Calling private method in C++

Question

This is purely a theoretical question, I know that if someone declares a method private, you probably shouldn\'t call it. I managed to call private virtual methods and chang

Answer 1

See my blog post. I'm reposting the code here

template
struct result {
  /* export it ... */
  typedef typename Tag::type type;
  static type ptr;
};

template
typename result::type result::ptr;

template
struct rob : result {
  /* fill it ... */
  struct filler {
    filler() { result::ptr = p; }
  };
  static filler filler_obj;
};

template
typename rob::filler rob::filler_obj;

Some class with private members

struct A {
private:
  void f() {
    std::cout << "proof!" << std::endl;
  }
};

And how to access them

struct Af { typedef void(A::*type)(); };
template class rob;

int main() {
  A a;
  (a.*result::ptr)();
}