Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=49129

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@934238 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/java/org/apache/catalina/authenticator/DigestAuthenticator.java b/java/org/apache/catalina/authenticator/DigestAuthenticator.java
index 7714378..c246bb1 100644 (file)
--- a/java/org/apache/catalina/authenticator/DigestAuthenticator.java
+++ b/java/org/apache/catalina/authenticator/DigestAuthenticator.java
@@ -88,7 +88,7 @@ public class DigestAuthenticator
     /**
      * MD5 message digest provider.
      */
-    protected static MessageDigest md5Helper;
+    protected volatile static MessageDigest md5Helper;
 
 
     /**