[Bug c++/51501] New: decltype over-agressive SFINAE

[dave at boostpro dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51501

             Bug #: 51501
           Summary: decltype over-agressive SFINAE
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@boostpro.com


Please see attached, which fails to compile.  If you compile with -DWORKAROUND
you can "prove" to yourself that it ought to compile.