https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92786
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You still need a definition and not just a declaration even with constexpr.
Though I think a newer C++ standard changed that; try -std=c++17 :)
