gcc/testsuite/gcc.dg/pr33434-3.c

   1 /* PR tree-optimization/33434 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O3" } */
   4
   5 int k;
   6
   7 void __attribute__((noinline)) f2 (int b)
   8 {
   9   k = b - 1;
  10 }
  11
  12 void f1 (int a, int b)
  13 {
  14   f2 (b);
  15   a = 1;
  16   b = 1;
  17   if (a)
  18     while (b --)
  19       k = 1;
  20   else
  21     if (b != 1)
  22       __builtin_abort ();
  23 }
  24
  25 int main (void)
  26 {
  27   f1 (1, 1);
  28   if (k != 1)
  29     __builtin_abort ();
  30   return 0;
  31 }