gcc/testsuite/gcc.dg/pr49948.c

   1 /* PR tree-optimization/49948 */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target pthread } */
   4 /* { dg-options "-O3 -ftree-parallelize-loops=2" } */
   5
   6 extern int a, *b;
   7 int
   8 foo (void)
   9 {
  10   int c, d = 8, *e[8], i;
  11   if (a <= 7)
  12     {
  13       for (i = 0; i < 8; ++i)
  14         e[i] = &c;
  15       while (--d)
  16         {
  17           a = 0;
  18           b = e[0];
  19         }
  20       return 0;
  21     }
  22   return b == &d;
  23 }