1  struct s { int a; } *ptr;
       2  void unknown_int_ptr (int *);
       3  void unknown_void (void);
       4  
       5  void test_1 ()
       6  {
       7    unknown_int_ptr (&ptr->a);
       8  }
       9  
      10  void test_2 ()
      11  {
      12    unknown_void ();
      13    unknown_int_ptr (&ptr->a);
      14  }