[Bug libstdc++/52942] [4.7/4.8 Regression] using std::ref with a std::unordered_map fails to compile

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52942

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.1
            Summary|[4.7 Regression] using      |[4.7/4.8 Regression] using
                   |std::ref with a             |std::ref with a
                   |std::unordered_map fails to |std::unordered_map fails to
                   |compile                     |compile