Re: [PATCH v7] coccinelle: tests: unsigned value cannot be lesser than zero

From	Michal Marek <mmarek@suse.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v7] coccinelle: tests: unsigned value cannot be lesser than zero
Date	2016-01-07 15:40 +0100
Message-ID	<qOjTl-SP-29@gated-at.bofh.it> (permalink)
References	<qNACT-3VY-31@gated-at.bofh.it> <qOfd0-6ef-19@gated-at.bofh.it> <qOh57-7sH-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, Jan 07, 2016 at 12:35:34PM +0100, Julia Lawall wrote:
> 
> On Thu, 7 Jan 2016, Andrzej Hajda wrote:
> 
> > Unsigned expressions cannot be lesser than zero. Presence of comparisons
> > 'unsigned (<|<=|>|>=) 0' often indicates a bug, usually wrong type of variable.
> > The patch beside finding such comparisons tries to eliminate false positives,
> > mainly by bypassing range checks.
> >
> > gcc can detect such comparisons also using -Wtype-limits switch, but it warns
> > also in correct cases, making too much noise.
> >
> > Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
> 
> Acked-by: Julia Lawall <julia.lawall@lip6.fr>

Thanks to both of you, applied to kbuild.git#misc now.

Michal
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[PATCH v6] coccinelle: tests: unsigned value cannot be lesser than zero Andrzej Hajda <a.hajda@samsung.com> - 2016-01-04 08:50 +0100
  Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero "Geyslan G. Bem" <geyslan@gmail.com> - 2016-01-05 14:00 +0100
    Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero Julia Lawall <julia.lawall@lip6.fr> - 2016-01-05 14:10 +0100
      Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero "Geyslan G. Bem" <geyslan@gmail.com> - 2016-01-05 15:20 +0100
        Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero "Geyslan G. Bem" <geyslan@gmail.com> - 2016-01-05 17:50 +0100
    Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser than  zero Andrzej Hajda <a.hajda@samsung.com> - 2016-01-05 15:00 +0100
      Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero "Geyslan G. Bem" <geyslan@gmail.com> - 2016-01-05 15:20 +0100
  Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser  than zero Julia Lawall <julia.lawall@lip6.fr> - 2016-01-05 15:20 +0100
    Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser than  zero Andrzej Hajda <a.hajda@samsung.com> - 2016-01-05 15:30 +0100
    [PATCH v7] coccinelle: tests: unsigned value cannot be lesser than zero Andrzej Hajda <a.hajda@samsung.com> - 2016-01-07 10:40 +0100
      Re: [PATCH v7] coccinelle: tests: unsigned value cannot be lesser  than zero Julia Lawall <julia.lawall@lip6.fr> - 2016-01-07 12:40 +0100
        Re: [PATCH v7] coccinelle: tests: unsigned value cannot be lesser  than zero Michal Marek <mmarek@suse.com> - 2016-01-07 15:40 +0100

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