Hi Vincent, I am not aware of a GCC C++ equivalent to the MSVC++ __declspec(novtable). Since __declspec(novtable) is a hand-coded optimization, you should be able to get by without having one. I'd be shocked if the absence of that (questionable!) optimization was sufficiently a performance penalty as to be warranted, even in contrived toy applications meant to exacerbate that situation. Unless profiling indicates otherwise -- then I'd be a believer. --Eljay MSDN article on __declspec(novtable): http://msdn.microsoft.com/msdnmag/issues/0300/c/