gcc/testsuite/gcc.dg/pr56466.c

   1 /* PR rtl-optimization/56466 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -w -funroll-loops" } */
   4
   5 int a, b, c;
   6
   7 void
   8 f (void)
   9 {
  10   for (; b; b++)
  11     {
  12       if (0)
  13         for (; b < 0; b++)
  14           if (1 % 0)
  15             {
  16               while (1)
  17                 {
  18                   a = 0;
  19                 lbl1:
  20                   c++;
  21                 }
  22             lbl2:
  23               ;
  24             }
  25
  26       goto lbl1;
  27     }
  28
  29   a = 0;
  30   goto lbl2;
  31 }