linux-kernel - Re: [PATCH] linux/string.h: Introduce streq macro.

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Message-ID: <BANLkTimPJQ4QvbBVOURx_Jmuhwnf=zK9tQ@mail.gmail.com>
Date:	Wed, 27 Apr 2011 10:42:09 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Thiago Farina <tfransosi@...il.com>,
	Joe Perches <joe@...ches.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] linux/string.h: Introduce streq macro.

On Wed, Apr 27, 2011 at 10:29, Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
> On Tue, Apr 26, 2011 at 9:58 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
>> On Tue, 2011-04-26 at 16:47 -0300, Thiago Farina wrote:
>>
>>> > $ grep -rP --include=*.[ch] "\bstrcmp.*==\s*0\b" * | wc -l
>>> > 1143
>>> > $ grep -rP --include=*.[ch] "\!\s*strcmp\s*\(" *  | wc -l
>>> > 1663
>>> >
>>> > Can you count how many misuses of strcmp have been
>>> > corrected?
>>>
>>> > Do you plan to convert the existing 2800?
>>>
>>> I'd work on this without any problem.
>>
>> Nothing a perl script can't do either.
>
> If you are really going to do that, please use a coccinelle's semantic
> patch (which is designed precisely for that purpose) and document it
> so that it can be included in the standard set of semantic patches
> applied to the kernel regularly, i.e. something like:

First, I agree (mildly) with the opponents: strcmp() is standard C99.
Second, as the goal is to avoid bugs, this conversion should not be blindly
done by a script and be done with it, but reviewed by a human.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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