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/sun/java2d/GdiRendering/GdiLockTest.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2002, 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.
+ */
+
+/*
+ * @test
+ * @bug 4693644
+ * @summary verifies that there are no artifacts due to copying with GDI
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual GdiLockTest
+*/
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Frame;
+import java.awt.Graphics;
+
+public class GdiLockTest {
+
+        static final String INSTRUCTIONS = """
+            A window will open up next to these instructions.
+            The text you see in that window should blink on and off.
+            If it never disappears, then the test has failed.
+        """;
+
+    public static void main(String[] argv) throws Exception {
+        PassFailJFrame.builder()
+                .title("GdiLockTest")
+                .instructions(INSTRUCTIONS)
+                .testTimeOut(5)
+                .rows(5)
+                .columns(45)
+                .testUI(GdiLockTest::createUI)
+                .build()
+                .awaitAndCheck();
+    }
+
+    private static Frame createUI() {
+        Frame f = new Frame("GdiLockTest");
+        f.setSize(300, 300);
+        GdiLockTestComponent test = new GdiLockTestComponent();
+        Thread t = new Thread(test);
+        f.add(test);
+        t.start();
+        return f;
+    }
+}
+
+class GdiLockTestComponent extends Component implements Runnable {
+
+    boolean textVisible = true;
+
+    public void paint(Graphics g) {
+        g.setColor(Color.white);
+        g.fillRect(0, 0, getWidth(), getHeight());
+        g.setColor(Color.black);
+        if (!textVisible) {
+            g.setClip(200, 200, 300, 300);
+        }
+        g.drawString("This text should be blinking", 10, 30);
+        if (!textVisible) {
+            g.setClip(0, 0, getWidth(), getHeight());
+        }
+    }
+
+    public void run() {
+        while (true) {
+            repaint();
+            textVisible = !textVisible;
+            try {
+                Thread.sleep(500);
+            } catch (Exception e) {}
+        }
+    }
+}