linux-kernel - Re: [PATCH 09/14] tools lib traceevent: Get rid of die() in add

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Date:	Tue, 10 Dec 2013 08:47:28 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Ilia Mirkin <imirkin@...m.mit.edu>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH 09/14] tools lib traceevent: Get rid of die() in add_right()

Hi Steve,

On Mon, 9 Dec 2013 11:32:56 -0500, Steven Rostedt wrote:
> On Mon, 09 Dec 2013 15:59:26 +0900
> Namhyung Kim <namhyung@...nel.org> wrote:
>
>> Hi Ilia,
>> 
>> On Mon, 9 Dec 2013 01:28:26 -0500, Ilia Mirkin wrote:
>> > That should probably be
>> >
>> > if (!op->str.buffer)
>> 
>> Argh.. you're right!
>
> I was thinking that it was better to do it Namhyung's way, with:
>
> 	if (op->str.buffer == NULL)
>
> than my preferred way of:
>
> 	if (!op->str.buffer)
>
> because I thought this mistake is more prevalent with my way. But It's
> good to know that this bug happens regardless of which way you
> prefer ;-)

Well, while I prefer explicit "buf == NULL" style, I was using "!buf"
style at that time since the previous line of "!op->str.val" already
used that style so that's why the typo came in.  Just FYI. :)

Thanks,
Namhyung
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