https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102090
--- Comment #4 from friedkeenan at protonmail dot com --- I think you're correct. That's really strange, but I guess that's what std::construct_at is for? But that also confuses me, how is GCC's implementation of std::construct_at working if placement-new isn't constexpr: https://github.com/gcc-mirror/gcc/blob/16e2427f50c208dfe07d07f18009969502c25dc8/libstdc%2B%2B-v3/include/bits/stl_construct.h#L97
