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.

test/jdk/java/awt/Dialog/DialogDeadlockTest.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2004, 2023, 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.
+ */
+
+/*
+  @test
+  @bug 5006427
+  @summary Shows many modal dialog and checks if there is a deadlock or thread race.
+  @key headful
+  @run main DialogDeadlockTest
+*/
+
+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Dialog;
+import java.awt.EventQueue;
+import java.awt.Frame;
+import java.awt.Window;
+import java.lang.reflect.InvocationTargetException;
+import java.util.LinkedList;
+import java.util.List;
+
+public class DialogDeadlockTest {
+    public static final int MAX_COUNT = 200;
+    private static Dialog lastDialog;
+    private static Runnable r;
+    private static volatile int count;
+    private static volatile int cumul;
+
+    public static void main(String[] args) throws InterruptedException,
+            InvocationTargetException {
+        DialogDeadlockTest ddt = new DialogDeadlockTest();
+        ddt.start();
+    }
+
+    public void start() {
+        final Frame frame = new Frame("abc");
+        final List<Window> toDispose = new LinkedList<>();
+
+        try {
+            frame.setLocation(300, 0);
+            frame.add(new Button("def"));
+            frame.pack();
+            frame.setVisible(true);
+            cumul = 0;
+
+            r = new Runnable() {
+                public void run() {
+                    count++;
+                    if (count < 10) {
+                        Dialog xlastDialog = lastDialog;
+                        cumul += count;
+                        Dialog d = new Dialog(frame, "Dialog "
+                                + cumul, true);
+                        d.setLayout(new BorderLayout());
+                        d.add(new Button("button " + count), BorderLayout.CENTER);
+                        d.pack();
+                        toDispose.add(d);
+                        lastDialog = d;
+                        EventQueue.invokeLater(r);
+                        d.setVisible(true);
+                        if (xlastDialog != null) {
+                            xlastDialog.setVisible(false);
+                        } else {
+                            if (cumul < MAX_COUNT) {
+                                count = 0;
+                                lastDialog = null;
+                                EventQueue.invokeLater(r);
+                            }
+                        }
+                    } else {
+                        try {
+                            Thread.sleep(1000);
+                        } catch (InterruptedException ignore) {
+                        }
+                        lastDialog.setVisible(false);
+                        lastDialog = null;
+                    }
+                }
+            };
+            try {
+                EventQueue.invokeAndWait(r);
+            } catch (InterruptedException ignore) {
+            } catch (Exception e) {
+                throw new RuntimeException("Unexpected exception: "
+                        + e.getLocalizedMessage());
+            }
+            while (cumul < MAX_COUNT - 1) {
+                try {
+                    Thread.sleep(1000);
+                } catch (InterruptedException ignore) {}
+            }
+            System.out.println("Test PASSED");
+        } finally {
+            try {
+                EventQueue.invokeAndWait(() -> {
+                    frame.setVisible(false);
+                    frame.dispose();
+                    for (Window w: toDispose) {
+                        w.dispose();
+                    }
+                });
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            } catch (InvocationTargetException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+}