gcc/testsuite/gcc.dg/pr69071.c

   1 /* PR target/69071 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -g" } */
   4 /* { dg-require-effective-target size20plus } */
   5
   6 void *bar (void *);
   7
   8 void
   9 foo (int c)
  10 {
  11   unsigned char bf[65400];
  12   unsigned char *p2 = bar (bf);
  13   unsigned char *p3 = bar (bf);
  14   for (; *p2; p2++, c++)
  15     {
  16       if (c)
  17         {
  18           short of = p2 - bf - 6;
  19           unsigned ofu = of;
  20           __builtin_memcpy (p3, &ofu, sizeof (ofu));
  21         }
  22     }
  23 }