#include "a.h" void A::doSomething(A &anotherA) { printf("In A %p doing something with %d.\n", this, m_a_value); int tmp_value = anotherA.Value(); printf("Also have another A at %p: %d.\n", &anotherA, tmp_value); // Break here in doSomething. } class Extra { public: Extra (int in_one, int in_two) : m_extra_one(in_one), m_extra_two(in_two) {} private: int m_extra_one; int m_extra_two; }; class B : public Extra, public virtual A { public: B (int b_value, int a_value) : Extra(b_value, a_value), A(a_value), m_b_value(b_value) {} B (int b_value, int a_value, A *client_A) : Extra(b_value, a_value), A(a_value, client_A), m_b_value(b_value) {} virtual ~B () {} private: int m_b_value; }; static A* my_global_A_ptr; int main (int argc, char **argv) { my_global_A_ptr = new B (100, 200); B myB (10, 20, my_global_A_ptr); B *second_fake_A_ptr = new B (150, 250); B otherB (300, 400, second_fake_A_ptr); myB.doSomething(otherB); // Break here and get real addresses of myB and otherB. A reallyA (500); myB.doSomething (reallyA); // Break here and get real address of reallyA. myB.doSomething(*make_anonymous_B()); return 0; }