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

[paolo.carlini at oracle dot com]

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

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |bkoz at redhat dot com,
                   |                            |fdumont at gcc dot gnu.org

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-12 
09:03:45 UTC ---
I see, thanks. Then, short term shall we just change the derivation to public
(with a comment)? Then, in mainline either somebody will do the sfinae bits
(even me ;) I mean to seriously look into it), or something else can be
changed. Seems a good way forward.