[Bug libstdc++/116455] Should std::noop_coroutine() be constexpr?

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116455

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think the standard does not define it as constexpr which is why it is not
constexpr in libstdc++.