (AT_CALC_MAIN): New. Includes the definition of the global variables. Therefore, now declare them from the %requires section of the parser. Adjust to yydebug and yyparse being renamed by %name-prefix. 2012-06-15 Akim Demaille glr.c, yacc.c: declare yydebug in the header. * data/c.m4 (b4_declare_yydebug): New. * data/glr.c, data/yacc.c (b4_shared_declarations): Use it. Remove the corresponding code from the parser body. * NEWS: Doc this. 2012-06-15 Akim Demaille skeletons: use header guards. * data/glr.c, data/glr.cc, data/yacc.c: here. * NEWS: Document it. 2012-06-15 Akim Demaille tests: improve AT_FULL_COMPILE. * tests/local.at: Accept a third argument. Simplify quotation pattern. Calls for better refactoring, but will suffice for a while. 2012-06-15 Akim Demaille tests: reorder. * tests/calc.at (power): Move its definition, as a preparation for forthcoming changes. And space changes. 2012-06-15 Akim Demaille tests: strengthen the test on generated headers inclusion * tests/headers.at (AT_TEST_CPP_GUARD_H): Accept Bison directives. (Invalid CPP headers): Check glr. 2012-06-15 Akim Demaille yacc.c: instead of duplicating y.tab.h inside y.tac.c, include it. This is already what glr.c and lalr1.cc do. * data/yacc.c: here. 2012-06-15 Akim Demaille maint: xfdopen, and scope reduction. * src/files.h, src/files.c (xfdopen): New. * src/output.c (output_skeleton): Use it. Reduce the scope of argv. 2012-06-15 Akim Demaille maint: space changes * configure.ac, src/complain.c: space changes. 2012-06-13 Akim Demaille yacc.c: factor. yacc.c used to include two almost identical sections: one for the *.h file, and another for the *.c file. The main difference is that in the *.c file we used the yy* names (as %name-prefix is handled by "#define yy* *" before), while the *.hh used * names. Keep only the later. If this is troublesome, b4_shared_declarations can easily take the desired prefix as argument. * data/yacc.c (b4_shared_declarations): New. Use it to factor duplicated declarations. 2012-06-13 Stefano Lattarini (tiny change) cosmetics: prettify names for compiled object for bison * src/local.mk (src_bison_SHORTNAME): Define to "bison". 2012-06-13 Akim Demaille lalr1.cc: spello. * data/lalr1.cc: Reported by Gilles Espinasse. 2012-06-13 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: skeletons: factor yacc.c and glr.c. glr.c: minor refactoring. tests: remove all the -On flags. maint: fix spello. maint: improve release procedure instructions. gnulib: update readme-release. maint: cfg.mk: manual title. maint: cfg.mk: simplify maint: post-release administrivia 2012-06-12 Akim Demaille skeletons: factor yacc.c and glr.c. yacc.c and glr.c share common declarations. Their YYLTYPE are exactly equal, and their YYSTYPE are sufficiently alike to be fused (its declaration was protected by YYSTYPE_IS_DECLARED in yacc.c, but not in glr.c). Besides, yacc.c duplicated the definitions of YYLTYPE and YYSTYPE (*.h/*.c). * data/c.m4 (b4_declare_yylstype): New. * data/yacc.c, data/glr.c: Use it. 2012-06-12 Akim Demaille glr.c: minor refactoring. * data/glr.c (b4_shared_declarations): Move from the generated file section, to the M4 prologue. 2012-06-12 Akim Demaille tests: remove all the -On flags. * tests/atlocal.in: Here. Reported by Gilles Espinasse. 2012-06-12 Akim Demaille maint: fix spello. * README-hacking: Here. * THANKS: Reported by Gilles Espinasse. 2012-06-12 Akim Demaille maint: improve release procedure instructions. * gnulib: Update, in particular (README-release). * bootstrap.conf: don't require gendocs, provided by gnu-web-doc-update, provided by readme-release. * README-hacking: Update accordingly. 2012-06-07 Akim Demaille gnulib: update readme-release. * gnulib (readme-release): Now includes the modules it promotes. * bootstrap.conf: Simplify accordingly. 2012-06-07 Akim Demaille maint: cfg.mk: manual title. * cfg.mk (manuel_title): New. 2012-06-07 Akim Demaille maint: cfg.mk: simplify * cfg.mk: Remove bits provided by maint.mk. 2012-06-07 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-06-05 Akim Demaille maint: an envvar equal to "00" is 0. * src/output.c (prepare): here. Reported by Paul Eggert. 2012-06-05 Akim Demaille maint: don't use mbsr?chr. Basically, revert ba60c39547a445dee3e07920931b4d7a81843868's move to mbs* functions, which was prompted by -DGNULIB_POSIXCHECK. See and following. * bootstrap.conf: No longer ask for them. * src/files.c, src/getargs.c, src/location.c, * src/parse-gram.c, src/parse-gram.y, src/scan-gram.l, * src/symtab.c: s/mbs(r?chr)/str$1/g. 2012-06-05 Akim Demaille maint: use xconcat-filename. * bootstrap.conf (gnulib_modules): Request it. * src/output.h, src/output.c (compute_pkgdatadir): Rename as... (pkgdatadir): this. Adjust dependencies. * src/output.c (output_skeleton): Reduce the scope of "in". Use xconcatenated_filename to simplify the construction of the qualified paths to m4sugar.m4, bison.m4, and the selected skeleton. There are a few minor differences: the new code uses strchr instead of mbschr (but this was not really justified), and the new code does not garantee a single slash even if $BISON_PKGDATADIR ends with several (which was considered more accurate). See the discussion at . 2012-06-05 Akim Demaille maint: minor simplification * src/output.c (prepare): Assign use_push_for_pull_flag's value at its declaration. 2012-06-05 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: version 2.5.1 NEWS: prepare for 2.5.1. maint: update release procedure maint: fix comment typos maint: post-release administrivia 2012-06-05 Akim Demaille version 2.5.1 * NEWS: Record release date. 2012-06-05 Akim Demaille NEWS: prepare for 2.5.1. * NEWS: Be compliant with do-release-commit-and-tag. 2012-06-05 Akim Demaille maint: update release procedure * bootstrap.conf: Request do-release-commit-and-tag and readme-release. * README-hacking: Adjust. 2012-06-05 Jim Meyering maint: fix comment typos Using http://github.com/lyda/misspell-check, massage its output into sed commands to perform the suggested changes. Initially, I filtered out the THRU->Through changes, because that failed to retain capitalization in the grammar token. Instead, do this manually, beforehand: sed -i s/THRU/THROUGH/ tests/existing.at git ls-files|misspellings -f -|perl -nl \ -e '/^(.*?)\[(\d+)\]: (\w+) -> "(.*?)"$/ or next;' \ -e '($file,$n,$l,$r)=($1,$2,$3,$4); $q="'\''"; $r=~s/$q/$q\\$q$q/g;'\ -e 'print "sed -i $q${n}s!$l!$r!$q $file"'|bash 2012-05-24 Akim Demaille build: regen. 2012-05-24 Akim Demaille Merge tag 'v2.5.1_rc2' Bison 2.5.1_rc2. * tag 'v2.5.1_rc2': (34 commits) Bison 2.5.1_rc2. doc: fixes. build: fix ChangeLog generation. c++: compute the header guards. skeletons: remove support for unused directive. lalr1.cc: improve Doxygen documentation. lalr1.cc: extract stack.hh. news: convert to double quotes. space changes. build: do not prototype flex-generated functions. build: fix ChangeLog generation. Bison 2.5.1_rc1. tests: save/restore Autotest special files when checking XML support. tests: AT_SAVE_SPECIAL_FILES / AT_RESTORE_SPECIAL_FILES. tests: honor TESTSUITEFLAGS in all the check targets. build: do not enable c++ warnings on 0 when nullptr is not supported. maint: update gnulib. build: config.in.h. build: move silent rules. glr.c: reduce variable scopes. maint: maintainer-release-check. maint: shush a syntax-check. maint: prefer "commit message" to "log entry". command line: fix minor leaks. maint: we no longer maintain the ChangeLog. maint: fix the generation of the synclines for bison's parser. maint: regen. maint: import the xmemdup0 gnulib module. maint: remove left-over gnulib modules. maint: ignore files imported by autopoint. build: AC_PROG_LEX: use more readable variable names. maint: regen src/parse-gram.[ch] maint: simplify parse-gram.y maint: s/strncpy/memcpy/, when equivalent 2012-05-23 Akim Demaille maint: post-release administrivia * NEWS: Add header line for next release. * .prev-version: Record previous version. * cfg.mk (old_NEWS_hash): Auto-update. 2012-05-23 Akim Demaille Bison 2.5.1_rc2. * NEWS: Update. 2012-05-23 Akim Demaille doc: fixes. * doc/bison.texinfo: Fix errors spotted by syntax-check. 2012-05-23 Akim Demaille build: fix ChangeLog generation. * gnulib: Update to get newest gitlog-to-changelog. * bootstrap: Update. * Makefile.am (gen-ChangeLog): Fix for Bison's git log style. 2012-05-21 Akim Demaille c++: compute the header guards. This is a frequent request. Recently pointed out by Wei Song, . * data/c.m4 (b4_tocpp, b4_cpp_guard, b4_cpp_guard_open) (b4_cpp_guard_close): New. * data/lalr1.cc, data/location.cc, data/stack.hh: Use them. * TODO (Header Guards): Move to... * NEWS: here. Formatting changes. 2012-05-21 Akim Demaille skeletons: remove support for unused directive. * src/scan-skel.l (@dir_prefix@): Remove support, has never been used, not even in the commit that introduced it, 2b81e969ea04c1a6502928ba7e847ec8ff7dcb2f. 2012-05-21 Akim Demaille lalr1.cc: improve Doxygen documentation. * data/location.cc: Qualify file names with directory name. 2012-05-21 Akim Demaille lalr1.cc: extract stack.hh. See commit 51bacae6b58fd5c6cce861f00440dc917384625e. * data/stack.hh: New, extracted from... * data/lalr1.cc: here. * data/Makefile.am: Adjust. 2012-05-21 Akim Demaille news: convert to double quotes. * NEWS: Convert from `quoted' to "quoted". Reported by Stefano Lattarini. http://lists.gnu.org/archive/html/bison-patches/2012-05/msg00039.html 2012-05-21 Akim Demaille space changes. * src/flex-scanner.h: Indent nested cpp directives. 2012-05-21 Akim Demaille build: do not prototype flex-generated functions. Some versions of Flex, possibly modified by the distribution package maintainers, have incompatible signatures. Since newer versions of Flex prototype their functions, avoid the conflicts in that case. Reported by Stefano Lattarini. . * src/flex-scanner.h (FLEX_VERSION_GT): New. Use it to issue prototypes for flex-generated functions only for versions up to 2.5.31, in accordance with the comment. See commit dc9701e848f27ae64b6ddcf809580998667d60f2. Use it to define yylex_destroy when needed. 2012-05-16 Akim Demaille build: fix ChangeLog generation. * Makefile.am (gen-ChangeLog): Fix for VPATH builds. 2012-05-14 Akim Demaille Bison 2.5.1_rc1. * NEWS: Update. * src/parse-gram.c, src/parse-gram.h: Regen. 2012-05-11 Akim Demaille tests: save/restore Autotest special files when checking XML support. Currently the test 248, "parse-gram.y: LALR = IELR", fails BISON_TEST_XML is set. * tests/local.at (AT_BISON_CHECK_XML): Belt: Save/restore files. * tests/regression.at (parse-gram.y: LALR = IELR): Suspenders: Don't rely on expout. Each one of these changes suffices. 2012-05-11 Akim Demaille tests: AT_SAVE_SPECIAL_FILES / AT_RESTORE_SPECIAL_FILES. Some of our macros play with expout and other Autotest special files, which may break their callers (e.g., currently TESTSUITEFLAGS='248 BISON_TEST_XML=1' fails). There is already some support for this. Expand it to be ready to use it elsewhere. * tests/local.at (AT_RESTORE_SPECIAL_FILES, AT_SAVE_SPECIAL_FILES) (at_save_special_files, at_restore_special_files): New. (AT_BISON_CHECK_NO_XML): Use them. 2012-05-11 Akim Demaille tests: honor TESTSUITEFLAGS in all the check targets. * tests/Makefile.am (installcheck-local): Simplify. (maintainer-check-posix, maintainer-check-valgrind): Honor $(TESTSUITEFLAGS). 2012-05-11 Akim Demaille build: do not enable c++ warnings on 0 when nullptr is not supported. * configure.ac (WARN_CXXFLAGS): Enable -Wzero-as-null-pointer-constant only when nullptr is supported.. 2012-05-11 Akim Demaille maint: update gnulib. * bootstrap, gnulib: Update. 2012-05-09 Akim Demaille build: config.in.h. Historically we used config.hin (where everybody else used config.h.in) to please DOS. Now that we use gnulib, there are already tons of files with several dots, especially *.in.h. * configure.ac: Rename config.hin as config.in.h. 2012-05-09 Akim Demaille build: move silent rules. * tests/Makefile.am: In the generation of the test suite. 2012-05-09 Akim Demaille glr.c: reduce variable scopes. * data/glr.c: Where appropriate, fuse variable declarations followed by assignments by variable declarations with a value. Where appropriate, introduce new scopes to limit variable spans. 2012-05-08 Akim Demaille maint: maintainer-release-check. * tests/Makefile.am (maintainer-release-check): New. * Makefile.am (MAINTAINER_CHECKS): New. Support maintainer-release-check. * README-hacking: Document it, and syntax-check too. 2012-05-08 Akim Demaille maint: shush a syntax-check. * cfg.mk: lib/timevar is not planned to be gnulib'ed, as it comes from GCC. 2012-05-08 Akim Demaille maint: prefer "commit message" to "log entry". * README-hacking: here. Suggested by Stefano Lattarini. 2012-05-08 Akim Demaille command line: fix minor leaks. * src/getargs.c (getargs): Free pointers before allocating them new content. 2012-05-08 Akim Demaille maint: we no longer maintain the ChangeLog. * .gitattributes: No need to merge it. * README-hacking: Update release instructions. 2012-05-06 Akim Demaille maint: fix the generation of the synclines for bison's parser. * tests/bison.in: Import from master the changes that make this script generate synclines that are independant of the builddir/srcdir user's set up. 2012-05-06 Akim Demaille maint: regen. * src/parse-gram.c, src/parse-gram.h: Regen. 2012-05-06 Akim Demaille maint: import the xmemdup0 gnulib module. * bootstrap.conf: Require this module. * src/parse-gram.y: Include xmemdup0.h. 2012-05-06 Akim Demaille maint: remove left-over gnulib modules. * bootstrap.conf (gnulib_modules): Remove pipe-posix. * lib/.gitignore, m4/.gitignore: Remove files that we no longer use. 2012-05-06 Akim Demaille maint: ignore files imported by autopoint. * m4/.gitignore: here. 2012-05-06 Akim Demaille build: AC_PROG_LEX: use more readable variable names. * m4/flex.m4 (AC_PROG_LEX): Prefer LEX_IS_FLEX to FLEX. Prefer true/false to yes/no for such variables. * configure.ac: Adjust. 2012-05-06 Jim Meyering maint: regen src/parse-gram.[ch] 2012-05-06 Jim Meyering Akim Demaille maint: simplify parse-gram.y * src/parse-gram.y (add_param): Use xmemdup0 in place of xmalloc+memcpy, and strspn in place of an open-coded loop. 2012-05-06 Jim Meyering maint: s/strncpy/memcpy/, when equivalent * src/output.c (output_skeleton): Use memcpy, not strncpy, since the source is known to fit in the destination buffer. * src/parse-gram.y (%skeleton): Likewise. 2012-05-04 Akim Demaille glr.c: formatting changes. * data/glr.c: Fix indentation. 2012-05-04 Akim Demaille Merge remote-tracking branch 'origin/master' * origin/master: glr.c: untabify. glr.cc: untabify. glr.cc: formatting changes. glr.cc: remove unused signature. glr.cc: properly declare locations are const where appropriate. doc: fix @xref. 2012-05-04 Akim Demaille glr.c: untabify. * data/glr.c: here. 2012-05-04 Akim Demaille glr.cc: untabify. * data/glr.cc: here. 2012-05-04 Akim Demaille glr.cc: formatting changes. * data/glr.cc: Fit in 80 columns. 2012-05-04 Akim Demaille glr.cc: remove unused signature. * data/glr.cc (yydestruct_): Not used, remove. It is yydestruct which is used. 2012-05-04 Akim Demaille glr.cc: properly declare locations are const where appropriate. * data/glr.cc (yyerror): The location is const. 2012-05-04 Akim Demaille doc: fix @xref. * doc/bison.texinfo: here. 2012-05-04 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: (22 commits) tests: ignore code coverage/profiling failure messages doc: fix some invalid @ref. build: fix previous commit. install-pdf: fix. NEWS: Update. %printer: support both yyo and yyoutput. doc: mfcalc: demonstrate %printer. tests: style changes. build: require Flex. build: flex.m4: check for Flex. build: flex.m4: quote properly. build: flex.m4. build: autoconf: update. glr: eliminate last bits of unwanted locations. NEWS: 2.6 will drop K&R. TODO: remove dead items. TODO: import from master. gnulib: update. maint: update NEWS. doc: fix index. doc: fix documentation of YYERROR. c++: more YY_NULL 2012-05-02 Akim Demaille tests: ignore code coverage/profiling failure messages The Hydra buildfarm provides code coverage analysis. For some reason, in some test cases, code coverage data seem to be incompatible, and generate error messages at parser run-time. Ignore these messages so that (i) these tests do pass, (ii) coverage results be provided by Hydra. * tests/local.at (AT_PARSER_CHECK): Ignore messages for failed merges of code coverage/profiling results. 2012-04-16 Akim Demaille doc: fix some invalid @ref. * doc/bison.texinfo: Fix incorrect @ref uses. 2012-04-16 Akim Demaille build: fix previous commit. * bootstrap: Update from gnulib. 2012-04-16 Akim Demaille install-pdf: fix. * gnulib: Fix install-pdf in po/ and runtime-po/. Reported by Hans Aberg. Fixed by Joel E. Denny. http://lists.gnu.org/archive/html/bug-bison/2011-05/msg00008.html 2012-04-16 Akim Demaille NEWS: Update. * NEWS: Spell check. (%printer): is now documented. 2012-04-16 Akim Demaille %printer: support both yyo and yyoutput. lalr1.cc used to support yyo, but not yyoutput. Support both, but document only yyoutput (at least until there is some consensus on this). * data/c.m4 (yy_symbol_value_print): Also support yyo. * data/glr.cc (yy_symbol_value_print_): Support both yyo and yyoutput. * data/lalr1.cc: Also support yyoutput. * doc/bison.texinfo: Explicitly use yyoutput in the examples. * examples/mfcalc/mfcalc.test: Test the -p option. 2012-04-16 Akim Demaille doc: mfcalc: demonstrate %printer. * doc/bison.texinfo (Printer Decl): New. Number mfcalc.y snippets so that they are output in the proper order. (The mfcalc Main): Use yydebug. (Debugging): Simplify the text. (Enabling Traces, Mfcalc Traces, The YYPRINT Macro): New. (Table of Symbols): Document YYPRINT and YYFPRINTF. 2012-04-16 Akim Demaille tests: style changes. * tests/input.at: Use "print" in %printer instead of "destroy". It is unused, so we don't care, yet it is less surprising. * tests/actions.at: Comment changes. 2012-04-16 Akim Demaille %printer: support both yyo and yyoutput. lalr1.cc used to support yyo, but not yyoutput. Support both, but document only yyoutput (at least until there is some consensus on this). * data/c.m4 (yy_symbol_value_print): Also support yyo. * data/glr.cc (yy_symbol_value_print_): Support both yyo and yyoutput. * data/lalr1.cc: Also support yyoutput. * doc/bison.texinfo: Explicitly use yyoutput in the examples. * examples/mfcalc/mfcalc.test: Test the -p option. 2012-04-16 Akim Demaille doc: mfcalc: demonstrate %printer. * doc/bison.texinfo (Printer Decl): New. Number mfcalc.y snippets so that they are output in the proper order. (The mfcalc Main): Use yydebug. (Debugging): Simplify the text. (Enabling Traces, Mfcalc Traces, The YYPRINT Macro): New. (Table of Symbols): Document YYPRINT and YYFPRINTF. 2012-04-16 Akim Demaille tests: style changes. * tests/input.at: Use "print" in %printer instead of "destroy". It is unused, so we don't care, yet it is less surprising. * tests/actions.at: Comment changes. 2012-04-10 Akim Demaille build: require Flex. * configure.ac: Require Flex. 2012-04-10 Akim Demaille build: flex.m4: check for Flex. * m4/flex.m4 (_AC_PROG_LEX_YYTEXT_DECL): Check that $LEX supports some of the Flex options, and exclusive start conditions. Define FLEX to 'yes'/'', as AC_PROG_CC does for GCC. 2012-04-10 Akim Demaille build: flex.m4: quote properly. * m4/flex.m4: Use quotes more systematically. 2012-04-10 Akim Demaille build: flex.m4. * m4/flex.m4: New. An exact copy of what is in Autoconf currently. 2012-04-10 Akim Demaille build: autoconf: update. * submodules/autoconf: Update. There are no changes in data/m4sugar/foreach.m4, and the changes in data/m4sugar/m4sugar.m4 are minor. 2012-04-10 Akim Demaille glr: eliminate last bits of unwanted locations. * data/glr.c (YYLTYPE): Do not define when locations are not demanded. Adjust all dependencies. 2012-04-10 Akim Demaille NEWS: 2.6 will drop K&R. * NEWS: here. (glr.c): Fix a spello. 2012-04-09 Akim Demaille TODO: remove dead items. * TODO (Documentation, %printer, Java): Remove, already done (or just waiting for approval). (Fortran, BTYacc): Remove, there does not seem to be demand. 2012-04-09 Akim Demaille TODO: import from master. * TODO: Copy the current version. 2012-04-08 Akim Demaille tests: fix bison wrapper. * tests/bison.in (PERL): Fix. 2012-04-08 Akim Demaille doc: fix some invalid @ref. * doc/bison.texinfo: Fix incorrect @ref uses. 2012-04-08 Akim Demaille build: extexi: support out-of-order blocks. * examples/extexi (%file_output): Remove. (&process): Accept "FILE: BLOCK-NUM" requests. 2012-04-08 Akim Demaille build: look for Perl in configure. Bison uses "/usr/bin/perl" or "perl" in several places, and it does not appear to be a problem. But, at least to make it simpler to change PERL on the make command line, check for perl in configure. * configure.ac (PERL): New. * doc/Doxyfile.in, doc/local.mk, examples/local.mk, * tests/bison.in: Use it. 2012-04-08 Akim Demaille maint: rewrite extexi in Perl. * examples/extexi: Rewrite in Perl. * examples/local.mk (extract): Adjust. 2012-04-07 Akim Demaille build: simplify clean. * doc/local.mk (CLEANFILES): Since the previous commit, there a no longer such files. * Makefile.in (CLEANFILES): Initialize here. 2012-04-07 Akim Demaille gnulib: update. * bootstrap.conf (bootstrap_sync): True again. It was disabled while waiting for changes to be integrated in gnulib's bootstrap, which was done long ago. * bootstrap, gnulib: Update. 2012-04-04 Akim Demaille maint: update NEWS. * NEWS: Fix entry about __attribute__. Reorder by "decreasing" order of importance. 2012-04-04 Akim Demaille doc: fix index. http://lists.gnu.org/archive/html/bison-patches/2012-04/msg00006.html * doc/bison.texinfo: Avoid using @def* variant with more than the defined entity as main entity, as it results in an incorrect index. For instance, don't document {return YYERROR;}, which results in a single index entry "return YYERROR;", but rather as typed function whose return type is "type", and whose argument list is ";". 2012-04-04 Akim Demaille doc: fix documentation of YYERROR. * doc/bison.texinfo (Table of Symbols): Fix the documentation of YYERROR by copying that from "Action Features". 2012-04-01 Akim Demaille build: fix distcheck issues. For some reason it seems that texi2dvi -o no longer forces --clean mode, so we have stray TeX compilation files staying in top_builddir since TeX is run from there. While at it, upgrade the generation of the (completely obsolete) reference card. Target PDF. * doc/local.mk (TEXI2DVI): Pass --build-dir. (CLEANDIRS): More accurate. (doc/refcard.dvi): Replace with... (doc/refcard.pdf): this. Adjust dependencies. 2012-04-01 Akim Demaille build: don't rely on $< in non-pattern rules. * doc/local.mk, tests/local.mk: here. Reported by Stefano Lattarini. 2012-04-01 Akim Demaille doc: upgrade Doxyfile. * doc/Doxyfile.in: Run doxygen -u. Prompted by Tim Landscheidt. 2012-04-01 Akim Demaille doc: help Doxygen find our files. * doc/Doxyfile.in (INCLUDE_PATH): here. 2012-04-01 Tim Landscheidt Fix Doxygen generation and clean-up. * doc/Doxyfile.in: Amend OUTPUT_DIRECTORY. * doc/local.mk (html-local): Amend working directory. (CLEANDIRS): Fix "html", remove "latex". 2012-04-01 Tim Landscheidt Fix Doxygen comment. * src/InadequacyList.h: s###. 2012-04-01 Akim Demaille c++: more YY_NULL Caught by maintainer-check-g++. * data/glr.c, data/lalr1.cc, data/yacc.c, tests/cxx-type.at, * tests/glr-regression.at, tests/push.at: When simple to do, avoid expliciting the null ptr. Otherwise use YY_NULL. 2012-04-01 Akim Demaille c++: more YY_NULL Caught by maintainer-check-g++. * data/glr.c, data/lalr1.cc, data/yacc.c, tests/cxx-type.at, * tests/glr-regression.at, tests/push.at: When simple to do, avoid expliciting the null ptr. Otherwise use YY_NULL. 2012-04-01 Akim Demaille Merge remote-tracking branch 'origin/maint' * origin/maint: bump to 2012 in skeletons. build: remove ancient Autoconf tests. doc: c++: complete the location documentation. c++: locations: provide convenience constructors. c++: locations: remove useless "inline". glr: do not use locations when they are not requested c++: use nullptr for C++11. build: simplify and improve the compiler warnings for tests. gnulib: update. maint: formatting changes. NEWS: update. Java: Fix syntax error handling without error token. tests: beware of -pedantic on large #line numbers. tests: when using the C++ compiler, use its flags too. 2012-04-01 Akim Demaille bump to 2012 in skeletons. * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, * data/location.cc, data/yacc.c: Bump copyright year ranges. 2012-04-01 Akim Demaille build: remove ancient Autoconf tests. lib/subpipe.c was removed in 47fa574761319b0a422691223c9b8a9a72f36aa2. * m4/subpipe.m4: Remove. * configure.ac (BISON_PREREQ_SUBPIPE): Remove. 2012-03-31 Akim Demaille doc: c++: complete the location documentation. * data/location.cc (position::initialize, location::initialize): Also accept line and column, with default values. * doc/bison.texinfo (C++ position, C++ location): New nodes. Describe more thoroughly these classes. Fix several Texinfo misuses. 2012-03-31 Akim Demaille c++: locations: provide convenience constructors. * data/location.cc (position::position): Accept file, line and column as arguments with default values. Always qualify initial line and column literals as unsigned. (location::location): Provide convenience constructors. 2012-03-31 Akim Demaille c++: locations: remove useless "inline". * data/location.cc: "inline" is implicit when defining methods in the class definition. 2012-03-31 Akim Demaille glr: do not use locations when they are not requested When the test suite runs with -O2 and warnings enabled, G++ complains of locations being used, but not initialized. The simplest is to not use locations. * data/glr.c (b4_locuser_formals, b4_locuser_args): New. Use them when locations should not be used. Use b4_locations_if where appropriate. (yyuserAction): Modify the order to the arguments to make it more alike the other routines, and to make use of b4_locuser_args simpler. 2012-03-31 Akim Demaille c++: use nullptr for C++11. C++11 introduces "nullptr" which plays the role of C's NULL, in replacement of "0". Fix the C++ skeletons to avoid warnings about uses of "0" in place of "nullptr", and improve C skeletons to also use this "nullptr" when compiled with a C++11 compiler. * configure.ac: More C++ warnings. * NEWS (2.5.1): Document this. * data/c++.m4, data/c.m4 (b4_null_define): New. (b4_null): Use YY_NULL instead of 0. * data/glr.c, data/lalr1.cc, data/location.cc, data/yacc.c: Call b4_null_define/b4_null where appropriate. Use YY_NULL instead of NULL. * data/location.cc (initialize): Accept a default argument, YY_NULL. * tests/actions.at, tests/calc.at: Adjust. * data/glr.c, lib/libiberty.h, src/system.h (__attribute__): Do not disable it when __STRICT_ANSI__ is defined, as, for instance, it disables the __attribute__((unused)) which protects us from some compiler warnings. This was already done elsewhere in Bison, in 2001, see 4a0d89369599a2cea01f4fbdf791f426a02cb5a3. * tests/regression.at: Adjust output. 2012-03-30 Akim Demaille build: simplify and improve the compiler warnings for tests. * configure.ac (warn_common, warn_c, warn_cxx): New. Use them to compute independently the options supported by the C and C++ compilers. Don't AC_SUBST the variables passed to gl_WARN_ADD: it does it for us. (WARN_CFLAGS_TEST, WARN_CXXFLAGS_TEST): Don't aggregate $WARN_CFLAGS and $WARN_CXXFLAGS in them now, leave it to atlocal.in. (O0CFLAGS, O0CXXFLAGS): Move their definition to... * tests/atlocal.in: here. Be more systematic between C and C++. Reorder to factor between variables. Propagate all of the variables when --compile-c-with-cxx. 2012-03-30 Akim Demaille gnulib: update. 2012-03-30 Akim Demaille maint: formatting changes. * src/system.h: Indent CPP directives using cppi. 2012-03-27 Akim Demaille NEWS: update. * NEWS: Java fixes, more about the doc changes, liby issues. 2012-03-27 Tim Landscheidt Java: Fix syntax error handling without error token. * data/lalr1.java (YYParser::parse): Here. * tests/java.at: Add test case. 2012-03-24 Akim Demaille tests: beware of -pedantic on large #line numbers. * tests/local.at (AT_TEST_TABLES_AND_PARSE): Don't pass -pedantic when compiling large canonical-LR parsers. Reported by Tys Lefering. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00025.html 2012-03-24 Akim Demaille tests: when using the C++ compiler, use its flags too. * tests/local.at: Go for colors. (--compile-c-with-cxx): New option. We used to pass "CC=$CXX" as command line argument, but it was not possible to adjust CFLAGS accordingly in atlocal, since it is loaded before assignments on the command line are honored (so that the command line takes precedence). * tests/atlocal.in: Implement it. * tests/local.mk: Use it. 2012-03-24 Akim Demaille tests: style changes in the Makefile. * tests/local.mk: Prefer passing variable assignment by the command line, instead of the environment, so that it is reported in the logs. Prefer single quotes for shell literal strings. 2012-03-24 Akim Demaille tests: beware of -pedantic on large #line numbers. * tests/local.at (AT_TEST_TABLES_AND_PARSE): Don't pass -pedantic when compiling large canonical-LR parsers. Reported by Tys Lefering. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00025.html 2012-03-24 Akim Demaille tests: when using the C++ compiler, use its flags too. * tests/local.at: Go for colors. (--compile-c-with-cxx): New option. We used to pass "CC=$CXX" as command line argument, but it was not possible to adjust CFLAGS accordingly in atlocal, since it is loaded before assignments on the command line are honored (so that the command line takes precedence). * tests/atlocal.in: Implement it. * tests/local.mk: Use it. 2012-03-24 Akim Demaille tests: fix dependencies. * tests/local.mk (check_SCRIPTS): Add atlocal and atconfig so that they are properly updated before running tests. (RUN_TESTSUITE_deps): New. Use it to factor the dependencies of "*-check" targets, especially those that don't bounce to the regular "check-local" target, since then they don't benefit from the proper dependencies (such as atlocal). 2012-03-19 Akim Demaille Merge remote-tracking branch 'fsf/maint' * fsf/maint: (404 commits) doc: update the --verbose report format. doc: spell check. doc: stmt, not stmnt. doc: save width. doc: reformat grammar snippets. doc: use only @example, not @smallexample. doc: style changes. doc: minor fixes to "Understanding" section tests: minor fixes/simplifications tests: be robust to quote style. maint: update gnulib. tests: be robust to POSIXLY_CORRECT being defined. doc: fix environment issues. regen. tests: fix regressions. glr: fix ambiguity reports. doc: stylistic improvements. maint: address sc_prohibit_doubled_word. maint: address sc_prohibit_always-defined_macros. maint: address sc_bindtextdomain, sc_program_name and sc_prohibit_HAVE_MBRTOWC. ... 2012-03-19 Akim Demaille doc: spell fix. * doc/bison.texinfo: here. Reported by Tim Landscheidt. 2012-03-19 Akim Demaille doc: update the --verbose report format. * doc/bison.texinfo (Understanding): Adjust to match the current format. 2012-03-19 Akim Demaille doc: spell check. * doc/bison.texinfo: here. 2012-03-19 Akim Demaille doc: stmt, not stmnt. * doc/bison.texinfo: s/stmnt/stmt/g. This is a much more common abbreviation for "statement". 2012-03-19 Akim Demaille doc: save width. * doc/bison.texinfo (Language and Grammar): Use the same layout for an example in all the versions, i.e., keep as general case what used to be used only for Info. 2012-03-19 Akim Demaille doc: reformat grammar snippets. * doc/bison.texinfo: Convert the grammar examples to use a narrower style. This helps fitting into the @smallbook constraints. http://lists.gnu.org/archive/html/bison-patches/2012-03/msg00011.html 2012-03-19 Akim Demaille doc: use only @example, not @smallexample. * doc/bison.texinfo: Convert all @smallexamples into @examples. Adjust layout where needed. 2012-03-19 Akim Demaille doc: style changes. * doc/bison.texinfo: Avoid line width issues with TeX. Upgrade ancient messages. Move some comments to better looking places. Add more @group. (Mfcalc Symbol Table): Reduce variable scopes. Prefer size_t for sizes. Prefer declarations with an initial value. Fix a @group environment. 2012-03-19 Paul Eggert doc: minor fixes to "Understanding" section * doc/bison.texinfo (Understanding): Minor wording fixes and improvements. Fixes problems reported in . 2012-03-19 Akim Demaille doc: update the --verbose report format. * doc/bison.texinfo (Understanding): Adjust to match the current format. 2012-03-19 Akim Demaille doc: spell check. * doc/bison.texinfo: here. 2012-03-19 Akim Demaille doc: stmt, not stmnt. * doc/bison.texinfo: s/stmnt/stmt/g. This is a much more common abbreviation for "statement". 2012-03-19 Akim Demaille doc: save width. * doc/bison.texinfo (Language and Grammar): Use the same layout for an example in all the versions, i.e., keep as general case what used to be used only for Info. 2012-03-19 Akim Demaille doc: reformat grammar snippets. * doc/bison.texinfo: Convert the grammar examples to use a narrower style. This helps fitting into the @smallbook constraints. http://lists.gnu.org/archive/html/bison-patches/2012-03/msg00011.html 2012-03-19 Akim Demaille doc: use only @example, not @smallexample. * doc/bison.texinfo: Convert all @smallexamples into @examples. Adjust layout where needed. 2012-03-19 Akim Demaille doc: style changes. * doc/bison.texinfo: Avoid line width issues with TeX. Upgrade ancient messages. Move some comments to better looking places. Add more @group. (Mfcalc Symbol Table): Reduce variable scopes. Prefer size_t for sizes. Prefer declarations with an initial value. Fix a @group environment. 2012-03-19 Akim Demaille c.m4: better newline control with b4_parse_param_use. * data/c.m4: Use m4_ifvaln instead of m4_ifval where applicable. (b4_parse_param_use): Switch order between two nested "if"s to avoid useless empty lines. Adjust callers to avoid useless lines. 2012-03-19 Akim Demaille glr.c: remove (broken) support for YYPRINT. YYPRINT uses yytoknum which glr does not define. Since YYPRINT is considered obsolete, and did not work, don't fix its support, remove it from glr.c. * data/c.m4 (yy_symbol_value_print): Use YYPRINT only for yacc.c. * TODO: Done. 2012-03-17 Paul Eggert doc: minor fixes to "Understanding" section * doc/bison.texinfo (Understanding): Minor wording fixes and improvements. Fixes problems reported in . 2012-03-15 Akim Demaille TODO: update. 2012-03-15 Akim Demaille gnulib: update. 2012-03-13 Akim Demaille tests: minor fixes/simplifications * tests/local.at (AT_BISON_CHECK_NO_XML): Simplify sed programs, quotation, and default value assignments. Ensure a proper value to the numeric variables. Reported by Lie Yan. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00000.html 2012-03-13 Akim Demaille maint: fix distcheck. * examples/local.mk (MAINTAINERCLEANFILES): Complete, and rename as... (CLEANFILES): this, * examples/calc++/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk (CLEANFILES): Add the generated files. 2012-03-13 Akim Demaille tests: minor fixes/simplifications * tests/local.at (AT_BISON_CHECK_NO_XML): Simplify sed programs, quotation, and default value assignments. Ensure a proper value to the numeric variables. Reported by Lie Yan. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00000.html 2012-03-09 Akim Demaille tests: be robust to POSIXLY_CORRECT being defined. * tests/local.at (AT_BISON_CHECK_NO_XML): Check if POSIXLY_CORRECT is defined, not if it is defined to 1. Reported by Lie Yan. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00000.html 2012-03-09 Akim Demaille tests: be robust to quote style. See . * src/main.c (main): Define the quoting style we use. * tests/atlocal.in: Use ASCII style quotes during the tests. 2012-03-09 Akim Demaille maint: update gnulib. * gnulib: update. * src/scan-gram.l: Don't use the (former version of) STREQ. 2012-03-09 Akim Demaille tests: remove quote magic from the bison test wrapper. Basically, revert 4c4d35394d1bdb4dc3392482ab002bc111a3378f. * tests/bison.in: Leave bison's stderr as is. 2012-03-09 Akim Demaille tests: be robust to quote style. See . * src/main.c (main): Define the quoting style we use. * tests/atlocal.in: Use ASCII style quotes during the tests. 2012-03-09 Akim Demaille avoid direct strncmp calls. Before this change, bison would accept either .tab and _tab equivalently, whatever the current platform. Besides, it was not obeying everywhere to the possible definition of TAB_EXT to something else than .tab. For consistency, handle only TAB_EXT (".tab" on non DJGPP platforms). Support for "_tab" is neither documented, nor tested. * src/system.h (STRNCMP_LIT): New. From Jim Meyering. (STRPREFIX_LIT): New. * src/files.c, src/getargs.c: Use it. 2012-03-06 Akim Demaille tests: be robust to POSIXLY_CORRECT being defined. * tests/local.at (AT_BISON_CHECK_NO_XML): Check if POSIXLY_CORRECT is defined, not if it is defined to 1. Reported by Lie Yan. http://lists.gnu.org/archive/html/bug-bison/2012-03/msg00000.html 2012-02-24 Akim Demaille build: comment changes. * Makefile.am, examples/calc++/local.mk, examples/local.mk, * examples/mfcalc/local.mk, examples/rpcalc/local.mk, * lib/local.mk, src/local.mk, tests/local.mk: Make the copyright licenses more uniform. 2012-02-24 Akim Demaille build: fix more example extraction issues. * Makefile.am (dist_TESTS): New. (TESTS, EXTRA_DIST): Run and ship them. * examples/calc++/local.mk: examples/calc++/calc++.stamp no longer exists, don't try to ship it. (.yy.stamp): New recipe. Use it. * examples/calc++/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk: Don't ship the sources. Adjust the CPPFLAGS: there is nothing left in srcdir. (MAINTAINERCLEANFILES): Remove, now we are in builddir. (TESTS): Rename as... (dist_TESTS): this. 2012-02-24 Akim Demaille maint: fix example extraction issues. calc++: don't rely on Automake to compile a C++ parser. Basically, revert commit 609b3d8096fb0cc1fa4d908b6e1a860ced260bda, Automake 1.11.3 is not safe enough for C++ parser. * examples/calc++/calc++-parser.hh: Remove. * examples/calc++/local.mk (examples/calc++/calc++-parser.stamp): New. examples: factor the extractions into a single step extexi had to be run in the extraction directory. Now, it can be given the files with expected output directory. This allows to use $(*_extracted) variables (before we had to list again their members, but limited to their base names). In turn, this also allows fusing the extraction recipes into a single one. Also, it is currently too hard (or requires too much duplication, since Make wants all the occurrences of the files to be prefixed with $(srcdir)/, which is something Automake cannot support for *_SOURCES) to work in the source tree. So extract, and compile scanners and parsers in the build tree. * examples/extexi (basename): New. (BEGIN): Now "file_wanted" maps base name to extracted file name. * examples/calc++/local.mk, examples/mfcalc/local.mk, * examples/rpcalc/local.mk: Fuse extraction rules into... * examples/local.mk: Here. (extract, extracted): New. 2012-02-23 Akim Demaille maint: use STREQ/STRNEQ. * doc/bison.texinfo: Space change. * src/system.h (STREQ, STRNEQ): New. * src/files.c, src/ielr.c, src/lalr.c, src/muscle-tab.c, * src/output.c, src/print.c, src/print_graph.c, * src/reader.c, src/scan-skel.l, src/tables.c, * src/uniqstr.c: Use them. * src/scan-gram.l: Do not use streq.h, use system.h's STREQ. * cfg.mk: The documentation is an exception. 2012-02-23 Akim Demaille doc: fix environment issues. * doc/bison.texinfo: Do not use @verbatim, in particular when we use @group inside. Use @quotation instead of @display for frequently asked questions, it looks much nicer. 2012-02-23 Akim Demaille doc: fix environment issues. * doc/bison.texinfo: Do not use @verbatim, in particular when we use @group inside. Use @quotation instead of @display for frequently asked questions, it looks much nicer. 2012-02-23 Akim Demaille regen. * src/parse-gram.h, src/parse-gram.c: regen. 2012-02-23 Akim Demaille tests: fix regressions. Exit status 63 is documented for version-mismatch. * bootstrap.conf (gnulib_modules): Remove sysexits. * src/system.h (EX_MISMATCH): Define. * src/parse-gram.y (version_check): Use it instead of EX_CONFIG. Missing includes. * tests/calc.at, tests/named-refs.at: Include assert.h. 2012-02-22 Akim Demaille maint: gitignore. * examples/mfcalc/.gitignore, examples/rpcalc/.gitignore: Fix. 2012-02-21 Akim Demaille regen. * src/parse-gram.c, src/parse-gram.h: regen. 2012-02-21 Akim Demaille tests: fix regressions. Exit status 63 is documented for version-mismatch. * bootstrap.conf (gnulib_modules): Remove sysexits. * src/system.h (EX_MISMATCH): Define. * src/parse-gram.y (version_check): Use it instead of EX_CONFIG. Missing includes. * tests/calc.at, tests/named-refs.at: Include assert.h. 2012-02-21 Akim Demaille tests: post-process stderr to normalize quotes. * tests/bison.in: Save bison's stderr, and convert gettextized quotes to plain ASCII. 2012-02-21 Akim Demaille glr: fix ambiguity reports. * tests/glr-regression.at (Ambiguity reports): New. 2012-02-21 Akim Demaille glr: fix ambiguity reports. Fix a regression introduced in commit 783aa653f4ca70a75919c8516b950494c612cbfe. * tests/glr-regression.at (Ambiguity reports): New. * data/glr.c (yyreportTree): Fix an offset error. 2012-02-19 Akim Demaille doc: stylistic improvements. * doc/bison.texinfo: Prefer "continue" to empty loop bodies. Add some @group/@end group to avoid poor page breaks. 2012-02-19 Akim Demaille maint: address sc_prohibit_doubled_word. * data/yacc.c, doc/bison.texinfo: Reword to avoid having to disable that check. * cfg.mk: No longer skip this test. 2012-02-19 Akim Demaille maint: address sc_prohibit_always-defined_macros. * cfg.mk: No longer skip it, except where EXIT_SUCCESS is used as a witness for stdlib.h. Skip this test when appropriate. * data/yacc.c: Drop a note about why EXIT_SUCCESS is defined here. 2012-02-19 Akim Demaille maint: address sc_bindtextdomain, sc_program_name and sc_prohibit_HAVE_MBRTOWC. * bootstrap.conf (gnulib_modules): Require progname. * src/complain.c, src/getargs.c, src/getargs.h, src/main.c: Use it. * cfg.mk (exclude): New. Use it. Skip lib/main.c for bindtextdomain and set_program_name. 2012-02-19 Akim Demaille maint: remove stray file. * config.hin: Remove. 2012-02-19 Akim Demaille doc: stylistic improvements. * doc/bison.texinfo: Prefer "continue" to empty loop bodies. Add some @group/@end group to avoid poor page breaks. 2012-02-19 Akim Demaille doc: check the rpcalc. * doc/bison.texinfo: Tag rpcalc.y snippets. Add missing includes. (Rpcalc Rules): Don't issue leading tabs. Complete an Info menu. Use @result. * examples/rpcalc/local.mk: New. * examples/rpcalc/rpcalc.test: New. * examples/local.mk: Use them. * examples/mfcalc/mfcalc.test: Remove dup test. * examples/test: Disable debug traces. 2012-02-19 Akim Demaille regen. * src/parse-gram.c, src/parse-gram.h: Regen. 2012-02-19 Akim Demaille maint: address sc_prohibit_doubled_word. * data/yacc.c, doc/bison.texinfo: Reword to avoid having to disable that check. * cfg.mk: No longer skip this test. 2012-02-19 Akim Demaille maint: address sc_prohibit_always-defined_macros. * cfg.mk: No longer skip it, except where EXIT_SUCCESS is used as a witness for stdlib.h. Skip this test when appropriate. * data/yacc.c: Drop a note about why EXIT_SUCCESS is defined here. 2012-02-19 Akim Demaille maint: address sc_bindtextdomain, sc_program_name and sc_prohibit_HAVE_MBRTOWC. * bootstrap.conf (gnulib_modules): Require progname. * src/complain.c, src/getargs.c, src/getargs.h, src/main.c: Use it. * cfg.mk (exclude): New. Use it. Skip lib/main.c for bindtextdomain and set_program_name. 2012-02-19 Akim Demaille maint: remove stray file. * config.hin: Remove. 2012-02-19 Akim Demaille bitset: fix an incorrect error message. * lib/bitset_stats.c: here. Reported by Stefano Lattarini. 2012-02-19 Akim Demaille maint: address some syntax-issues remaining after cherry-picking from master. * cfg.mk: Skip bison generated files, 2.5 is generating trailing blanks. This is already fixed in master. * tests/conflicts.at, tests/java.at: Fix white space issues. 2012-02-19 Akim Demaille regen. * src/parse-gram.c, src/parse-gram.h: Regen. 2012-02-19 Akim Demaille bitset: fix an incorrect error message. * lib/bitset_stats.c: here. Reported by Stefano Lattarini. 2012-02-19 Jim Meyering maint: reenable sc_m4_quote_check * cfg.mk (local-checks-to-skip): Reenable sc_m4_quote_check. * m4/dmalloc.m4: Add quotes. 2012-02-19 Akim Demaille maint: remove trailing empty lines. * cfg.mk: No longer skip sc_prohibit_empty_lines_at_EOF, except for parse-gram.h (generated). * examples/mfcalc/.gitignore, lib/.gitignore, m4/.gitignore, * po/.gitignore, runtime-po/.gitignore: Remove trailing/leading empty lines. 2012-02-19 Akim Demaille maint: avoid "magic number exit". * cfg.mk (local-checks-to-skip): No longer skip it. * bootstrap.conf (gnulib_modules): Add sysexits. * doc/bison.texinfo, etc/bench.pl.in, src/parse-gram.y, * src/system.h, tests/calc.at, tests/named-refs.at: Use assert where appropriate instead of "if (...) exit". Use symbolic exit status elsewhere. 2012-02-19 Akim Demaille maint: fix some syntax-check issues. * cfg.mk (local-checks-to-skip): Remove sc_prohibit_quotearg_without_use, sc_prohibit_strcmp, sc_unmarked_diagnostics, sc_useless_cpp_parens. (sc_unmarked_diagnostics): Skip DJGPP. * data/yacc.c, src/LR0.c, src/closure.c, * src/flex-scanner.h, src/gram.c, src/lalr.c, * src/print-xml.c, src/print.c, src/print_graph.c, * src/reader.c, src/reduce.c, src/tables.c: Don't use parens with cpp's defined. Remove useless includes. 2012-02-19 Akim Demaille maint: address a couple of syntax-check errors. * cfg.mk (local-checks-to-skip): Remove sc_error_message_period and sc_error_message_uppercase. Address the uncovered issues. * po/POTFILES.in: Add missing files. * src/symtab.c: Remove useless includes. * lib/bitset_stats.c, src/files.c, tests/glr-regression.at: Use conformant error messages. 2012-02-19 Akim Demaille maint: gnulib: upgrade. 2012-02-18 Akim Demaille maint: remove trailing empty lines. * cfg.mk: No longer skip sc_prohibit_empty_lines_at_EOF, except for parse-gram.h (generated). * examples/mfcalc/.gitignore, lib/.gitignore, m4/.gitignore, * po/.gitignore, runtime-po/.gitignore: Remove trailing/leading empty lines. 2012-02-18 Akim Demaille maint: regen. * src/parse-gram.c, src/parse-gram.h: regen. 2012-02-18 Akim Demaille maint: avoid "magic number exit". * cfg.mk (local-checks-to-skip): No longer skip it. * bootstrap.conf (gnulib_modules): Add sysexits. * doc/bison.texinfo, etc/bench.pl.in, src/parse-gram.y, * src/system.h, tests/calc.at, tests/named-refs.at: Use assert where appropriate instead of "if (...) exit". Use symbolic exit status elsewhere. 2012-02-18 Akim Demaille maint: fix some syntax-check issues. * cfg.mk (local-checks-to-skip): Remove sc_prohibit_quotearg_without_use, sc_prohibit_strcmp, sc_unmarked_diagnostics, sc_useless_cpp_parens. (sc_unmarked_diagnostics): Skip DJGPP. * data/yacc.c, src/LR0.c, src/closure.c, * src/flex-scanner.h, src/gram.c, src/lalr.c, * src/print-xml.c, src/print.c, src/print_graph.c, * src/reader.c, src/reduce.c, src/tables.c: Don't use parens with cpp's defined. Remove useless includes. 2012-02-18 Akim Demaille maint: address a couple of syntax-check errors. * cfg.mk (local-checks-to-skip): Remove sc_error_message_period and sc_error_message_uppercase. Address the uncovered issues. * po/POTFILES.in: Add missing files. * src/symtab.c: Remove useless includes. * lib/bitset_stats.c, src/files.c, tests/glr-regression.at: Use conformant error messages. 2012-02-18 Akim Demaille maint: gnulib: upgrade. 2012-02-17 Akim Demaille doc: mfcalc: fix includes. * doc/bison.texinfo: math.h is needed early. 2012-02-17 Akim Demaille examples: factor the test suite. * examples/mfcalc/test, examples/calc++/test: Extract the common bits into... * examples/test: here. (cwd): New. Use it to avoid a race on the temporary directory. Reported by Jim Meyering. * examples/mfcalc/test, examples/calc++/test: Rename into... * examples/mfcalc/mfcalc.test, examples/calc++/calc++.test: these. * examples/calc++/local.mk, examples/mfcalc/local.mk, * examples/local.mk: Adjust. 2012-02-17 Akim Demaille examples: fix the test suites. * examples/calc++/test, examples/mfcalc/test (me): Be more meaningfull: include the example name. (prog): Factor. (run): Avoid printf, use echo. Add missing parens. (cleanup): New. Call it on trap. Remove the previous "rm" that did the cleanup. Move into a private directory to avoid concurrency issues. Reported by Jim Meyering. 2012-02-17 Jim Meyering examples: link mfcalc with -lm for uses of pow, cos, atan, etc. * examples/mfcalc/local.mk (examples_mfcalc_mfcalc_LDADD): Define. 2012-02-16 Akim Demaille mfcalc: extract and exercise. * examples/mfcalc/local.mk, examples/mfcalc/test: New, based on calc++'s ones. * examples/local.mk: Include mfcalc/local.mk. 2012-02-16 Akim Demaille calc++: factor for other extracted tests. * Makefile.am (TESTS, check_PROGRAMS): Initialize here. * examples/local.mk (doc, extexi): Define here. * examples/calc++/local.mk: Adjust accordingly. * configure.ac: Ask for parallel-tests (for the way the logs are handled). * examples/calc++/test: As a consequence, always be verbose. ($prog): New. (run): Use it. Sort the tests in a more natural order (simplest first). 2012-02-16 Akim Demaille doc: mfcalc: send errors to stderr. * doc/bison.texinfo (Mfcalc Lexer): New. (Mfcalc Main): Move the definition of main and yyerror here, for clarity. Let yyerror report on stderr. 2012-02-16 Akim Demaille doc: fix mfcalc code. * doc/bison.texinfo (Multi-function Calc): Add missing includes. Fix the rendering of the result: use @result and remove the initial tabulation in the actual code. Fix stylistic issues: avoid the , operator. Add extexi mark-up. * examples/extexi: Also support @smallexample. 2012-02-16 Akim Demaille tests: c++: stylistic changes. * tests/c++.at: Don't use void for incoming arguments. Prefer cstdlib to stdlib.h. 2012-02-16 Jim Meyering tests: avoid c++ failure due to lack of getenv decl * tests/c++.at (Syntax error as exception): Avoid spurious failure at least when compiling with g++-4.7.x due to lack of declaration of getenv. Include . 2012-02-15 Akim Demaille maint: rely on Automake for parsers. * Makefile.am (AM_YFLAGS): Automake looks for "-d" alone. Move other options in here. (BISON): New. (YACC): Use it. (bison_SOURCES): Now that automake can see `-d' in AM_YFLAGS, we can rely on it to compile and ship the parser header files. Based on commit 737406a32c201471699bfa0843d1f432f3ec29ab and commit 3d6ca339083c278d907c9f030f4ba6bc5ecb07f2. 2012-02-15 Akim Demaille maint: trust Automake for parser headers. * examples/calc++/local.mk, src/local.mk: Now that automake can see `-d' in AM_YFLAGS, we can rely on it to compile and ship the parser header files. 2012-02-15 Akim Demaille maint: help Automake reading Yacc flags. * Makefile.am (AM_YFLAGS): Automake looks for "-d" alone. 2012-02-15 Akim Demaille calc++: rely on Automake. Rely on $(YACC) being the bison being built, and let Automake do the rest. It turned out to be much more difficult than anticipated, for various reasons, including some bad behavior from Automake 1.11.2 which (i) generates calc++-parser.h instead of calc++-parser.hh, and (ii) leaves an #include "y.tab.h" in the generated parser instead of #include "calc++-parser.h". The authors of Automake appear to be aware of the problem, http://lists.gnu.org/archive/html/automake/2011-05/msg00008.html so a simple work around will suffice for the time being. * examples/calc++/y.tab.h, examples/calc++/calc++-parser.hh: New. To work around Automake 1.11.2 issues. * examples/calc++/local.mk: Remove all the rules for compilation with bison, leave them to Automake. So provide it with "calc++-parse.yy" as a source file. (calc_sources_generated, calc_sources_extracted): Rename as. (calc_generated, calc_extracted): these. (calc_sources): New. Fix them. 2012-02-14 Akim Demaille maint: tidy the Makefile a bit. * src/local.mk: Put yacc related variables together. (AUTOMAKE_OPTIONS): Move to... * Makefile.am: here. Remove an old Emacs mode request which disables Automake support. * src/local.mk (YACC, AM_YFLAGS): Move to... * Makefile.am: here, as they will be used by other local.mks. 2012-02-14 Akim Demaille maint: de-recurse the handling of examples The directory was still using a local Makefile.am because it provides "scoped" Make variables: these examples are not meant to use the same CPPFLAGS etc. If we were to use the same -I set, we'd pick up gnulib's stdio.h for instance, which we do not want for these simple examples. Yet, as a result, the dependencies are less accurate, there is code duplication, etc. This is especially perceptible when trying to extract more examples from the documentation, as will be done in forthcoming changes. In order to make the tuning of CPPFLAGS easier, discard the predefined -I from Automake. * examples/calc++/Makefile.am: Rename as... * examples/calc++/local.mk: this. Adjust the paths which are now rooted in top_srcdir/top_builddir. Handle BISON_CXX_WORKS here, instead of the too crude previous approach that completely discarded the whole directory. ($(BISON)): Remove now useless bouncing recipe. (calc___CPPFLAGS): New. Stay away from -Ilib. * Makefile.am, configure.ac, examples/local.mk, * examples/calc++/test: Adjust. * configure.ac: Pass nostdinc to Automake. * src/local.mk, lib/local.mk (AM_CPPFLAGS): Move to... * Makefile.am: here. * src/local.mk, examples/calc++/Makefile.am (BISON, BISON_IN): Factor to... * Makefile.am: here. * tests/local.mk: Use it. 2012-02-14 Akim Demaille variant: fix the example. * examples/variant.yy: Adjust to "assert" being now "parse.assert". 2012-02-14 Akim Demaille maint: more authors. * AUTHORS: here. Suggested by Tys Lefering. 2012-02-14 Akim Demaille maint: add license headers. * examples/calc++/test, examples/variant.yy, AUTHORS, THANKS, * tests/atlocal.in, tests/bison.in: Add license headers. Reported by Tys Lefering. 2012-02-14 Akim Demaille maint: remove obsolete file. * etc/make-ChangeLogs: Remove (used for rcs to cvs migration!). Reported by Tys Lefering. 2012-02-14 Akim Demaille maint: more authors. * AUTHORS: here. Suggested by Tys Lefering. 2012-02-14 Akim Demaille maint: add license headers. * examples/calc++/test, examples/variant.yy, AUTHORS, THANKS, * tests/atlocal.in, tests/bison.in: Add license headers. Reported by Tys Lefering. 2012-02-14 Akim Demaille maint: remove obsolete file. * etc/make-ChangeLogs: Remove (used for rcs to cvs migration!). Reported by Tys Lefering. 2012-02-10 Akim Demaille lalr1.cc: also handle syntax_error when calling yylex. * data/lalr1.cc (parse): Catch syntax_error around yylex and forward them to errlab1. * tests/c++.at (Syntax error as exception): Check support for syntax exceptions raised by the scanner. * NEWS, doc/bison.texinfo: Document it. 2012-02-10 Akim Demaille tests: lalr1.cc: check syntax_error. * tests/c++.at (Syntax error as exception): New. 2012-02-10 Akim Demaille tests: don't require locations uselessly. * tests/c++.at (Syntax error discarding no lookahead): Contrary to 2.5, C++ parsers can work without locations. 2012-02-10 Akim Demaille maint: more silent rules. * tests/local.mk (TESTSUITE_AT): Include plackage.m4. Adjust dependencies. Make testsuite.at its first argument. (package.m4): Be silent. (testsuite): Be silent. Use $<. 2012-02-10 Akim Demaille skeletons: simplify the protections against "unused" warnings. * data/c.m4 (b4_parse_param_use): Also accept optional arguments to "use". Simplify callers. * data/glr.c (yyuserAction): Simplify use of b4_parse_param_use. (yy_reduce_print): Don't use b4_parse_param_use, as all the arguments _are_ used. * data/lalr1.cc (YY_SYMBOL_PRINT): Even when disabled, "use" the symbol argument. This neutralizes a warning in yypush_ when there are no symbols with a semantic values. (yy_destroy_): Remove useless "use" of yymsg. 2012-02-10 Akim Demaille glr: formatting changes. * data/glr.c: Split long strings. 2012-02-08 Akim Demaille use a more consistent quoting style. See . Use quotearg as often as possible instead of leaving the choice of the quotes to the translators. Use shorter messages. Factor similar messages to a single format, to make localization easier. * src/files.c, src/getargs.c, src/muscle-tab.c, src/reader.c * src/scan-code.l, src/scan-gram.l, src/symtab.c: Use quote() or quotearg_colon() on printf arguments instead of quotes in the format string. * data/bison.m4: Keep sync with the changes in muscle-tab.c. * tests/skeletons.at, tests/input.at, tests/regression.at: Adjust expected messages. 2012-02-08 Akim Demaille use a more consistent quoting style. See . Use quotearg as often as possible instead of leaving the choice of the quotes to the translators. Use shorter messages. Factor similar messages to a single format, to make localization easier. * src/files.c, src/getargs.c, src/muscle-tab.c, src/reader.c * src/scan-code.l, src/scan-gram.l, src/symtab.c: Use quote() or quotearg_colon() on printf arguments instead of quotes in the format string. * data/bison.m4: Keep sync with the changes in muscle-tab.c. * tests/skeletons.at, tests/input.at, tests/regression.at: Adjust expected messages. 2012-01-31 Jim Meyering maint: reenable sc_m4_quote_check * cfg.mk (local-checks-to-skip): Reenable sc_m4_quote_check. * m4/dmalloc.m4: Add quotes. 2012-01-31 Jim Meyering maint: force "make syntax-check" to pass by skipping failing tests * cfg.mk (local-checks-to-skip): Skip all currently-failing tests. Remove changelog-check; it's long gone. 2012-01-31 Akim Demaille maint: remove stray debug code. * src/Makefile.am (echo): Remove. 2012-01-31 Akim Demaille maint: space changes. * src/Makefile.am: Use 2 leading spaces for variable definition spreading over several lines. 2012-01-31 Akim Demaille maint: more silent-rules. * doc/local.mk, src/local.mk, examples/calc++/Makefile.am: Use $(AM_V_GEN) and $(AM_V_at) where appropriate. 2012-01-31 Jim Meyering do not ignore errors like ENOSPC,EIO when writing to stdout Standard output was never explicitly closed, so we could not detect failure. Thus, bison would ignore the errors of writing to a full file system and getting an I/O error on write, but only for standard output, e.g., for --print-localedir, --print-datadir, --help and some verbose output. Now, "bison --print-datadir > /dev/full" reports the write failure: bison: write error: No space left on device Before, it would exit 0 with no diagnostic, implying success. This is not an issue for "--output=-" or the other FILE-accepting command-line options, because unlike most other GNU programs, an output file argument of "-" is treated as the literal "./-", rather than standard output. * bootstrap.conf (gnulib_modules): Add closeout. * src/main.c: Include "closeout.h". Use atexit to ensure we close stdout. * .gitignore: Ignore new files pulled in via gnulib-tool. 2012-01-31 Akim Demaille maint: more silent-rules. * doc/local.mk, src/local.mk, examples/calc++/Makefile.am: Use $(AM_V_GEN) and $(AM_V_at) where appropriate. 2012-01-29 Jim Meyering do not ignore errors like ENOSPC,EIO when writing to stdout Standard output was never explicitly closed, so we could not detect failure. Thus, bison would ignore the errors of writing to a full file system and getting an I/O error on write, but only for standard output, e.g., for --print-localedir, --print-datadir, --help and some verbose output. Now, "bison --print-datadir > /dev/full" reports the write failure: bison: write error: No space left on device Before, it would exit 0 with no diagnostic, implying success. This is not an issue for "--output=-" or the other FILE-accepting command-line options, because unlike most other GNU programs, an output file argument of "-" is treated as the literal "./-", rather than standard output. * bootstrap.conf (gnulib_modules): Add closeout. * src/main.c: Include "closeout.h". Use atexit to ensure we close stdout. * .gitignore: Ignore new files pulled in via gnulib-tool. 2012-01-26 Akim Demaille tests: fix expected output. * tests/actions.at (YYBACKUP): here. 2012-01-26 Akim Demaille tests: fix expected output. * tests/actions.at (YYBACKUP): here. 2012-01-26 Akim Demaille maint: fix configure.ac Fix commit 1890a2a816dab86c23cc1d0af8fac3986335deb7. * configure.ac: Fix variable assignment. 2012-01-26 Akim Demaille yacc: fix YYBACKUP. Reported by David Kastrup: https://lists.gnu.org/archive/html/bug-bison/2011-10/msg00002.html. * data/yacc.c (YYBACKUP): Accept rhs size. Restore the proper state value. * TODO (YYBACKUP): Make it... * tests/actions.at: a new test case. * NEWS, THANKS: Update. 2012-01-26 Akim Demaille maint: update TODO. * TODO (Labeling the symbols): Remove, it's done ("Name references"). 2012-01-26 Akim Demaille maint: update THANKS. * THANKS: Update Tys's address, on his request. 2012-01-26 Akim Demaille maint: fix --gcc-warnings support. * configure.ac: Use enable_gcc_warnings instead of enableval, which is valid only with AC_ARG_ENABLE. 2012-01-26 Akim Demaille maint: silent-rules. * configure.ac: Ask for silent-rules support. Enable it by default. 2012-01-26 Akim Demaille maint: remove trailing blanks. * src/scan-code.l: Here. 2012-01-26 Akim Demaille yacc: fix YYBACKUP. Reported by David Kastrup: https://lists.gnu.org/archive/html/bug-bison/2011-10/msg00002.html. * data/yacc.c (YYBACKUP): Accept rhs size. Restore the proper state value. * TODO (YYBACKUP): Make it... * tests/actions.at: a new test case. * NEWS, THANKS: Update. 2012-01-25 Akim Demaille maint: update TODO. * TODO (Labeling the symbols): Remove, it's done ("Name references"). 2012-01-25 Akim Demaille maint: update THANKS. * THANKS: Update Tys's address, on his request. 2012-01-25 Akim Demaille maint: fix --gcc-warnings support. * configure.ac: Use enable_gcc_warnings instead of enableval, which is valid only with AC_ARG_ENABLE. 2012-01-25 Akim Demaille maint: silent-rules. * configure.ac: Ask for silent-rules support. Enable it by default. 2012-01-25 Paul Eggert tests: port to Solaris 10 'diff -u' * tests/regression.at (parse-gram.y: LALR = IELR): Port to Solaris 10, where "diff -u X X" outputs "No differences encountered" instead of outputting nothing. Reported by Tomohiro Suzuki in . 2012-01-25 Jim Meyering build: avoid possibly-replaced fprintf in liby-source, yyerror.c * lib/yyerror.c (yyerror): Use fputs and fputc rather than fprintf with a mere "%s\n" format. Always return 0 now, on the assumption that the return value was never used anyway. Don't include after all. This avoids a problem reported by Thiru Ramakrishnan in http://lists.gnu.org/archive/html/help-bison/2011-11/msg00000.html * cfg.mk: Exempt lib/yyerror.c from the sc_require_config_h_first test. * THANKS: Update. 2012-01-24 Paul Eggert tests: port to Solaris 10 'diff -u' * tests/regression.at (parse-gram.y: LALR = IELR): Port to Solaris 10, where "diff -u X X" outputs "No differences encountered" instead of outputting nothing. Reported by Tomohiro Suzuki in . 2012-01-24 Jim Meyering maint: generate ChangeLog from git log * Makefile.am (gen-ChangeLog): New rule. (dist-hook): Depend on it. (EXTRA_DIST): Distribute the two ChangeLog-* files. * bootstrap.conf (gnulib_modules): Add gitlog-to-changelog. (bootstrap_post_import_hook): Ensure that ChangeLog exists. * build-aux/git-log-fix: New file. * ChangeLog-2012: Renamed ... * ChangeLog: ... from this. * ChangeLog-1998: Renamed ... * OChangeLog: ...from this * .gitignore: Add ChangeLog. 2012-01-24 Jim Meyering change more quotes in source, and adjust tests to match Run this command to change each `%s' to '%s' in source directories: git grep -l '`%s'\' src djgpp data \ |xargs perl -pi -e '$q="'\''";s/`%s$q/$q%s$q/g' * data/bison.m4: Affected per the above. * djgpp/subpipe.c: Likewise. * src/files.c: Likewise. * src/getargs.c: Likewise. * src/muscle-tab.c: Likewise. * src/reader.c: Likewise. * tests/glr-regression.at: Adjust to match. * tests/input.at: Likewise. * tests/push.at: Likewise. * tests/skeletons.at: Likewise. 2012-01-23 Jim Meyering quote consistently and make tests pass with new quoting from gnulib Updating to gnulib pulled in new quote and quotarg modules, by which quoting is now done like 'this' rather than `this'. That change induces many "make check" test failures. This change adapts code and tests so that "make check" passes once again. * src/scan-code.l: Quote like 'this', not like `this'. * src/scan-gram.l: Likewise. * src/symtab.c: Likewise. * tests/actions.at: Adjust tests to match. * tests/input.at: Likewise. * tests/named-refs.at: Likewise. * tests/output.at: Likewise. * tests/regression.at: Likewise. * lib/.gitignore: Regenerate. * m4/.gitignore: Likewise. 2012-01-23 Jim Meyering build: avoid possibly-replaced fprintf in liby-source, yyerror.c * lib/yyerror.c (yyerror): Use fputs and fputc rather than fprintf with a mere "%s\n" format. Always return 0 now, on the assumption that the return value was never used anyway. Don't include after all. This avoids a problem reported by Thiru Ramakrishnan in http://lists.gnu.org/archive/html/help-bison/2011-11/msg00000.html * cfg.mk: Exempt lib/yyerror.c from the sc_require_config_h_first test. * THANKS: Update. 2012-01-23 Jim Meyering build: update gnulib and autoconf submodules to latest (cherry picked from commit 728415f885e5cb8e518c8576fa6e1f541e384130) 2012-01-23 Jim Meyering build: manually update bootstrap from gnulib, and adapt Updating to the latest bootstrap from gnulib involves more of a change than usual, and updating to the latest gnulib would involve its own set of challenges with the upcoming quoting changes, so we update bootstrap manually and separately. * bootstrap: Update from gnulib. * lib/Makefile.am: Initialize more variables to empty, so that gnulib.mk can append to them with "+=". * bootstrap.conf (gnulib_mk_hook): Remove. No longer honored. (gnulib_tool_option_extras): Generate gnulib.mk. 2012-01-23 Jim Meyering maint: include first * cfg.mk (exclude_file_name_regexp--sc_require_config_h_first): Exempt data/glr.c and data/yacc.c from the include-config.h-first requirement. 2012-01-23 Jim Meyering build: include from lib/yyerror.c * lib/yyerror.c: Include . 2012-01-23 Jim Meyering maint: list djgpp/subpipe.c in po/POTFILES.in * po/POTFILES.in: Add djgpp/subpipe.c. 2012-01-23 Jim Meyering maint: placate the space-TAB syntax-check * cfg.mk (exclude_file_name_regexp--sc_space_tab): Exempt tests/input.at and tests/c++.at, since they appear to use SP-TAB sequences deliberately. * OChangeLog: Remove space-before-TAB. 2012-01-23 Jim Meyering doc: correct typo: s/can not/cannot/ * doc/bison.texinfo (Bug Reports): s/can not/cannot/ And remove trailing blanks. 2012-01-23 Jim Meyering build: generalize etc/prefix-gnulib-mk This script hard-coded "libbison" and lib/gnulib.mk. Adjust the script to require a --lib-name=$gnulib_name option and a FILE argument like lib/$gnulib_mk. Also add support for --help and --version. * etc/prefix-gnulib-mk: Generalize. * bootstrap.conf (bootstrap_post_import_hook): Update its invocation. 2012-01-22 Jim Meyering maint: get gpl-3.0 from gnulib * bootstrap.conf (gnulib_modules): Add gpl-3.0. * doc/gpl-3.0.texi: Remove from version control, now that we get it via gnulib. * doc/.gitignore: Ignore it. 2012-01-20 Akim Demaille maint: be more robust to gnulib's FOO_H variables. * configure.ac: Instead of listing gnulib's variables, look for them among AC_SUBST variables. 2012-01-20 Jim Meyering maint: generate ChangeLog from git log * Makefile.am (gen-ChangeLog): New rule. (dist-hook): Depend on it. (EXTRA_DIST): Distribute the two ChangeLog-* files. * bootstrap.conf (gnulib_modules): Add gitlog-to-changelog. (bootstrap_post_import_hook): Ensure that ChangeLog exists. * build-aux/git-log-fix: New file. * ChangeLog-2012: Renamed ... * ChangeLog: ... from this. * ChangeLog-1998: Renamed ... * OChangeLog: ...from this * .gitignore: Add ChangeLog. 2012-01-19 Jim Meyering change more quotes in source, and adjust tests to match Run this command to change each `%s' to '%s' in source directories: git grep -l '`%s'\' src djgpp data \ |xargs perl -pi -e '$q="'\''";s/`%s$q/$q%s$q/g' * data/bison.m4: Affected per the above. * djgpp/subpipe.c: Likewise. * src/files.c: Likewise. * src/getargs.c: Likewise. * src/muscle-tab.c: Likewise. * src/reader.c: Likewise. * tests/glr-regression.at: Adjust to match. * tests/input.at: Likewise. * tests/push.at: Likewise. * tests/skeletons.at: Likewise. 2012-01-19 Jim Meyering quote consistently and make tests pass with new quoting from gnulib Updating to gnulib pulled in new quote and quotarg modules, by which quoting is now done like 'this' rather than `this'. That change induces many "make check" test failures. This change adapts code and tests so that "make check" passes once again. * src/scan-code.l: Quote like 'this', not like `this'. * src/scan-gram.l: Likewise. * src/symtab.c: Likewise. * tests/actions.at: Adjust tests to match. * tests/input.at: Likewise. * tests/named-refs.at: Likewise. * tests/output.at: Likewise. * tests/regression.at: Likewise. * lib/.gitignore: Regenerate. * m4/.gitignore: Likewise. 2012-01-19 Jim Meyering build: update gnulib and autoconf submodules to latest 2012-01-19 Jim Meyering build: manually update bootstrap from gnulib, and adapt Updating to the latest bootstrap from gnulib involves more of a change than usual, and updating to the latest gnulib would involve its own set of challenges with the upcoming quoting changes, so we update bootstrap manually and separately. * bootstrap: Update from gnulib. * Makefile.am: Initialize more variables to empty, so that gnulib.mk can append to them with "+=". * bootstrap.conf (gnulib_mk_hook): Remove. No longer honored. (bootstrap_post_import_hook): Instead, run the same command, etc/prefix-gnulib-mk lib/$gnulib_mk, via slightly different API. Temporarily disable "bootstrap_sync=true". * etc/prefix-gnulib-mk: Don't prepend "lib/" to tokens like -I$(... or "\". 2012-01-19 Jim Meyering maint: include first * cfg.mk (exclude_file_name_regexp--sc_require_config_h_first): Exempt data/glr.c and data/yacc.c from the include-config.h-first requirement. 2012-01-19 Jim Meyering build: include from lib/yyerror.c * lib/yyerror.c: Include . 2012-01-19 Jim Meyering maint: list djgpp/subpipe.c in po/POTFILES.in * po/POTFILES.in: Add djgpp/subpipe.c. 2012-01-19 Jim Meyering maint: placate the space-TAB syntax-check * cfg.mk (exclude_file_name_regexp--sc_space_tab): Exempt tests/input.at and tests/c++.at, since they appear to use SP-TAB sequences deliberately. * OChangeLog: Remove space-before-TAB. 2012-01-19 Jim Meyering maint: remove final trailing space * src/scan-gram.l (%): Remove single space at end of line. 2012-01-19 Jim Meyering maint: get gpl-3.0 from gnulib * bootstrap.conf (gnulib_modules): Add gpl-3.0. * doc/gpl-3.0.texi: Remove from version control, now that we get it via gnulib. * doc/.gitignore: Ignore it. 2012-01-19 Jim Meyering doc: correct typo: s/can not/cannot/ * doc/bison.texinfo (Bug Reports): s/can not/cannot/ And remove trailing blanks.