gcc/testsuite/gcc.dg/pr67077.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wall -O2" } */
   3
   4 unsigned char buffer[8];
   5 unsigned long
   6 foo (void)
   7 {
   8   unsigned long i;
   9   i = buffer[0];
  10   if (i >= 8)
  11     return i - 7;
  12   i++;
  13   while (i > 8)
  14     {
  15       if (buffer[i-1] != 0)
  16         return 0;
  17       i--;
  18     }
  19   return 1;
  20 }