linux-kernel - Re: [PATCH] coccinelle: if(ret)return ret; return ret; semantic patch

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Date:	Wed, 8 Jun 2011 09:24:16 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	Nicolas Palix <Nicolas.Palix@...ia.fr>
Cc:	Greg Dietsche <gregory.dietsche@....edu>, Gilles.Muller@...6.fr,
	cocci@...u.dk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] coccinelle: if(ret)return ret; return ret; semantic
 patch

On Wed, 8 Jun 2011, Nicolas Palix wrote:

> Hi,
> 
> On Wed, Jun 8, 2011 at 12:59 AM, Greg Dietsche <gregory.dietsche@....edu> wrote:
> > On 06/07/2011 04:54 PM, Nicolas Palix wrote:
> >>
> >> I remember me having worked on that but I cannot find any patch
> >> about it so your patch is more that welcome. Some users have requested it
> >> some months ago.
> >>
> >> As far as I can remember, with "M=" you can not use $srctree only but
> >> still
> >> need it for the -I for instance. I think I then run into a situation where
> >> I
> >> have an ambiguity about how to setup the flags for coccinelle, but I am
> >> sure
> >> about the reason I dropped my patch. Maybe I don't know well enough the
> >> build
> >> system and options...
> >>
> >> So, don't hesitate to submit your patch.
> >>
> >
> > I'll submit what I have done as a new thread / patch series. I've not done
> > much testing with it and am certainly not any kind of build system expert,
> > but it has worked well for me so far :) A few more people trying it out /
> > testing it would be a great idea.
> 
> I finally found the thread where we discuss this feature.
> http://lkml.org/lkml/2010/7/2/279
> 
> I haven't the time to test your patch right now but at the time
> the problem was in the patch mode which produces erroneous file names
> (in the lines with ---/+++).
> As far as I can remember, using the -dir and -patch options of
> coccinelle doesn't work with external modules.

Can you give a concrete example?  -patch is supposed to address the 
problem of undesired path elements, but perhaps it is not sufficient in 
this case.  There could be a problem of knowing what the argument to 
-patch should be?

julia 
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