[Bug libstdc++/94033] is_trivially_copy_constructible<> fails with compiler error on complicated object with private default constructor

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94033

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Probably another instance of PR 93983 and PR PR 93923.