linux-kernel - Re: [RFC][PATCH] A generic boolean (version 6)

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Message-Id: <1154091022.13509.112.camel@localhost.localdomain>
Date:	Fri, 28 Jul 2006 13:50:22 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Nicholas Miell <nmiell@...cast.net>
Cc:	ricknu-0@...dent.ltu.se, Arnd Bergmann <arnd.bergmann@...ibm.com>,
	linux-kernel@...r.kernel.org, Andrew Morton <akpm@...l.org>,
	Jeff Garzik <jeff@...zik.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Vadim Lobanov <vlobanov@...akeasy.net>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Shorty Porty <getshorty_@...mail.com>,
	Peter Williams <pwil3058@...pond.net.au>,
	Michael Buesch <mb@...sch.de>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Stefan Richter <stefanr@...6.in-berlin.de>, larsbj@...lik.net,
	Paul Jackson <pj@....com>
Subject: Re: [RFC][PATCH] A generic boolean (version 6)

Ar Iau, 2006-07-27 am 13:13 -0700, ysgrifennodd Nicholas Miell:
> The compiler knows that "b = !!b;" is a no-op.

b = !!b isn't a no-op.

Try printf("%d", !!4);

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