linux-kernel - RE: do { } while (0) question

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Message-ID: <008e01c6b549$59e52f70$493d010a@nuitysystems.com>
Date:	Tue, 1 Aug 2006 02:03:25 -0700
From:	"Hua Zhong" <hzhong@...il.com>
To:	"'Jiri Slaby'" <jirislaby@...il.com>,
	"'Heiko Carstens'" <heiko.carstens@...ibm.com>
Cc:	"'Andrew Morton'" <akpm@...l.org>, <linux-kernel@...r.kernel.org>,
	"'Martin Schwidefsky'" <schwidefsky@...ibm.com>
Subject: RE: do { } while (0) question

> #if KILLER == 1
> #define MACRO
> #else
> #define MACRO do { } while (0)
> #endif
> 
> {
> 	if (some_condition)
> 		MACRO
> 
> 	if_this_is_not_called_you_loose_your_data();
> }
> 
> How do you want to define KILLER, 0 or 1? I personally choose 0.

Really? Does it compile?

Hua

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