How can I get the vtable pointer or name?

[Mike Sharov <msharov@xxxxxxxxxxxxxxxxxxxxx>]

I would like to get a pointer to the vtable of a class (C++) without
actually instantiating the class, for the purpose of calling a virtual
function. The idea is to have a virtual static member. Is there any way
to do this under gcc? Any ugly and unportable hack is fine as long as I
don't have to actually create the vtable's mangled name by hand.