[Bug libstdc++/66455] New: is_always_equal unimplemented

[potswa at mac dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66455

            Bug ID: 66455
           Summary: is_always_equal unimplemented
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: potswa at mac dot com
  Target Milestone: ---

std::allocator_traits does not contain a member is_equal, as required since
C++11.