gcc/testsuite/gcc.dg/pr94368.c

   1 /* PR target/94368 */
   2 /* { dg-do compile { target fpic } } */
   3 /* { dg-options "-fpic -O1 -fcommon" } */
   4
   5 int b, c, d, e, f, h;
   6 short g;
   7 int foo (int) __attribute__ ((__const__));
   8
   9 void
  10 bar (void)
  11 {
  12   while (1)
  13     {
  14       while (1)
  15         {
  16           __atomic_load_n (&e, 0);
  17           if (foo (2))
  18             __sync_val_compare_and_swap (&c, 0, f);
  19           b = 1;
  20           if (h == e)
  21             break;
  22         }
  23       __sync_val_compare_and_swap (&g, -1, f);
  24     }
  25 }