From f7490cfe01250efee9a54b0c2186d73f279bca9a Mon Sep 17 00:00:00 2001
From: Roman Divacky <rdivacky@FreeBSD.org>
Date: Sun, 21 Jun 2009 07:54:47 +0000
Subject: [PATCH] In non-debugging mode make this define (void)0 instead of
 nothing. This helps to catch bugs like the below with clang.

	if (cond);		<--- note the trailing ;
	   something();

Approved by:	ed (mentor)
Discussed on:	current@
---
 sys/kern/sysv_msg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/sysv_msg.c b/sys/kern/sysv_msg.c
index 89de07cabac..150d9bdf491 100644
--- a/sys/kern/sysv_msg.c
+++ b/sys/kern/sysv_msg.c
@@ -80,7 +80,7 @@ static int sysvmsg_modload(struct module *, int, void *);
 #ifdef MSG_DEBUG
 #define DPRINTF(a)	printf a
 #else
-#define DPRINTF(a)
+#define DPRINTF(a)	(void)0
 #endif
 
 static void msg_freehdr(struct msg *msghdr);