linux-kernel - Re: double exclamation (!!) suckage in the kernel

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Message-ID: <Pine.LNX.4.58.0705291022400.27110@be10.lrz>
Date:	Tue, 29 May 2007 10:26:05 +0200 (CEST)
From:	Bodo Eggert <7eggert@....de>
To:	Al Viro <viro@....linux.org.uk>
cc:	Bodo Eggert <7eggert@....de>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	David Miller <davem@...emloft.net>, satyam.sharma@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: double exclamation (!!) suckage in the kernel

On Sat, 26 May 2007, Al Viro wrote:

> On Sat, May 26, 2007 at 06:38:07PM +0200, Bodo Eggert wrote:
> > Not exactly, if(foo) is the same as if( (int) foo), which is not
> > guaranteed to result in non-null values for non-null pointers.
> 
> RTFStandard.

... and don´t forget half of it untill you look up the next thing.
Yes, obviously I misremembered "compares equal to" as "is".
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