Name: dmR10075 Date: 08/21/2003


Run one of the test cases. They perform some stress testing, at the
middle of it ClassCastException occurs. There were catched two
exceptions so far:
java.lang.ClassCastException: java.awt.DefaultKeyboardFocusManager
        at sun.awt.SunToolkit.postEvent(SunToolkit.java:494)
        at sun.awt.X11.XWindow.postEvent(XWindow.java:303)
        at sun.awt.X11.XWindow.postEventToEventQueue(XWindow.java:312)
        at sun.awt.X11.XWindow.handleExposeEvent(XWindow.java:407)
        at sun.awt.X11.XBaseWindow.dispatchEvent(XBaseWindow.java:764)
        at
sun.awt.X11.XBaseWindow.dispatchToWindow(XBaseWindow.java:745)
        at sun.awt.X11.XToolkit.dispatchEvent(XToolkit.java:375)
        at sun.awt.X11.XToolkit.run(XToolkit.java:463)
        at sun.awt.X11.XToolkit.run(XToolkit.java:419)
        at java.lang.Thread.run(Thread.java:549)
 java.lang.ClassCastException: sun.awt.PostEventQueue
       at
sun.awt.SunToolkit.getSystemEventQueueImplPP(SunToolkit.java:703)
        at
sun.awt.SunToolkit.getSystemEventQueueImpl(SunToolkit.java:697)
        at java.awt.Toolkit.getEventQueue(Toolkit.java:1539)
        at java.awt.EventQueue.isDispatchThread(EventQueue.java:656)
        at java.awt.EventQueue.invokeAndWait(EventQueue.java:821)
        at java.awt.Window.dispose(Window.java:587)
        at MemLeakTest.main(MemLeakTest.java:16)

The problem happens with latest Tiger build, I tried b14-b15.

Test cases:
import java.awt.*;

public class MemLeakTest {

    public static void main(String[] str)
        throws Exception
    {
        for (int i=0; i<10000; i++) {
            Frame f = new Frame();
            TestDialog d = new TestDialog(f);
            
            f.addNotify(); // Create peer

            // No child, no parent will be disposed here,
            // but parent will be schuduled to dispose
            f.dispose();

            // Child will try to dispose parent coz he is scheduled
            d.kill();
            
            System.err.println("Test: iter=" + i);
        }
    }
}

class TestDialog extends Dialog {
    TestDialog(Frame f) {
        super(f);
    }
    public void kill() {
        super.dispose();
    }
    public void dispose() {
        hide();
    }
}
------------------------------------
import java.awt.*;
 
public class Test {
    public static void main(String [] args) {
        Point p;
        Frame frame = new Frame();
        frame.setBounds(100,100,100,100);
        ScrollPane sp = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
        Canvas canvas = new Canvas();
        canvas.setSize(300,300);
        sp.add(canvas);
        frame.add("Center",sp);
        frame.setVisible(true);
         
        for (int i=0;i<1000;i++) {
            p = new Point(i%100,i%100);
            sp.setScrollPosition(p);
            if (!sp.getScrollPosition().equals(p)) {
                System.out.println("Test Failed.");
                System.out.println(i+" : Expected "+p+", but Returned:
"+sp.getScrollPosition());
                frame.dispose();
                System.exit(0);
            }
        }
        System.out.println("Test Passed.");
        frame.dispose();
    }
}

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