[Bug libstdc++/102270] std::tuple<>::swap missing constexpr specifier

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102270

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:734b2c2eedca50d966e22540fc136158c3633393

commit r12-3592-g734b2c2eedca50d966e22540fc136158c3633393
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Sep 15 21:53:35 2021 +0100

    libstdc++: Add missing 'constexpr' to std::tuple [PR102270]

    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

    libstdc++-v3/ChangeLog:

            PR libstdc++/102270
            * include/std/tuple (_Head_base, _Tuple_impl): Add
            _GLIBCXX20_CONSTEXPR to allocator-extended constructors.
            (tuple<>::swap(tuple&)): Add _GLIBCXX20_CONSTEXPR.
            * testsuite/20_util/tuple/cons/102270.C: New test.