linux-kernel - Re: Style Question

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Message-Id: <200703111641.52066.dhazelton@enter.net>
Date:	Sun, 11 Mar 2007 16:41:51 -0400
From:	Daniel Hazelton <dhazelton@...er.net>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Cong WANG <xiyou.wangcong@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: Style Question

On Sunday 11 March 2007 16:35:50 Jan Engelhardt wrote:
> On Mar 11 2007 22:15, Cong WANG wrote:
> > Another question is about NULL. AFAIK, in user space, using NULL is
> > better than directly using 0 in C. In kernel, I know it used its own
> > NULL, which may be defined as ((void*)0), but it's _still_ different
> > from raw zero.
>
> In what way?
>
> >So can I say using NULL is better than 0 in kernel?
>
> On what basis? Do you even know what NULL is defined as in
> (C, not C++) userspace? Think about it.

IIRC, the glibc and GCC headers define NULL as (void*)0  :)

>
>
> Jan


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