[Bug libstdc++/119880] fwide must be called before and after std::wcout to change wide orientation to allow std::cout works

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119880

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It looks like libc++ uses codecvt to convert wide strings to narrow and then
always uses byte-oriented I/O on the standard streams.