gcc/testsuite/gcc.dg/pr27003.c

   1 /* { dg-do run } */
   2 /* { dg-options "-Os" } */
   3
   4 unsigned int
   5 foo (unsigned int x)
   6 {
   7   unsigned int r = x;
   8   while (--x)
   9     r *= x;
  10   return r;
  11 }
  12
  13 unsigned long long
  14 bar (unsigned long long x)
  15 {
  16   unsigned long long r = x;
  17   while (--x)
  18     r *= x;
  19   return r;
  20 }
  21
  22 extern void abort (void);
  23
  24 int
  25 main (void)
  26 {
  27   if (foo (5) != 120 || bar (5) != 120)
  28     abort ();
  29   return 0;
  30 }