From: Jeff Garzik <jgarzik@pobox.com>
To: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Avoiding "unused variable" warnings
Date: Sun, 13 Jul 2003 11:46:43 -0400 [thread overview]
Message-ID: <3F117EE3.5010200@pobox.com> (raw)
In-Reply-To: <200307131932.24015.arvidjaar@mail.ru>
Andrey Borzenkov wrote:
> I think I have seen it somewhere but forgot.
>
> Is it possible to create a noop macro that makes compiler believe macro
> arguments are used? I mean the case of debug macro that for debug off is
> redefined as something like do { } while(0) but then if arguments are used
> for debugging purposes only compiler emits warning. Some people do not like
> it :)
No need for a macro, just do
(void) var_name;
It doesn't generate any code, and it shuts up the compiler.
Jeff
next prev parent reply other threads:[~2003-07-13 15:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-13 15:32 Avoiding "unused variable" warnings Andrey Borzenkov
2003-07-13 15:46 ` Jeff Garzik [this message]
2003-07-13 16:22 ` Alan Cox
2003-07-13 16:45 ` Roman Zippel
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