#include <iostream>
#include <typeinfo>
#include <cstdio>

using namespace std;

class A {
  public:
  int x;
  virtual void test();
  virtual void test2();
  ~A() { }
};

void A::test() { }

class B {
  public:
  int y;
  virtual void test2();
  virtual void test3(A*);
};

extern A *gen();

void cppfun() {
  A *a = gen();
  printf("Size: %i\n", sizeof(A));
  printf("x: %i\n", a->x);
  // printf("gen -> %p; calling\n", a);
  a->test();
  a->test2();
  asm("nop");
  printf("name of a is %s (%p) from %p\n", typeid(*a).name(), typeid(*a).name(), &typeid(*a));
  asm("nop");
  printf("Time for dyncast!\n");
  B *b = dynamic_cast<B*> (a);
  printf("y: %i\n", b->y);
  b->test3(a);
  printf("Done. \n");
}