http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46455
--- Comment #34 from Jonathan Wakely <redi at gcc dot gnu.org> 2010-11-18 00:29:20 UTC --- (In reply to comment #33) > If we need __is_same / __are_same, maybe we can just include > bits/cpp_type_traits.h aha, thanks for the pointer to are_same, I was going to move __gnu_debug::__is_same into ext/type_traits.h and use that, I didn't know about are_same. complete patch coming soon ...