gcc/testsuite/gcc.dg/pr108657.c

   1 /* PR tree-optimization/108657 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O3 -ftrivial-auto-var-init=zero" } */
   4
   5 int c, e, f;
   6 static int *d = &c;
   7
   8 __attribute__((noipa)) void
   9 foo (void)
  10 {
  11   if (c != 1)
  12     __builtin_abort ();
  13 }
  14
  15 int
  16 main ()
  17 {
  18   for (c = 1; c >= 0; c--)
  19     {
  20       e = 0;
  21       for (int j = 0; j <= 2; j++)
  22         {
  23           short k[1];
  24           if (e)
  25             break;
  26           e ^= f;
  27         }
  28     }
  29   *d = 1;
  30   foo ();
  31 }