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Subject: Re: RFC: booleans and the kernel
From: Xavier Bestel <xavier.bestel@free.fr>
To: timothy.covell@ashavan.org
Cc: Oliver Xymoron <oxymoron@waste.org>,
        "Richard B. Johnson" <root@chaos.analogic.com>,
        Jeff Garzik <jgarzik@mandrakesoft.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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	<200201242123.g0OLNAL06617@home.ashavan.org.>
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Date: 24 Jan 2002 23:33:40 +0100
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le ven 25-01-2002 ? 22:24, Timothy Covell a ?crit :
> On Thursday 24 January 2002 14:39, Oliver Xymoron wrote:
> >
> > The compiler _will_ turn if(a==0) into a test of a with itself rather than
> > a comparison against a constant. Since PDP days, no doubt.
> 
> I thought that the whole point of booleans was to stop silly errors
> like 
> 
> if ( x = 1 )
> {
> 	printf ("\nX is true\n");
> }
> else
> {
> 	# we never get here...
> }
> 

gcc already warns you about such errors.

	Xav

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