linux-kernel - Re: [Cocci] coccinelle: Convert comma to semicolons (was Re: [PATCH] checkpatch: Add test for comma use that should be semicolon)

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Message-ID: <alpine.DEB.2.22.394.2009242221020.2615@hadrien>
Date:   Thu, 24 Sep 2020 22:21:38 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Thomas Gleixner <tglx@...utronix.de>
cc:     Joe Perches <joe@...ches.com>,
        Valdis Klētnieks <valdis.kletnieks@...edu>,
        kernel-janitors <kernel-janitors@...r.kernel.org>,
        kernelnewbies <kernelnewbies@...nelnewbies.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        cocci <cocci@...teme.lip6.fr>,
        Giuseppe Scrivano <gscrivan@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andy Whitcroft <apw@...dowen.org>
Subject: Re: [Cocci] coccinelle: Convert comma to semicolons (was Re: [PATCH]
 checkpatch: Add test for comma use that should be semicolon)



On Thu, 24 Sep 2020, Thomas Gleixner wrote:

> On Sat, Aug 22 2020 at 09:07, Julia Lawall wrote:
> > On Fri, 21 Aug 2020, Joe Perches wrote:
> >> True enough for a general statement, though the coccinelle
> >> script Julia provided does not change a single instance of
> >> for loop expressions with commas.
> >>
> >> As far as I can tell, no logic defect is introduced by the
> >> script at all.
> >
> > The script has a rule to ensure that what is changed is part of a top
> > level statement that has the form e1, e2;.  I put that in to avoid
> > transforming cases where the comma is the body of a macro, but it protects
> > against for loop headers as well.
>
> Right. I went through the lot and did not find something dodgy. Except
> for two hunks this still applies. Can someone please send a proper patch
> with changelog/SOB etc. for this?
>
> And of course that script really wants to be part of the kernel cocci
> checks to catch further instances.

I will try to get to it soon.  Thanks for checking all the cases.

julia


>
> Thanks,
>
>         tglx
>