No; g++ does not cope with the use of explicitly-scoped nested type names as
formal parameter types of return types for member functions.  For example,
the following class definition will not compile with g++:

        class Event {
        public:
            typedef void *Data;

            Event::Data get_data(void);
            int set_data(Event::Data new_data);
        };

Cygnus is aware of this problem and claims it's fixed in the next release of
g++.

[from matt@x.org (Matt Landau)]