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Message-ID: <Pine.LNX.4.61.0608210005090.32565@yvahk01.tjqt.qr>
Date:	Mon, 21 Aug 2006 00:06:51 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Alan Stern <stern@...land.harvard.edu>
cc:	Ingo Molnar <mingo@...hat.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Jeff Garzik <jeff@...zik.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Andrew Morton <akpm@...l.org>, "Theodore Ts'o" <tytso@....edu>
Subject: Re: Complaint about return code convention in queue_work() etc.

>> >Mixing up these two sorts of representations is a fertile source of
>> >difficult-to-find bugs.  If the C language included a strong distinction
>> >between integers and booleans then the compiler would find these mistakes
>> >for us... but it doesn't.
>> 
>> Recently introduced "bool".
>
>I haven't seen the new definition of "bool", but it can't possibly provide 
>a strong distinction between integers and booleans.  That is, if x is 
>declared as an integer rather than as a bool, the compiler won't complain 
>about "if (x) ...".

Only Java will get you this distinction. I would be comfortable with a 
feature where conditionals (like if() and ?:) enforce a bool showing 
up in C/C++, but it's not easy to get into the mainline gcc.


Jan Engelhardt
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