linux-kernel - Re: [PATCH] drivers: net: ethernet: intel: e1000: e1000

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Message-ID: <1408375914.2741.1.camel@joe-AO725>
Date:	Mon, 18 Aug 2014 08:31:54 -0700
From:	Joe Perches <joe@...ches.com>
To:	Alexander Duyck <alexander.h.duyck@...el.com>
Cc:	Krzysztof Majzerowicz-Jaszcz <cristos@...serv.org>,
	jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: net: ethernet: intel: e1000: e1000_ethtool.c
 coding style fixes

On Mon, 2014-08-18 at 08:29 -0700, Alexander Duyck wrote:
> Doing any kind of pointer math on a void pointer is generally unsafe as
> it is an incomplete type.  The only reason why it works in GCC is
> because GCC has a nonstandard extension that makes it report as having a
> size of 1.

I know.  It's used in quite a few places in kernel code
so I believe it's now a base assumption for the kernel.



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