gcc/testsuite/gcc.c-torture/execute/20060910-1.c

   1 /* PR rtl-optimization/28636 */
   2 /* Origin: Andreas Schwab <schwab@suse.de> */
   3
   4 extern void abort(void);
   5
   6 struct input_ty
   7 {
   8   unsigned char *buffer_position;
   9   unsigned char *buffer_end;
  10 };
  11
  12 int input_getc_complicated (struct input_ty *x) { return 0; }
  13
  14 int check_header (struct input_ty *deeper)
  15 {
  16   unsigned len;
  17   for (len = 0; len < 6; len++)
  18     if (((deeper)->buffer_position < (deeper)->buffer_end
  19          ? *((deeper)->buffer_position)++
  20          : input_getc_complicated((deeper))) < 0)
  21       return 0;
  22   return 1;
  23 }
  24
  25 struct input_ty s;
  26 unsigned char b[6];
  27
  28 int main (void)
  29 {
  30   s.buffer_position = b;
  31   s.buffer_end = b + sizeof b;
  32   if (!check_header(&s))
  33     abort();
  34   if (s.buffer_position != s.buffer_end)
  35     abort();
  36   return 0;
  37 }