[Bug libstdc++/103891] clang-13 fails to compile libstdc++'s std::variant>: error: attempt to use a deleted function

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103891

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Should libstdc++ work as is against clang++? Does it perhaps need a small 
>tweak?

it depends, It might be the case that clang does not implement all of C++20
that GCC implements either.


There is also PR 79424 which might be related to your reduced testcase.