gcc/testsuite/gcc.c-torture/compile/pr65803.c

   1 /* { dg-options "-fno-strict-overflow" } */
   2 typedef unsigned char __uint8_t;
   3 typedef __uint8_t uint8_t;
   4 typedef uint8_t u8_t;
   5 typedef struct ip_addr ip_addr_t;
   6 char *
   7 ipaddr_ntoa_r (const ip_addr_t * addr, char *buf, int buflen)
   8 {
   9   char inv[3];
  10   char *rp;
  11   u8_t *ap;
  12   u8_t n;
  13   u8_t i;
  14   int len = 0;
  15   for (n = 0; n < 4; n++)
  16     {
  17       while (*ap);
  18       while (i--)
  19         {
  20           if (len++ >= buflen)
  21             return ((void *) 0);
  22           *rp++ = inv[i];
  23         } ap++;
  24     }
  25 }