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Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion

From: Andreas Schwab <schwab at suse dot de>
To: "Michael Kerrisk \(man-pages\)" <mtk dot manpages at gmail dot com>
Cc: "libc-alpha\@sourceware.org" <libc-alpha at sourceware dot org>, Igor Liferenko <igor dot liferenko at gmail dot com>
Date: Mon, 21 Nov 2016 14:55:57 +0100
Subject: Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
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References: <CAKgNAkhjsE=OpLj=S9btNBQVj-OAr7Fd3y6RDp4M7SFkoPGHbg@mail.gmail.com> <mvm8tsd0zoq.fsf@hawking.suse.de> <CAKgNAkiZWYo4TdVhXhpiPhsdYBtMOJ0PWePTA2p1BKFBaWv=Ag@mail.gmail.com> <mvm37il0yxt.fsf@hawking.suse.de> <fb703f4f-6874-8820-1502-1ae09ebb74f6@gmail.com> <mvmy40dynbu.fsf@hawking.suse.de> <2046ed8b-ad23-84a7-8ead-253a8a8a934a@gmail.com>

On Nov 21 2016, "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com> wrote:

> To put things another way, why is this scenario different from
> the islower() example, where the cast to '(unsigned char)' is
> needed in portable code?

Because char is weird.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

References:
- Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Michael Kerrisk (man-pages)
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Andreas Schwab
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Michael Kerrisk (man-pages)
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Andreas Schwab
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Michael Kerrisk (man-pages)
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Andreas Schwab
- Re: Signedness of wchar_t and wint_t leads to problems with gcc -Wsign-conversion
  - From: Michael Kerrisk (man-pages)

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