[libcxx-commits] [libcxx] [libc++] Make `std::reference_constructs_from_temporary` SFINAE friendly when the 1st template argument is not a reference type (PR #206679)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 requested changes to this pull request.

https://eel.is/c++draft/type.traits clearly says the arguments have to be complete types. This should be diagnosed.

https://github.com/llvm/llvm-project/pull/206679