http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60640
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- That is still too big, here is a smaller one: struct B { virtual unsigned f () const; }; struct C { virtual void f (); }; struct F { virtual unsigned f (bool) const; ~F (); }; struct J : C, F {}; struct G : J { unsigned f (bool) const { return 0; } }; struct H : B { H (int); unsigned f () const { return ((const F &) h).f (0); } G h; }; H h (0);