From 485c20f2f6c78a38b458f4edbefa63db5f7cd9fe Mon Sep 17 00:00:00 2001
From: Jacobus Martinus Kruithof <jkf@apache.org>
Date: Sun, 1 Feb 2009 22:19:57 +0000
Subject: [PATCH] Another thread-unsafe date formatter

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@739865 13f79535-47bb-0310-9956-ffa450edef68
---
 src/main/org/apache/tools/ant/util/DateUtils.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/org/apache/tools/ant/util/DateUtils.java b/src/main/org/apache/tools/ant/util/DateUtils.java
index c9216d262..36cfe965f 100644
--- a/src/main/org/apache/tools/ant/util/DateUtils.java
+++ b/src/main/org/apache/tools/ant/util/DateUtils.java
@@ -221,7 +221,9 @@ public final class DateUtils {
             tzMarker.append("0");
         }
         tzMarker.append(minutes);
-        return DATE_HEADER_FORMAT.format(cal.getTime()) + tzMarker.toString();
+        synchronized (DATE_HEADER_FORMAT) {
+            return DATE_HEADER_FORMAT.format(cal.getTime()) + tzMarker.toString();
+        }
     }
 
     /**