linux-kernel - Re: [Cocci] spatch for trivial pointer comparison style?

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Message-ID: <alpine.DEB.2.10.1411141130470.2443@hadrien>
Date:	Fri, 14 Nov 2014 11:31:30 +0100 (CET)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
cc:	Joe Perches <joe@...ches.com>, Coccinelle <cocci@...teme.lip6.fr>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Cocci] spatch for trivial pointer comparison style?

On Fri, 14 Nov 2014, SF Markus Elfring wrote:

> > I don't think that the change is desirable in all cases.  There are
> > functions like kmalloc where NULL means failure and !p seems like the
> > reasonable choice.  But there maybe other cases where NULL is somehow
> > a meaningful value.
>
> How do you think about to adjust checks for null pointers not only
> in Linux source files but also in other applications?
> Are there any more software design challenges to consider with the
> definition of the preprocessor symbol "NULL"?

Other applications may have other preferences.

julia
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