[Bug c++/44267] SFINAE does not handle down static_cast over virtual inheritance

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44267

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-09-23 22:50:50 UTC ---
Looks like we need to pass complain down into build_base_path.