1 files changed, 11 insertions, 9 deletions
diff --git a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/CastExpr.java b/src/com/sun/org/apache/xalan/internal/xsltc/compiler/CastExpr.java
index 07809ef..e6f0b45 100644
--- a/src/com/sun/org/apache/xalan/internal/xsltc/compiler/CastExpr.java
+++ b/src/com/sun/org/apache/xalan/internal/xsltc/compiler/CastExpr.java
@@ -1,15 +1,15 @@
 /*
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
  */
 /*
- * Copyright 2001-2004 The Apache Software Foundation.
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -51,7 +51,7 @@ final class CastExpr extends Expression {
     /**
      * Legal conversions between internal types.
      */
-    static private MultiHashtable InternalTypeMap = new MultiHashtable();
+    private static final MultiHashtable<Type, Type> InternalTypeMap = new MultiHashtable<>();
 
     static {
         // Possible type conversions between internal types
@@ -118,6 +118,8 @@ final class CastExpr extends Expression {
         InternalTypeMap.put(Type.Object, Type.String);
 
         InternalTypeMap.put(Type.Void, Type.String);
+
+        InternalTypeMap.makeUnmodifiable();
     }
 
     private boolean _typeTest = false;