undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/awt/Choice/DeadlockTest.java
+++ b/test/jdk/java/awt/Choice/DeadlockTest.java
@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 1998, 2024, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.BorderLayout;
+import java.awt.Choice;
+import java.awt.Frame;
+import jdk.test.lib.Platform;
+
+/*
+ * @test
+ * @bug 4134619
+ * @summary    Tests that the EventDispatchThread doesn't deadlock with
+ *             user threads which are modifying a Choice component.
+ * @library /java/awt/regtesthelpers /test/lib
+ * @build PassFailJFrame jdk.test.lib.Platform
+ * @run main/manual DeadlockTest
+ */
+
+public class DeadlockTest extends Thread {
+
+    static volatile Choice choice1;
+    static volatile Choice choice2;
+    static volatile Choice choice3;
+    static volatile Frame frame;
+    static int itemCount = 0;
+
+    private static final boolean isWindows = Platform.isWindows();
+
+    private static final String INSTRUCTIONS = """
+            Click on the top Choice component and hold the mouse still briefly.
+            Then, without releasing the mouse button, move the cursor to a menu
+            item and then again hold the mouse still briefly.
+            %s
+            Release the button and repeat this process.
+
+            Verify that this does not cause a deadlock
+            or crash within a reasonable amount of time.
+            """.formatted(
+                isWindows
+                    ? "(menu can automatically collapse sometimes, this is ok)\n"
+                    : ""
+
+    )       ;
+
+    public static void main(String[] args) throws Exception {
+        DeadlockTest deadlockTest = new DeadlockTest();
+        PassFailJFrame passFailJFrame = PassFailJFrame.builder()
+                .title("DeadlockTest Instructions")
+                .instructions(INSTRUCTIONS)
+                .columns(45)
+                .testUI(deadlockTest::createAndShowUI)
+                .build();
+
+        deadlockTest.start();
+
+        passFailJFrame.awaitAndCheck();
+    }
+
+   public Frame createAndShowUI() {
+       frame = new Frame("Check Choice");
+       frame.setLayout(new BorderLayout());
+       choice1 = new Choice();
+       choice2 = new Choice();
+       choice3 = new Choice();
+       frame.add(choice1, BorderLayout.NORTH);
+       frame.add(choice3, BorderLayout.CENTER);
+       frame.add(choice2, BorderLayout.SOUTH);
+       frame.pack();
+       return frame;
+   }
+
+    public void run() {
+        while (true) {
+            if (choice1 != null && itemCount < 40) {
+                choice1.add("I am Choice, yes I am : " + itemCount * itemCount);
+                choice2.add("I am the same, yes I am : " + itemCount * itemCount);
+                choice3.add("I am the same, yes I am : " + itemCount * itemCount);
+                itemCount++;
+            }
+            if (itemCount >= 20 && choice1 != null &&
+                    choice1.getItemCount() > 0) {
+                choice1.removeAll();
+                choice2.removeAll();
+                choice3.removeAll();
+                itemCount = 0;
+            }
+            frame.validate();
+            try {
+                Thread.sleep(1000);
+            } catch (Exception ignored) {}
+        }
+    }
+}