gcc/testsuite/gcc.dg/pr83361.c

   1 /* PR rtl-optimization/83361 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -freorder-blocks-and-partition -Wno-div-by-zero" } */
   4
   5 #include <limits.h>
   6
   7 int yz;
   8
   9 void
  10 tq (int z3)
  11 {
  12   unsigned long long int n8 = (unsigned long long int)INT_MAX + 1;
  13   int *ey = &yz;
  14
  15   if (yz == 0)
  16     {
  17       int bc;
  18
  19       yz = 1;
  20       while (yz != 0)
  21         {
  22           *ey *= bc;
  23           n8 = !!(1 / ((unsigned long long int)yz == n8));
  24           ey = &z3;
  25         }
  26
  27       while (z3 != 0)
  28         {
  29         }
  30     }
  31
  32   z3 = (n8 != 0) && (*ey != 0);
  33   z3 = yz / z3;
  34   if (z3 < 0)
  35     {
  36       if (yz != 0)
  37         yz = 0;
  38       yz /= 0;
  39     }
  40 }