gcc/testsuite/gcc.dg/torture/pr87342.c

   1 /* { dg-do compile } */
   2
   3 int ix;
   4
   5 void
   6 o6 (int rh)
   7 {
   8   if (rh == 0)
   9     {
  10       ix = 0;
  11       while (ix < 1)
  12         {
  13         }
  14
  15       for (;;)
  16         if (ix == 0)
  17           while (rh < 1)
  18             {
  19               if (rh == 0)
  20                 {
  21                   __builtin_unreachable ();
  22
  23 kp:
  24                   if (ix == 0)
  25                     {
  26 hk:
  27                       ix = 0;
  28                     }
  29                 }
  30
  31               while (rh < 1)
  32                 if (ix == 0)
  33                   goto kp;
  34
  35               while (rh < 1)
  36                 {
  37                 }
  38             }
  39         else
  40           goto kp;
  41     }
  42
  43   goto hk;
  44 }