linux-kernel - Re: [patch 5/7] make netfilter use strict integer types

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Message-ID: <49A5EA1E.5@zytor.com>
Date:	Wed, 25 Feb 2009 17:02:22 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jan Engelhardt <jengelh@...ozas.de>
CC:	arnd@...db.de, Sam Ravnborg <sam@...nborg.org>,
	Kyle McMartin <kyle@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Jaswinder Singh Rajput <jaswinderrajput@...il.com>,
	mingo@...hat.com, dwmw2@...radead.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org
Subject: Re: [patch 5/7] make netfilter use strict integer types

Jan Engelhardt wrote:
> On Thursday 2009-02-26 01:14, H. Peter Anvin wrote:
>>> [...]
>>> IMHO, __uXX should be replaced by uintX_t, but a move this great I
>>> will leave to future generations because there is just too much
>>> persisting opinions wrt. such proposal. As such I'd like to join
>>> and persist on my position and that uintX that we have should be kept.
>> We *CAN'T* replace __uXX with uintX_t.  Period, full stop, end of story.
> 
> Would the mindful master please elaborate why this is so, if it is
> indeed not a personal decision.

POSIX has strict rules as to what symbols you are allowed to present 
into the user-visible namespace.  This means you can't use these types 
for any header that may be indirectly included.

Since we can't use them in general, it's silly to use them for a 
minority of headers, which would then have different exposure rules than 
people otherwise can expect.

	-hpa

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