[Bug libstdc++/65978] missing constexpr on std::forward_as_tuple and std::tie (LWG issues 2275 and 2301)

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65978

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat May  2 11:20:03 2015
New Revision: 222719

URL: https://gcc.gnu.org/viewcvs?rev=222719&root=gcc&view=rev
Log:
        PR libstdc++/65978
        * include/std/tuple (forward_as_tuple, tie): Add constexpr.
        * testsuite/20_util/tuple/creation_functions/constexpr.cc: Uncomment
        and fix tests for forward_as_tuple and tie.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/tuple
    trunk/libstdc++-v3/testsuite/20_util/tuple/creation_functions/constexpr.cc