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Subject: Re: iswcntrl() regression
To: cygwin AT cygwin DOT com
References: <24530320 DOT 43gEWRNkUz AT omega>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <cd4691c0-da99-46b5-6001-594499a8d2fa@towo.net>
Date: Wed, 19 Dec 2018 14:25:24 +0100
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On 19.12.2018 13:53, Bruno Haible wrote:
> Hi,
>
> POSIX [1] requires that iswcntrl (EOF) == 0.
Interesting special case, as EOF is not a character.
In newlib/libc/ctype, this could be fixed in iswcntrl_l.c as a special 
condition, or injected as a special case in the categories.t table.
Are there any other special requirements concerning EOF?
Thomas

>
> This was true in         CYGWIN_NT-10.0 2.9.0(0.318/5/3) (x86_64)
> but is no longer true in CYGWIN_NT-10.0 2.11.1(0.329/5/3) (x86_64).
> (Reported by Assaf Gordon.)
>
> Looking at the changes that occurred in the cygwin git between
> 2.9.0 (on 2017-08-03) and 2.11.1 (on 2018-08-31)
> it appears to me that the culprit is the commit
> 41f72ab4d7c404b8ac2a5e1187d79164992e4483 (on 2018-03-09).
>
> I would like to CC its author, Thomas Wolff, but he gave an invalid
> email address <mintty AT users DOT noreply DOT github DOT com> in the commit.
>
> This regression was found by gnulib's test suite
> https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=tests/test-wctype-h.c
>
> Bruno
>
>
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