Actually, that's not always correct in C++ (it is in C). It is possible that either type has the operator& overloaded, so instead the proper way to do it is:

Actually, that's not always correct in C++ (it is in C). It is possible that either type has the operator& overloaded, so instead the proper way to do it is: (std::addressof(a) == std::addressof(b)) http://en.cppreference.com/w/cpp/memory/addressof http://en.cppreference.com/w/cpp/memory/addressof