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Date: Sun, 30 Jan 2011 20:11:42 +0100
From: Gary Jennejohn <gljennjohn@googlemail.com>
To: Alexander Best <arundel@freebsd.org>
Message-ID: <20110130201142.09f4b998@ernst.jennejohn.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: empty function macros
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On Sun, 30 Jan 2011 17:29:41 +0000
Alexander Best <arundel@freebsd.org> wrote:

> hi there,
> 
> i noticed freebsd has a few of the following macros:
> 
> #define FUNC(sb)
> 
> when you do something like
> 
> if (cond)
>     FUNC(i)
> 
> the compiler complains about an if statement with an empty body. any sensible
> way of dealing with this issue?
> 
> i saw some reiserfs code which does the following to silence compilers:
> 
> #define FUNC(sb) do { } while (0)
> 

What happens if you treat it like a real function call and put ';'
after it?

-- 
Gary Jennejohn (gj@)