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/event/MouseEvent/DragToLightweightTest.java

@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2001, 2025, 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 4417964
+ * @summary tests that drag events continue to arrive to heavyweight
+ *          when the mouse is moved to lightweight while dragging.
+ * @key headful
+ * @library /lib/client /java/awt/regtesthelpers
+ * @build ExtendedRobot Util
+ * @run main DragToLightweightTest
+*/
+
+import java.awt.Color;
+import java.awt.Container;
+import java.awt.Dimension;
+import java.awt.EventQueue;
+import java.awt.FlowLayout;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.HeadlessException;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import test.java.awt.regtesthelpers.Util;
+
+public class DragToLightweightTest {
+
+    private static final CountDownLatch latch = new CountDownLatch(1);
+    private static volatile MouseTest mouseTest;
+
+    public static void main(String[] args) throws Exception {
+
+        EventQueue.invokeAndWait(() -> mouseTest = new MouseTest());
+
+        try {
+            test();
+        } finally {
+            EventQueue.invokeAndWait(() -> {
+                if (mouseTest != null) {
+                    mouseTest.dispose();
+                }
+            });
+        }
+    }
+
+    private static void test() throws Exception {
+        ExtendedRobot robot = new ExtendedRobot();
+        robot.waitForIdle();
+        robot.delay(500);
+
+        Rectangle componentBounds = mouseTest.getLightweightComponentBounds();
+
+        robot.dragAndDrop(
+                componentBounds.x + componentBounds.width / 2, componentBounds.y + componentBounds.height + 30,
+                componentBounds.x + componentBounds.width / 2, componentBounds.y + 2 * componentBounds.height / 3
+        );
+
+        if (!latch.await(5, TimeUnit.SECONDS)) {
+            throw new RuntimeException("The test failed: no mouse release event received");
+        }
+
+        System.out.println("Mouse release event received, the test PASSED");
+    }
+
+    private static class MouseTest extends Frame {
+
+        final Foo foo;
+
+        public MouseTest() throws HeadlessException {
+            super("DragToLightweightTest");
+
+            setLayout(new FlowLayout());
+
+            addMouseListener(new MouseAdapter() {
+                @Override
+                public void mouseReleased(MouseEvent e) {
+                    System.out.println("mouseReleased");
+                    latch.countDown();
+                }
+            });
+
+            // Create a Component that will be a child of the Frame and add
+            // a MouseListener to it.
+            foo = new Foo();
+            foo.setBackground(Color.red);
+
+            System.out.println(foo.getPreferredSize());
+            foo.setPreferredSize(new Dimension(350, 200));
+            System.out.println(foo.getPreferredSize());
+
+            foo.addMouseListener(new DummyAdapter());
+
+            add(foo);
+
+            setSize(400, 400);
+            setLocationRelativeTo(null);
+            setVisible(true);
+        }
+
+        public Rectangle getLightweightComponentBounds() throws Exception {
+            return Util.invokeOnEDT(() -> {
+                Point locationOnScreen = foo.getLocationOnScreen();
+                Dimension size = foo.getSize();
+                return new Rectangle(locationOnScreen.x, locationOnScreen.y, size.width, size.height);
+            });
+        }
+
+        private static class Foo extends Container {
+            public void paint(Graphics g) {
+                g.setColor(getBackground());
+                g.fillRect(0, 0, getWidth(), getHeight());
+                g.setColor(Color.white);
+                g.drawString(getBounds().toString(), 5, 20);
+                super.paint(g);
+            }
+        }
+
+        private static class DummyAdapter extends MouseAdapter {}
+    }
+}