linux-kernel - Re: New filesystem for Linux

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Message-Id: <1162580419.12810.28.camel@localhost.localdomain>
Date:	Fri, 03 Nov 2006 19:00:19 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Oleg Verych <olecom@...wer.upol.cz>
Cc:	Andrew Morton <akpm@...l.org>,
	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
	Gabriel C <nix.or.die@...glemail.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: New filesystem for Linux

Ar Gwe, 2006-11-03 am 17:14 +0000, ysgrifennodd Oleg Verych:
> In gmane.linux.kernel, you wrote:
> []
> > From: Andrew Morton <akpm@...l.org>
> >
> > As Mikulas points out, (1 << anything) won't be evaluating to zero.
> 
> How about integer overflow ?

That is undefined in C and for some cases will not produce zero but roll
anything%32 bits and the like. If anyone is relying on 1 << foo becoming
zero they need fixing

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