If I remove items from a popup menu on Solaris, it crashes the Java VM.
There is no workaround for this problem.

Steps to use the test case:

1. Click right mouse on label. Popup shows up.
2. Slide over to "Sub Menu". There is nothing underneath.
3. Release popup.
4. Click on "Add Sub-Menu Items" button.
5. Click right mouse on label. Popup shows up.
6. Slide over to "Sub Menu". There are 3 items underneath.
7. Relase popup.
8. Click on "Clear Sub-Menu Items" button.
9. JDK crashes.

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class PopupMenuTest extends Frame
implements ActionListener, MouseListener {

PopupMenu popup;
Menu submenu_p=new Menu("Sub Menu");
Label label=new Label("Click on this label to see the popup menu");

public void init() {
MenuItem mi;

setLayout(new BorderLayout());

popup = new PopupMenu();

popup.add( submenu_p );
popup.addSeparator();

mi = new MenuItem("Add Sub-Menu Items");
mi.addActionListener( this );
popup.add(mi);

mi = new MenuItem("Clear Sub-Menu Items");
mi.addActionListener( this );
popup.add(mi);

Button badd=new Button("Add Sub-Menu Items");
Button bclear=new Button("Clear Sub-Menu Items");
badd.addActionListener( this );
bclear.addActionListener( this );

label.add(popup);

enableEvents(AWTEvent.MOUSE_EVENT_MASK);

label.addMouseListener( this );

add( "West", badd );
add( "East", bclear );
add( "South", label);

setLocation(300, 300);
pack();
}

public void processMouseEvent(MouseEvent e) {

if (e.isPopupTrigger()) {
popup.show(e.getComponent(), e.getX(), e.getY());
}
super.processMouseEvent(e);
}

public void mouseClicked(MouseEvent e) { processMouseEvent(e); }
public void mousePressed(MouseEvent e) { processMouseEvent(e); }
public void mouseReleased(MouseEvent e) { processMouseEvent(e); }
public void mouseEntered(MouseEvent e) { processMouseEvent(e); }
public void mouseExited(MouseEvent e) { processMouseEvent(e); }

public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();

if (command.equals("Add Sub-Menu Items")) {
submenu_p.add( new MenuItem("Item 1") );
submenu_p.add( new MenuItem("Item 2") );
submenu_p.add( new MenuItem("Item 3") );
}
else if (command.equals("Clear Sub-Menu Items")) {
//
// THIS METHOD CRASHES THE JVM ON SOLARIS
//
submenu_p.removeAll();
}
}

public static void main( String argv[] )
{
PopupMenuTest pt=new PopupMenuTest();
pt.init();
pt.show();
}
}

nasser.nouri@Corp 1997-06-16