[Bug c++/55992] constexpr static member function not recognised in templated using statement

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55992

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
I see... So far I haven't been able to make much progress on c++/15272 itself,
thus feel free to reassign.