linux-kernel - Re: [PATCH] iio: adc: replace comma with a semicolon

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170330180618.GD7900@w540>
Date:   Thu, 30 Mar 2017 20:06:18 +0200
From:   jacopo <jacopo@...ndi.org>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:     Arushi Singhal <arushisinghal19971997@...il.com>,
        outreachy-kernel@...glegroups.com,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: replace comma with a semicolon

Hi Alexandre
   hope you're doing good!

On Thu, Mar 30, 2017 at 07:23:12PM +0200, Alexandre Belloni wrote:
> On 30/03/2017 at 15:30:46 +0200, jacopo wrote:
> > Hi Arushi,
> >    thanks for your patch
> > 
> > On Thu, Mar 30, 2017 at 06:16:03PM +0530, Arushi Singhal wrote:
> > > Replace a comma between expression statements by a semicolon. This
> > > changes the semantics of the code, but given the current indentation
> > > appears to be what is intended.
> > > A simplified version of the Coccinelle semantic patch that performs this
> > > transformation is as follows:
> > > 
> > > // <smpl>
> > > @r@
> > > expression e1,e2;
> > > @@
> > > 
> > >  e1
> > > -,
> > > +;
> > >  e2;
> > > // </smpl>
> > > 
> > 
> > You can simply say that this fixes what appears to be a bug to me.
> > I wonder how this does even compile..
> > 
> 
> It is not a bug, it is perfectly valid and working as expected/intended.
> This is just a cosmetic change.
> 
> See https://en.wikipedia.org/wiki/Comma_operator if you want to
> understand.
> 

Thanks! That's valid and legal (I should have thought at multiple
expression in for(;;) as an example).
Ignore my comment then (I still don't think it was "intended" as it's
quite unusual to see commas there :)

Thanks
   j

> 
> -- 
> Alexandre Belloni, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com