Thread: Multiple inheritance: casting yields different address

Originally Posted by dwks

The ReferenceCounter is using const void* pointers and uses typeid to remember the type of the original object added to it. I don't really think it can be improved that much, unless there's a way to detect whether a class is multiply-inherited or not.

Why didn't you go for say, std::tr1::shared_ptr instead of ReferenceCounter?

Originally Posted by dwks

Maybe I've been using too much Java lately, because it would be a perfect place to use Java interfaces.

A class without data members defines a pure interface, so the C++ near-equivalent to a Java interface is an abstract base class without data members. That said, I think you knew this already

EDIT:
Oh, looking at your code again, maybe the appropriate solution in this case is to use virtual inheritance:

Code:

class Branch1 : virtual public Base {};
class Branch2 : virtual public Base {};