linux-kernel - Re: [PATCH] use %p for pointers

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Date:	Wed, 11 Oct 2006 16:28:14 -0400
From:	Jakub Jelinek <jakub@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Al Viro <viro@....linux.org.uk>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>, torvalds@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] use %p for pointers

On Wed, Oct 11, 2006 at 11:45:10AM -0700, H. Peter Anvin wrote:
> Al Viro wrote:
> >
> >%p will do no such thing in the kernel.  As for the difference...  %x
> >might happen to work on some architectures (where sizeof(void 
> >*)==sizeof(int)),
> >but it's not portable _and_ not right.  %p is proper C for that...
> 
> It's really too bad gcc bitches about %#p, because that's arguably The 
> Right Thing.

It is correct that gcc warns about %#p, that invokes undefined behavior
in ISO C99.

	Jakub
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