[Bug c++/91850] linker can not locate constexpr static class array member when code compiled without optimization

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91850

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
https://gcc.gnu.org/wiki/VerboseDiagnostics#missing_static_const_definition