wcwidth broken with gcc 16

[ASSI]

Thomas Wolff via Cygwin writes:
> The patch is already on the newlib mailing list.

The input parameter is supposed to be wchar_t, not wint_t (per POSIX and
also the previous implementation), so I#d leave that alone.

> Yeah, I forgot to type-extend also the include file back in 2018 :-(
> but that made no difference so far, only now in gcc 16, as explained
> by Drea in that issue:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125451#c16

Just pun the type in the stub implementation, which would automatically
happen (I think) since there's already an assignment of the input
parameter from the POSIX wcwidth (wchar_t) to a local variable that has
type wint_t.  And since that's not a function call but an assignment,
the promotion rules should be correct for your application without any
cast.


Regards,
Achim.
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