Throwing C++ exceptions across DLL boundaries

Question

I\'ve read various things about how one should not allocate heap memory in one DLL and deallocate it from outside that DLL. But what about throwing an exception object that

Answer 1

Throwing C++ exceptions across DLL boundaries is only possible when all modules use the same C++ runtime, in which case they share a heap as well. But this can be a maintenance burden, especially when libraries from multiple vendors are involved, so it is discouraged.

If you want error-handling which is portable across multiple compilers/compiler versions/compiler settings, either use return codes or OS-provided exceptions (e.g. SEH on Windows)/