https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102270
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-11 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:63d91069ba8a9f1dc8bfa56ebfc10903a999f1cb commit r11-9104-g63d91069ba8a9f1dc8bfa56ebfc10903a999f1cb Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Sep 15 21:53:35 2021 +0100 libstdc++: Add missing 'constexpr' to std::tuple [PR102270] Signed-off-by: Jonathan Wakely <jwak...@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. (cherry picked from commit 734b2c2eedca50d966e22540fc136158c3633393)
