linux-kernel - Re: [PATCH] lib: fix scnprintf() if @size is == 0

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Message-ID: <1282696543.25208.29.camel@Joe-Laptop>
Date:	Tue, 24 Aug 2010 17:35:43 -0700
From:	Joe Perches <joe@...ches.com>
To:	Changli Gao <xiaosuo@...il.com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib: fix scnprintf() if @size is == 0

On Wed, 2010-08-25 at 08:10 +0800, Changli Gao wrote:
> On Wed, Aug 25, 2010 at 8:03 AM, Joe Perches <joe@...ches.com> wrote:
> > Isn't simpler to check size at the beginning of the function?
> It is a rare case, so don't slow down the normal users.

That's fine, but I don't like blinking that much
when I read code.

How about:

	if (i < size)
		return i;
	if (size)
		return i - 1;
	return 0;

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