[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 #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And the C++ standard does not say anything about doing that, implying that the
libstdc++ behaviour is expected. Using std::cout makes stdout byte-oriented,
and using std::wcout makes it wide-oriented, and then it doesn't change.