https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 58910, which changed state.
Bug 58910 Summary: std::Tuple_impl is non constexpr when using identical userdefined structs as template-args https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58910 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED
