Index: /CKPackager/trunk/_source/includes/scriptcompressor.js
===================================================================
--- /CKPackager/trunk/_source/includes/scriptcompressor.js	(revision 6183)
+++ /CKPackager/trunk/_source/includes/scriptcompressor.js	(revision 6184)
@@ -173,5 +173,6 @@
 	};
 	// Taken from the ECMA-262.
-	isReserved.words = { 'break':1,'else':1,'new':1,'var':1,'case':1,'finally':1,'return':1,'void':1,'catch':1,'for':1,'switch':1,'while':1,'continue':1,'function':1,'this':1,'with':1,'default':1,'if':1,'throw':1,'delete':1,'in':1,'try':1,'do':1,'instanceof':1,'typeof':1,'abstract':1,'enum':1,'int':1,'short':1,'boolean':1,'export':1,'interface':1,'static':1,'byte':1,'extends':1,'long':1,'super':1,'char':1,'final':1,'native':1,'synchronized':1,'class':1,'float':1,'package':1,'throws':1,'const':1,'goto':1,'private':1,'transient':1,'debugger':1,'implements':1,'protected':1,'volatile':1,'double':1,'import':1,'public':1 };
+	// Additionally, "null" is reserved as null literals , "true" and "false" are reserved as boolean literals. (#6778)
+	isReserved.words = { 'true':1,'false':1,'null':1,'break':1,'else':1,'new':1,'var':1,'case':1,'finally':1,'return':1,'void':1,'catch':1,'for':1,'switch':1,'while':1,'continue':1,'function':1,'this':1,'with':1,'default':1,'if':1,'throw':1,'delete':1,'in':1,'try':1,'do':1,'instanceof':1,'typeof':1,'abstract':1,'enum':1,'int':1,'short':1,'boolean':1,'export':1,'interface':1,'static':1,'byte':1,'extends':1,'long':1,'super':1,'char':1,'final':1,'native':1,'synchronized':1,'class':1,'float':1,'package':1,'throws':1,'const':1,'goto':1,'private':1,'transient':1,'debugger':1,'implements':1,'protected':1,'volatile':1,'double':1,'import':1,'public':1 };
 
 	var getPropParts = function( propNode, parts )
Index: /CKPackager/trunk/test/test.js
===================================================================
--- /CKPackager/trunk/test/test.js	(revision 6183)
+++ /CKPackager/trunk/test/test.js	(revision 6184)
@@ -241,5 +241,9 @@
 		[	"o={prop1:1,1:'Fred','var':'Reserved','#':'XYZ','do-it':1};" ],
 
+		[	"o={'false':1,'true':1,'null':1};" ],
+
 		[	"o['#']['var']=1;" ],
+
+		[	"o['true']['false']['null']=1;" ],
 
 		[	"a.b+=1;" ],