gcc/testsuite/gcc.dg/unsigned-long-compare.c

   1 /* Copyright (C) 2006 Free Software Foundation, Inc. */
   2 /* Contributed by Carlos O'Donell on 2006-01-30 */
   3
   4 /* Test a division corner case where the expression simplifies
   5    to a comparison, and the optab expansion is wrong. The optab
   6    expansion emits a function whose return is unbiased and needs
   7    adjustment. */
   8 /* Origin: Carlos O'Donell <carlos@codesourcery.com> */
   9 /* { dg-do run } */
  10 /* { dg-options "" } */
  11 #include <stdlib.h>
  12
  13 #define BIG_CONSTANT 0xFFFFFFFF80000000ULL
  14
  15 int main (void)
  16 {
  17   unsigned long long OneULL = 1ULL;
  18   unsigned long long result;
  19
  20   result = OneULL / BIG_CONSTANT;
  21   if (result)
  22     abort ();
  23   exit (0);
  24 }