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/font/TextLayout/MyanmarTextTest.java

@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2019, 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 8223558
+ * @key headful
+ * @summary Verifies that Myanmar script is rendered correctly:
+ *          two characters combined into one glyph
+ * @library /test/lib
+ * @build jtreg.SkippedException
+ * @run main MyanmarTextTest
+ */
+
+import java.awt.Font;
+import java.awt.GraphicsEnvironment;
+import java.util.Arrays;
+import java.util.List;
+import javax.swing.BorderFactory;
+import javax.swing.BoxLayout;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+import javax.swing.SwingConstants;
+import javax.swing.SwingUtilities;
+import javax.swing.WindowConstants;
+import javax.swing.plaf.TextUI;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Position;
+
+import jtreg.SkippedException;
+
+public class MyanmarTextTest {
+    private static final String TEXT = "\u1000\u103C";
+
+    private static final List<String> FONT_CANDIDATES =
+            List.of("Myanmar MN",
+                    "Padauk",
+                    "Myanmar Text",
+                    "Noto Sans Myanmar");
+
+    private static final String FONT_NAME = selectFontName();
+
+    private final JFrame frame;
+    private final JTextField myanmarTF;
+
+    private static volatile MyanmarTextTest mtt;
+
+    public static void main(String[] args) throws Exception {
+        if (FONT_NAME == null) {
+            throw new SkippedException("No suitable font found out of the list: "
+                    + String.join(", ", FONT_CANDIDATES));
+        }
+
+        try {
+            SwingUtilities.invokeAndWait(MyanmarTextTest::createUI);
+            SwingUtilities.invokeAndWait(mtt::checkPositions);
+        } finally {
+            SwingUtilities.invokeAndWait(mtt::dispose);
+        }
+    }
+
+    private static void createUI() {
+        mtt = new MyanmarTextTest();
+        mtt.show();
+    }
+
+    private MyanmarTextTest() {
+        frame = new JFrame("Myanmar Text");
+        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+
+        myanmarTF = new JTextField(TEXT);
+        myanmarTF.setFont(new Font(FONT_NAME, Font.PLAIN, 40));
+
+        JPanel main = new JPanel();
+        main.setLayout(new BoxLayout(main, BoxLayout.Y_AXIS));
+        main.add(myanmarTF);
+
+        main.setBorder(BorderFactory.createEmptyBorder(7, 7, 7, 7));
+
+        frame.getContentPane().add(main);
+    }
+
+    private void show() {
+        frame.pack();
+        frame.setLocationByPlatform(true);
+        frame.setVisible(true);
+    }
+
+    private void dispose() {
+        frame.dispose();
+    }
+
+    private void checkPositions() {
+        final TextUI ui = myanmarTF.getUI();
+        final Position.Bias[] biasRet = new Position.Bias[1];
+        try {
+            if (2 != ui.getNextVisualPositionFrom(myanmarTF, 0,
+                    Position.Bias.Forward, SwingConstants.EAST, biasRet)) {
+                throw new RuntimeException("For 0, next position should be 2");
+            }
+            if (2 != ui.getNextVisualPositionFrom(myanmarTF, 1,
+                    Position.Bias.Forward, SwingConstants.EAST, biasRet)) {
+                throw new RuntimeException("For 1, next position should be 2");
+            }
+            if (0 != ui.getNextVisualPositionFrom(myanmarTF, 2,
+                    Position.Bias.Forward, SwingConstants.WEST, biasRet)) {
+                throw new RuntimeException("For 2, prev position should be 0");
+            }
+        } catch (BadLocationException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static String selectFontName() {
+        return Arrays.stream(GraphicsEnvironment
+                             .getLocalGraphicsEnvironment()
+                             .getAvailableFontFamilyNames())
+                     .filter(FONT_CANDIDATES::contains)
+                     .findFirst()
+                     .orElse(null);
+    }
+
+}