[Bug libstdc++/66030] [5.1.0] std::codecvt_byname missing from libstdc++ DLL

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66030

--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, I'll deal with it.