On some large application (not written by me), GCC 4.0 does not emit some vtables, and link errors are the result. If I understand things correctly, a certain member is deemed the controlling member, and the vtable is emitted in the translation unit which contains this member. Is there a way to cause GCC to print this member? I think this would help me to debug this issue. (It's probably a bug in the application, but I'm not completely sure.)