gcc/testsuite/gcc.dg/pr42084.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O1 -fno-delete-null-pointer-checks" } */
   3 extern void abort (void);
   4 int g = 0;
   5 static int __attribute__((noinline)) f (long long a, long long b)
   6 {
   7   int cmp;
   8   cmp = a > b;
   9   if (&g == 0)
  10     cmp-=2;
  11   else
  12     cmp++;
  13   return cmp;
  14 }
  15
  16 int main (void)
  17 {
  18   int ret = f (2, 1);
  19   if (ret != 2)
  20     abort ();
  21   return 0;
  22 }