https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 65579, which changed state.
Bug 65579 Summary: [C++11] gcc requires definition of a static constexpr member even though it is not odr-used https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65579 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
