[tomcat] branch 8.5.x updated: Fix build

[remm]

This is an automated email from the ASF dual-hosted git repository.

remm pushed a commit to branch 8.5.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/8.5.x by this push:
     new ee732b4e45 Fix build
ee732b4e45 is described below

commit ee732b4e457343278f50d44f308ee1450b3639b5
Author: remm <r...@apache.org>
AuthorDate: Wed Sep 20 17:47:34 2023 +0200

    Fix build
---
 .../apache/tomcat/util/security/ConcurrentMessageDigest.java | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/java/org/apache/tomcat/util/security/ConcurrentMessageDigest.java 
b/java/org/apache/tomcat/util/security/ConcurrentMessageDigest.java
index e2be3a6edd..89ac51a424 100644
--- a/java/org/apache/tomcat/util/security/ConcurrentMessageDigest.java
+++ b/java/org/apache/tomcat/util/security/ConcurrentMessageDigest.java
@@ -113,11 +113,13 @@ public class ConcurrentMessageDigest {
      *                                  JVM
      */
     public static void init(String algorithm) throws NoSuchAlgorithmException {
-        if (!queues.containsKey(algorithm)) {
-            MessageDigest md = MessageDigest.getInstance(algorithm);
-            Queue<MessageDigest> queue = new ConcurrentLinkedQueue<>();
-            queue.add(md);
-            queues.putIfAbsent(algorithm, queue);
+        synchronized (queues) {
+            if (!queues.containsKey(algorithm)) {
+                MessageDigest md = MessageDigest.getInstance(algorithm);
+                Queue<MessageDigest> queue = new ConcurrentLinkedQueue<>();
+                queue.add(md);
+                queues.put(algorithm, queue);
+            }
         }
     }
 }


---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org
For additional commands, e-mail: dev-h...@tomcat.apache.org