linux-kernel - Re: [PATCH] coccinelle: tests: unsigned value cannot be lesser than zero

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Message-ID: <55F816BC.5050407@users.sourceforge.net>
Date:	Tue, 15 Sep 2015 15:01:48 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Andrzej Hajda <a.hajda@...sung.com>
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	Joe Perches <joe@...ches.com>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Michal Marek <mmarek@...e.com>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, cocci@...teme.lip6.fr
Subject: Re: [PATCH] coccinelle: tests: unsigned value cannot be lesser than
 zero

> +@r depends on context || org || report@
> +position p;
> +typedef u8, u16, u32, u64;

Can the involved data types be restricted for unsigned types for such
a source code analysis in a more general way?


> +{unsigned char, unsigned short int, unsigned int, unsigned long, unsigned long long, size_t, u8, u16, u32, u64} v;
> +@@
> +
> +(
> +*v@p < 0
> +|
> +*v@p >= 0
> +)

How do you think about to use the following SmPL wording instead?

 v@p
(
*< 0
|
*<= 0
)

Regards,
Markus
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