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From: Arnd Bergmann <arnd.bergmann@de.ibm.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>,
	Kyle Moffett <mrmacman_g4@mac.com>,
	David Howells <dhowells@redhat.com>,
	Matthew Wilcox <matthew@wil.cx>,
	Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>,
	sfr@canb.auug.org.au,
	Linux Kernel Development <linux-kernel@vger.kernel.org>,
	linux-arch@vger.kernel.org
Subject: Re: [PATCH 1/4] LOG2: Implement a general integer log2 facility in the kernel [try #4]
Date: Mon, 9 Oct 2006 17:27:32 +0200	[thread overview]
Message-ID: <200610091727.34780.arnd.bergmann@de.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.62.0610091705070.16048@pademelon.sonytel.be>

On Monday 09 October 2006 17:05, Geert Uytterhoeven wrote:
> 
> On Mon, 9 Oct 2006, Arnd Bergmann wrote:
> > On Monday 09 October 2006 15:09, Geert Uytterhoeven wrote:
> > > On Mon, 9 Oct 2006, Jan Engelhardt wrote:
> > > > 
> > > > Ouch ouch ouch. It should better be
> > > > 
> > > > typedef uint32_t __u32;
> > > 
> > > You mean
> > > 
> > > #ifdef __KERNEL__
> > > typedef __u32 u32;
> > > #else
> > > // Assumed we did #include <stdint.h> before
> > > typedef uint32_t __u32;
> > > #endif
> > 
> > Why should that be a valid assumption? Right now, it works
> > if you don't include stdint.h in advance.
> 
> According to C99 section 7.18 you need to include <stdint.h> first.

Sorry, I need to rephrase: you can include <linux/types.h> without
including <stdint.h> first, and many people do that.
Relying on uint32_t would mean we break existing source.

	Arnd <><

  reply	other threads:[~2006-10-09 15:27 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-06 13:34 [PATCH 1/4] LOG2: Implement a general integer log2 facility in the kernel [try #4] David Howells
2006-10-06 13:34 ` [PATCH 2/4] LOG2: Alter roundup_pow_of_two() so that it can use a ilog2() on a constant " David Howells
2006-10-06 13:34 ` [PATCH 3/4] LOG2: Alter get_order() so that it can make use of " David Howells
2006-10-06 13:34 ` [PATCH 4/4] LOG2: Provide ilog2() fallbacks for powerpc " David Howells
2006-10-06 14:17 ` [PATCH 1/4] LOG2: Implement a general integer log2 facility in the kernel " Matthew Wilcox
2006-10-06 14:33   ` David Howells
2006-10-06 17:17   ` Christoph Lameter
2006-10-09 10:11     ` David Howells
2006-10-09 11:06       ` Christoph Lameter
2006-10-09 12:09         ` David Howells
2006-10-09 17:17           ` Christoph Lameter
2006-10-10  9:58             ` David Howells
2006-10-06 20:33 ` Jan Engelhardt
2006-10-06 20:39   ` Matthew Wilcox
2006-10-06 20:52     ` Jan Engelhardt
2006-10-09  8:06       ` David Howells
2006-10-09  8:36         ` Jan Engelhardt
2006-10-09  9:51           ` Kyle Moffett
2006-10-09 10:26             ` Arnd Bergmann
2006-10-09 10:32             ` Stephen Rothwell
2006-10-09 12:20             ` Jan Engelhardt
2006-10-09 12:54               ` David Howells
2006-10-09 20:00                 ` Jan Engelhardt
2006-10-09 20:36                   ` Andreas Schwab
2006-10-10  9:41                     ` Jan Engelhardt
2006-10-10 11:42                       ` Arnd Bergmann
2006-10-09 13:09               ` Geert Uytterhoeven
2006-10-09 14:52                 ` Arnd Bergmann
2006-10-09 15:05                   ` Geert Uytterhoeven
2006-10-09 15:27                     ` Arnd Bergmann [this message]
2006-10-09 15:31                       ` Geert Uytterhoeven
2006-10-09 16:47                         ` Arnd Bergmann
2006-10-10  7:55                           ` David Woodhouse
2006-10-10 12:12                             ` Arnd Bergmann
2006-10-10 12:23               ` David Howells
2006-10-07 23:50 ` Roman Zippel

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