[Bug c++/102357] The type specified by explicitly defaulted special member function that is different with it should have had is well-formed

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102357

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So I suspect it is/was DR 2221 :).
Basicallythe editorial changes resolved it.

So yes there is a change between C++17 and C++20.