RE: [GD-General] Multiple Inheritance and RTTI

[Alex L. <ali...@au...>]

Has anyone considered comparing the vtable pointers themselves in order to
identify a class?

As far as I understand it, every polymorphic class is going to have a unique
vtable pointer, and while it's compiler dependent, my experience is that the
vtable pointer tends to be the first "member" data in every instance.

i.e. int vtable = *reinterpret_cast<int*>(someInstancePointer);

I'm not too sure about multiple inheritance.

One problem is that you need an instance of every class you wish to identify
so that you have a value to compare! Some start up function could harvest
these from temporary instances.

I would love to hear problems with this!

Alex Lindsay