[OpenJDK 2D-Dev] JVM Crash: printing character \u0DDD in Swing app

Patrick Wright pdoubleya at gmail.com
Thu Nov 27 15:01:00 UTC 2008


First--if necessary, am glad to file a bug for this, but wanted to
check and see if there was something I'm missing.

In trying to render a table of characters using their Unicode
identifiers, I found that the character \u0DDD crashes my JVM as soon
as it is rendered to a Swing component. I'm not particularly
interested in that character--I am just trying to print out different
characters in different fonts to easily track which glyphs are
available per font. I found this by accident. I'm writing to this list
as I suspect (but don't know) that it may be an issue with the font

java -version
java version "1.6.0_10"
Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot(TM) Client VM (build 11.0-b15, mixed mode, sharing)

Ubuntu 8.10
uname -r

Small app that shows the problem:
import javax.swing.*;
import javax.swing.border.LineBorder;
import java.awt.*;
import java.awt.event.ActionEvent;

public class TestChar {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new TestChar().run();

    private void run() {
        JFrame frame = new JFrame("Test Character");
        JPanel panel = new JPanel();
        final JLabel label = new JLabel("(empty)");
        label.setSize(400, 100);
        label.setBorder(new LineBorder(Color.black));
        JButton button = new JButton("Set Char x0DDD");
        button.addActionListener(new AbstractAction() {
            public void actionPerformed(ActionEvent actionEvent) {


Run this, then click the button. On my Ubuntu system, clicking the
button causes an immediate crash of the VM. Have also tested on OS X
java -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06-153)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_07-b06-57, mixed mode)

and the VM _did not crash_.

Output in the Ubuntu console following the crash is attached.

If I should just file a bug for this, please let me know.

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