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

[redi at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think that constructor could just be deleted, but it's fixed now. Thanks.