From: Giacomo Catenazzi <cate@debian.org>
To: Robert Love <rml@tech9.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] ALSA compiler warnings fixes
Date: Tue, 19 Nov 2002 12:30:21 +0100 [thread overview]
Message-ID: <3DDA20CD.8090502@debian.org> (raw)
In-Reply-To: <fa.h0vvikv.k5838k@ifi.uio.no>
> +#define snd_power_unlock(card) do { (void)(card); } while (0)
Why do we use in kernel:
do { (void)(foobar); } while (0)
instead of the simpler and normally used in std files (e.g. assert.h):
((void)(foobar),0)
?
The "do while(0)" is used for multi-statment macros, not the case for
void statment!
ciao
giacomo
next parent reply other threads:[~2002-11-19 11:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.h0vvikv.k5838k@ifi.uio.no>
2002-11-19 11:30 ` Giacomo Catenazzi [this message]
2002-11-18 20:53 [patch] ALSA compiler warnings fixes Robert Love
2002-11-18 21:01 ` Jeff Garzik
2002-11-18 21:47 ` Robert Love
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