[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 #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
An alias declaration seems necessary to trigger the bug, eg doesn't affect:

  template<unsigned P>
  struct my_array : A<pole(P)> { };