#include <stdlib.h>

typedef struct {
  int *a;
  int *b;
} mystruct;

int
main (int argc, char* argv[])
{
  const int N = 1024;
  mystruct *m = (mystruct *) malloc (sizeof (*m));
  int i;

  m->a = (int *) malloc (N * sizeof (int));
  m->b = (int *) malloc (N * sizeof (int));

  for (i = 0; i < N; i++)
    {
      m->a[i] = 0;
      m->b[i] = 0;
    }

#pragma acc enter data copyin(m[0:1])

  for (int i = 0; i < 99; i++)
    {
      int j;
      int *ptr = m->a;
#pragma acc parallel loop copy(m->a[0:N])
      for (j = 0; j < N; j++)
	m->a[j]++;
#pragma acc parallel loop copy(m->b[0:N])
      for (j = 0; j < N; j++)
	m->b[j]++;
    }

#pragma acc exit data copyout(m[0:1])

  for (i = 0; i < N; i++)
    {
      if (m->a[i] != 99)
	abort ();
      if (m->b[i] != 99)
	abort ();
    }

  free (m->a);
  free (m->b);
  free (m);

  return 0;
}