--- a/langtools/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Wed Jun 19 13:00:00 2013 +0100
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/TreeInfo.java	Wed Jun 19 22:07:05 2013 +0100
@@ -74,8 +74,11 @@
         context.put(treeInfoKey, this);
 
         Names names = Names.instance(context);
-        setOpname(POS, "+", names);
-        setOpname(NEG, names.hyphen);
+        /*  Internally we use +++, --- for unary +, - to reduce +, - operators
+         *  overloading
+         */
+        setOpname(POS, "+++", names);
+        setOpname(NEG, "---", names);
         setOpname(NOT, "!", names);
         setOpname(COMPL, "~", names);
         setOpname(PREINC, "++", names);