linux-kernel - Re: void* arithmnetic

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Message-ID: <Pine.LNX.4.64.0711301237430.746@anakin>
Date:	Fri, 30 Nov 2007 12:38:04 +0100 (CET)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	WANG Cong <xiyou.wangcong@...il.com>
Cc:	Benny Halevy <bhalevy@...asas.com>,
	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, 29 Nov 2007, WANG Cong wrote:
> 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. ;-)

Yes, Win64 is P64, to make sure it's incompatible with the rest of the
world.

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