gcc/testsuite/gcc.dg/pr77454.c

   1 /* PR tree-optimization/77454 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 void
   6 foo (unsigned char x, char y)
   7 {
   8   while (x != 0)
   9     {
  10       unsigned char *a = &x;
  11       int b;
  12
  13       if (y != 0)
  14         a = (unsigned char *) &y;
  15       else if (y + 1 != 0)
  16         a = (unsigned char *) &y;
  17       for (x = 0; x < 1; ++x)
  18         b = 0;
  19       for (y = 0; y < 3; ++y)
  20         {
  21           y = !!y;
  22           if (y != 0)
  23             x = y;
  24         }
  25       if ((b != 0 ? -1 : *a) < (y = b))
  26         b = 1;
  27     }
  28 }