1  int main (int argc, char *argv[])
       2  {
       3    static int a[] = { __builtin_constant_p (argc) ? 1 : 0 };
       4    return a[0];
       5  }
       6  
       1  int main (int argc, char *argv[])
       2  {
       3    static int a[] = { __builtin_constant_p (argc) ? 1 : 0 };
       4    return a[0];
       5  }
       6