[Bug c++/53039] [4.7 Regression] including breaks std::is_convertible with template-pack expansion

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53039

--- Comment #18 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-09-13 
10:31:18 UTC ---
Jason, are we still considering backporting something? It would be great - I
find the issue pretty annoying - but it's your call.