LIU Hao wrote
> 在 2026-2-12 18:20, Kirill Makurin 写道:
> > Both __mingw_{mbrtowc,wcrtomb}_cp are mingw-w64's private functions, so
> > there is no need to use `mbstate_t` the same way as CRT does. On top of
> > that, UCRT uses `long` member of `mbstate_t` the same way as MSVCRT uses
> > `mbstate_t` as whole with SBCS/DBCS code pages; both `short` members in
> > UCRT's `mbstate_t` are only used when converting UTF-8.
>
> Right, but what if `CP_UTF8` is passed, either indirectly or unintentionally
> in the future, on UCRT? It
> should be handled for UCRT.
I would say it applies not only to UCRT. One potential use for these functions
is converting/processing file names using active ANSI/OEM code pages (filenames
retuned by Win32 APIs), which can be CP_UTF8 even with pre-UCRT. So this is a
valid concern.
> The first patch looks good to me. I have pushed it now.
Ok, thanks!
- Kirill Makurin
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