On 18 Jan 2006 21:22:11 -0600, Gabriel Dos Reis wrote: > The program is indeed in error. There are two kinds of ambiguity: > (1) name lookup ambiguity > (2) call ambiguity. > > Since overload resolution takes place only after name lookup, you > can't expect overload resolution to pick C1::f, when you're already in > trouble with (1). > > -- Gaby > Hi. I can add that you can read further about it in B. Stroustrup "The C++ Programming Language". Exactly this case is explained there. Regards, Dima.