1 struct s { int a; } *ptr; 2 void unknown_int_ptr (int *); 3 void unknown_void (void); 4 test_1()5 void test_1 () 6 { 7 unknown_int_ptr (&ptr->a); 8 } 9 test_2()10 void test_2 () 11 { 12 unknown_void (); 13 unknown_int_ptr (&ptr->a); 14 } 15