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/TextComponent/CorrectTextComponentSelectionTest.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2005, 2026, 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
+ * @key headful
+ * @bug 5100806
+ * @summary TextArea.select(0,0) does not de-select the selected text properly
+ * @run main CorrectTextComponentSelectionTest
+ */
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.EventQueue;
+import java.awt.Frame;
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.TextArea;
+import java.awt.TextComponent;
+import java.awt.TextField;
+
+public class CorrectTextComponentSelectionTest {
+    static TextField tf = new TextField("TextField");
+    static TextArea ta = new TextArea("TextArea");
+    static Robot r;
+    static Frame frame;
+    static volatile Color color_center;
+
+    public static void main(String[] args) throws Exception {
+        try {
+            r = new Robot();
+            EventQueue.invokeAndWait(() -> initialize());
+            r.waitForIdle();
+            r.delay(1000);
+
+            test(tf);
+            test(ta);
+            System.out.println("Test Passed!");
+        } finally {
+            EventQueue.invokeAndWait(() -> {
+                if (frame != null) {
+                    frame.dispose();
+                }
+            });
+        }
+    }
+
+    public static void initialize() {
+        frame = new Frame("TextComponent Selection Test");
+        frame.setLayout(new BorderLayout());
+
+        // We should place to the text components the long strings in order to
+        // cover the components by the selection completely
+        tf.setText(" ".repeat(50));
+        // We check the color of the text component in order to find out the
+        // bug reproducible situation
+        tf.setForeground(Color.WHITE);
+        tf.setBackground(Color.WHITE);
+
+        ta.setText((" ".repeat(50) + "\n").repeat(50));
+        ta.setForeground(Color.WHITE);
+        ta.setBackground(Color.WHITE);
+
+        frame.add(tf, "North");
+        frame.add(ta, "South");
+        frame.setSize(200, 200);
+        frame.setVisible(true);
+    }
+
+    private static void test(TextComponent tc) throws Exception {
+        if (tc instanceof TextField) {
+            System.out.println("TextField testing ...");
+        } else if (tc instanceof TextArea) {
+            System.out.println("TextArea testing ...");
+        }
+
+        r.waitForIdle();
+        r.delay(100);
+
+        EventQueue.invokeAndWait(() -> {
+            tc.requestFocus();
+            tc.selectAll();
+            tc.select(0, 0);
+        });
+
+        r.waitForIdle();
+        r.delay(100);
+
+        EventQueue.invokeAndWait(() -> {
+            Point p = tc.getLocationOnScreen();
+            p.translate(tc.getWidth() / 2, tc.getHeight() / 2);
+            color_center = r.getPixelColor(p.x, p.y);
+        });
+
+        System.out.println("Color of the text component (CENTER) = " + color_center);
+        System.out.println("White color = " + Color.WHITE);
+
+        if (color_center.getRGB() != Color.WHITE.getRGB()) {
+            throw new RuntimeException("Test Failed");
+        }
+    }
+}