From 59f1d6794540ce9f88d620aa1e76642b3484e378 Mon Sep 17 00:00:00 2001
From: Stefan Bodewig <bodewig@apache.org>
Date: Thu, 25 Sep 2008 12:34:28 +0000
Subject: [PATCH] don't add the same file more than once.  PR 45848.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@698947 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/AntClassLoader.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/AntClassLoader.java b/src/main/org/apache/tools/ant/AntClassLoader.java
index fd279c2ab..05f39a3b3 100644
--- a/src/main/org/apache/tools/ant/AntClassLoader.java
+++ b/src/main/org/apache/tools/ant/AntClassLoader.java
@@ -471,7 +471,9 @@ public class AntClassLoader extends ClassLoader implements SubBuildListener {
      * @throws IOException if data needed from the file cannot be read.
      */
     protected void addPathFile(File pathComponent) throws IOException {
-        pathComponents.addElement(pathComponent);
+        if (!pathComponents.contains(pathComponent)) {
+            pathComponents.addElement(pathComponent);
+        }
         if (pathComponent.isDirectory()) {
             return;
         }