[Bug libstdc++/95048] [9/10/11/12 Regression] wstring-constructor of std::filesystem::path throws for non-ASCII characters

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95048

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Christian Fersch from comment #9)
> But is it possible to query the value of -fwide-exec-charset? I had quick
> look and couldn't find anything.

It's possible now: __GNUC_WIDE_EXECUTION_CHARSET_NAME

https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html