Dll compatibility between compilers

Question

Is there some way to make c++ dlls built with diffrent compilers compatible with each other? The classes can have factory methods for creation and destruction, so each compi

Answer 1

You do critically depend on the v-table layout being compatible between VC and GCC. That is somewhat likely to be okay. Ensuring that the calling convention matches is something you should check (COM: __stdcall, you: __thiscall).

Significantly, you are getting a AV on writing. Nothing is being written when you make the method call itself, so it is likely that operator<< is doing the bombing. Does std::cout get probably initialized by the GCC runtime when a DLL is loaded with LoadLibrary()? The debugger should tell.