linux-kernel - Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser than zero

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Date:	Tue, 5 Jan 2016 15:17:57 +0100 (CET)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Andrzej Hajda <a.hajda@...sung.com>
cc:	Julia Lawall <Julia.Lawall@...6.fr>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Michal Marek <mmarek@...e.com>,
	open list <linux-kernel@...r.kernel.org>,
	"moderated list:COCCINELLE/Semantic Patches (SmPL)" 
	<cocci@...teme.lip6.fr>
Subject: Re: [PATCH v6] coccinelle: tests: unsigned value cannot be lesser
 than zero

> +@...ipt:python depends on org@
> +p << r_cmp.p;
> +e << r.e = "";
> +@@
> +
> +msg = "WARNING: Unsigned expression compared with zero: %s" % (e)
> +coccilib.org.print_todo(p[0], msg)
> +
> +@...ipt:python depends on report@
> +p << r_cmp.p;
> +e << r.e = "";
> +@@
> +
> +msg = "WARNING: Unsigned expression compared with zero: %s" % (e)
> +if e:
> +    coccilib.report.print_report(p[0], msg)

Is it intentional that these don't do the same thing?  The report case has
an if on e, while the org case does not.  If you don't want a report when e
doesn't have a value, you could just remove the = "" from the declaration of
e.  That is to give a default value of e, to allow the rule to be executed
when e doesn't have a value.

julia
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