gcc/testsuite/gcc.c-torture/compile/builtin_constant_p.c - gcc - Git at Google

 int main (int argc, char *argv[])
 {
   static int a[] = { __builtin_constant_p (argc) ? 1 : 0 };
   return a[0];
 }
	int main (int argc, char *argv[])
	{
	static int a[] = { __builtin_constant_p (argc) ? 1 : 0 };
	return a[0];
	}