From 73ebd04c68d4d039bc1dcea33bbd04f38838fb6e Mon Sep 17 00:00:00 2001
From: Matthew Jason Benson <mbenson@apache.org>
Date: Tue, 17 Jul 2007 20:20:17 +0000
Subject: [PATCH] refine clone()

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@557045 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/PropertyHelper.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/PropertyHelper.java b/src/main/org/apache/tools/ant/PropertyHelper.java
index 5c560a951..696c55201 100644
--- a/src/main/org/apache/tools/ant/PropertyHelper.java
+++ b/src/main/org/apache/tools/ant/PropertyHelper.java
@@ -950,10 +950,14 @@ public class PropertyHelper implements Cloneable {
      * @return the cloned PropertyHelper.
      * @since Ant 1.8
      */
-    public Object clone() {
+    public synchronized Object clone() {
         PropertyHelper result;
         try {
             result = (PropertyHelper) super.clone();
+            result.delegates = (Hashtable) delegates.clone();
+            result.properties = (Hashtable) properties.clone();
+            result.userProperties = (Hashtable) userProperties.clone();
+            result.inheritedProperties = (Hashtable) inheritedProperties.clone();
         } catch (CloneNotSupportedException e) {
             throw new BuildException(e);
         }