[Bug libstdc++/60970] Support std::hash with enum types (LWG 2148)

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60970

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Jul 29 12:41:23 2015
New Revision: 226347

URL: https://gcc.gnu.org/viewcvs?rev=226347&root=gcc&view=rev
Log:
2015-07-29  Ville Voutilainen  <ville.voutilai...@gmail.com>

        PR libstdc++/60970
        * include/bits/functional_hash.h (__hash_enum): New.
        (hash): Derive from __hash_enum.
        * testsuite/20_util/hash/60970.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/20_util/hash/60970.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/functional_hash.h