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Subject: Re: [RFC][PATCH] A generic boolean (version 6)
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Nicholas Miell <nmiell@comcast.net>
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Date: Fri, 28 Jul 2006 13:50:22 +0100
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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);