From 3292b8c6f1e5fcc405fa0f7a20e90a60f74037b2 Mon Sep 17 00:00:00 2001
From: Matt Johnston <matt@ucc.asn.au>
Date: Sun, 12 Feb 2023 23:00:00 +0800
Subject: Use write() rather than fprintf() in segv handler

fprintf isn't guaranteed safe (though hasn't had any problems reported).
---
 svr-main.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/svr-main.c
+++ b/svr-main.c
@@ -420,8 +420,12 @@ static void sigchld_handler(int UNUSED(u
 
 /* catch any segvs */
 static void sigsegv_handler(int UNUSED(unused)) {
-	fprintf(stderr, "Aiee, segfault! You should probably report "
-			"this as a bug to the developer\n");
+	int i;
+	const char *msg = "Aiee, segfault! You should probably report "
+			"this as a bug to the developer\n";
+	i = write(STDERR_FILENO, msg, strlen(msg));
+	/* ignore short writes */
+	(void)i;
 	_exit(EXIT_FAILURE);
 }