進捗です

vtable.cpp

#include <iostream>

typedef void (*f_t)();

class Base {
public:
  virtual void f();
};

struct Derivied : public Base {
public:
  void f();
};

void Base::f()
{
  std::cout << "hello, I am base" << std::endl;
}

void Derivied::f()
{
  std::cout << "hello, I am derived" << std::endl;
}

int main(int argc, char const *argv[])
{

  Derivied *x = new Derivied;
  void (***f)() = reinterpret_cast<f_t **>(x);
  (**f)();
  return 0;
}