[Bug libstdc++/127219] : make __valid_types_for_check_dynamic_spec static so check_dynamic_spec works with clang and EDG

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127219

--- Comment #3 from Drea Pinski <pinskia at gcc dot gnu.org> ---
>Since libstdc++ supports being used from clang

Not exactly. it is only supported for non-experimental language levels. For
C++20.