linux-kernel - Re: [PATCH] connector: Some fixes for ia64 unaligned access errors

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Date:	Mon, 11 Dec 2006 19:41:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	matthltc@...ibm.com
Cc:	zaitcev@...hat.com, erikj@....com, guillaume.thouvenin@...l.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] connector: Some fixes for ia64 unaligned access errors

From: Matt Helsley <matthltc@...ibm.com>
Date: Mon, 11 Dec 2006 19:09:16 -0800

> Hmm, that GCC assumption conflicts with the prototypes of memcpy() I've
> seen.

When GCC expands __builtin_memcpy() internally it looks at the types
of the arguments, and what it knows about their guarenteed alignment.

memcpy()'s declaration of the first argument as "void *" has
zero influence upon any of this.
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