LIU Hao wrote:
> I think libc++ requires those functions. OTOH libstdc++ doesn't, and creating
> a locale other than "C" or
> "POSIX" always throws an exception.
In theory, what libc++ could do is add two checks: one for
_create_locale/_free_locale and one for _configthreadlocale. If some function
is not available, libc++ could compile in simple stubbed implementation which
always fails.
While all _create_locale, _free_locale and _configthreadlocale were added in
msvcr80.dll, only _{free,create}_locale made it into msvcrt.dll (since Windows
8). I think adding _configthreadlocale to msvcrt.dll could break old
applications which did not have notion of thread locales in CRT.
- Kirill Makurin
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