gcc/testsuite/gcc.dg/pr46315.c

   1 /* PR rtl-optimization/46315 */
   2 /* Reported by Magnus Granberg <zorry@gentoo.org> */
   3
   4 /* { dg-do run } */
   5 /* { dg-options "-O2 -fno-strict-overflow" } */
   6
   7 extern void abort (void);
   8
   9 static char const *
  10 parse_ranged (char const *s, int digits)
  11 {
  12   int n = 0;
  13   char const *lim = s + digits;
  14   while (s < lim)
  15     {
  16       unsigned d = *s++ - '0';
  17       if (9 < d)
  18         return 0;
  19       n = 10 * n + d;
  20     }
  21   return s && 0 <= n && n <= 59 ? s : 0;
  22 }
  23
  24 int main(void)
  25 {
  26   const char *s = "10092240";
  27
  28   s = parse_ranged (s, 2);
  29   s = parse_ranged (s, 2);
  30   s = parse_ranged (s, 2);
  31   s = parse_ranged (s, 2);
  32
  33   if (!s || *s != '\0')
  34     abort();
  35
  36   return 0;
  37 }