[Bug c++/54111] function return type template deduction

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54111

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-08-02 
10:18:44 UTC ---
FWIW Clang 3.2 accepts bug-int?.cc and rejects bug-u?.cc