svn commit: r194575 - head/sys/kern

[Roman Divacky]

Author: rdivacky
Date: Sun Jun 21 07:54:47 2009
New Revision: 194575
URL: http://svn.freebsd.org/changeset/base/194575

Log:
  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@

Modified:
  head/sys/kern/sysv_msg.c

Modified: head/sys/kern/sysv_msg.c
==============================================================================
--- head/sys/kern/sysv_msg.c	Sun Jun 21 07:34:12 2009	(r194574)
+++ head/sys/kern/sysv_msg.c	Sun Jun 21 07:54:47 2009	(r194575)
@@ -80,7 +80,7 @@ static int sysvmsg_modload(struct module
 #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);