# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2009-11-14 11:57:55
# Node ID b0741bf3c86f7a591de60fdb171c77b960a3da62
# Parent  da4a34d770bbac7395c0cd6441817903834666b8

(svn r18070) -Fix: some possible unwanted side effects if using some sorts of boolean expressions in DEBUG

diff --git a/src/debug.h b/src/debug.h
--- a/src/debug.h
+++ b/src/debug.h
@@ -29,7 +29,7 @@
 #ifdef NO_DEBUG_MESSAGES
 	#define DEBUG(name, level, ...) { }
 #else /* NO_DEBUG_MESSAGES */
-	#define DEBUG(name, level, ...) if (level == 0 || _debug_ ## name ## _level >= level) debug(#name, __VA_ARGS__)
+	#define DEBUG(name, level, ...) if ((level) == 0 || _debug_ ## name ## _level >= (level)) debug(#name, __VA_ARGS__)
 
 	extern int _debug_ai_level;
 	extern int _debug_driver_level;