To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [2.4.23-pre3] Possible bug in fs/buffer.c
References: <200309081715.09657@bilbo.math.uni-mannheim.de>
	<je3cf7uw0f.fsf@sykes.suse.de>
	<1063036721.21084.55.camel@dhcp23.swansea.linux.org.uk>
From: Andreas Schwab <schwab@suse.de>
Date: Mon, 08 Sep 2003 18:04:45 +0200
In-Reply-To: <1063036721.21084.55.camel@dhcp23.swansea.linux.org.uk> (Alan
 Cox's message of "Mon, 08 Sep 2003 16:58:42 +0100")
Message-ID: <jellsztgf6.fsf@sykes.suse.de>
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Alan Cox <alan@lxorguk.ukuu.org.uk> writes:

> On Llu, 2003-09-08 at 16:42, Andreas Schwab wrote:
>> It's neither ugly, nor bogus.  The only 100% reliable way to assign the
>> maximum value to an unsigned integer is to use -1.
>
> Its not 100% reliable either 8).

Could you please elaborate?  Casting -1 to an unsigned type is guaranteed
to yield the maximum value for that type, at least since C89, but I think
even K&R C did get it right.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 N?rnberg
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"And now for something completely different."
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