linux-kernel - Re: void* arithmnetic

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Date:	Thu, 29 Nov 2007 20:31:39 +0800
From:	WANG Cong <xiyou.wangcong@...il.com>
To:	Benny Halevy <bhalevy@...asas.com>
Cc:	Ming Lei <tom.leiming@...il.com>,
	Jan Engelhardt <jengelh@...putergmbh.de>,
	"J.A. Magallón" <jamagallon@....com>,
	"Linux-Kernel," <linux-kernel@...r.kernel.org>
Subject: Re: void* arithmnetic

On Thu, Nov 29, 2007 at 09:38:46AM +0200, Benny Halevy wrote:
>On Nov. 29, 2007, 3:19 +0200, "Ming Lei" <tom.leiming@...il.com> wrote:
>> 2007/11/29, Jan Engelhardt <jengelh@...putergmbh.de>:
>>> On Nov 29 2007 01:05, J.A. Magallón wrote:
>>>> Since begin of the ages the build of the nvidia driver says things like
>>>> this:
>>>>
>>> Explicitly adding -Wpointer-arith to ones own Makefile is like
>>> admitting the code might be problematic. :->
>>>
>>>
>>> I think sizeof(void *) == 1 is taken as granted as sizeof(int) >= 4
>>> these days. Sigh.
>> sizeof(void *) == 4, sizeof(void)==1, :)
>well, sizeof(void *) == sizeof(unsigned long) maybe :)

I *heard* that on Win64 sizeof(void *) > sizeof(long). But it's off-topic
here. ;-)


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