[Bug swing/24920] New: Text components giving assertion errors

[abalkiss at redhat dot com]

Many text components are giving the following assertion error basically at
start up or while doing other normal tasks.  

java.lang.AssertionError: Unexpected bad caret location: 0
   at javax.swing.text.DefaultCaret.setVisible (DefaultCaret.java:886)
   at javax.swing.text.DefaultCaret.focusGained (DefaultCaret.java:433)
   at java.awt.AWTEventMulticaster.focusGained (AWTEventMulticaster.java:260)
   at java.awt.Component.processFocusEvent (Component.java:3045)
   at java.awt.Component.processEvent (Component.java:2966)
   at java.awt.Container.processEvent (Container.java:926)
   at java.awt.Component.dispatchEventImpl (Component.java:4846)
   at java.awt.Container.dispatchEventImpl (Container.java:1665)
   at java.awt.Component.dispatchEvent (Component.java:2342)
   at java.awt.KeyboardFocusManager.redispatchEvent
(KeyboardFocusManager.java:1111)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent
(DefaultKeyboardFocusManager.java:219)
   at java.awt.EventDispatchThread.run (EventDispatchThread.java:74)


Attached is a test case demonstrating the bug and indicating why I think it's
happening - the JDK doesn't throw a BadLocationException before the text
component has been shown (or is valid, or something), but we throw it no matter
what and this is causing us to throw the Assertion Error.


-- 
           Summary: Text components giving assertion errors
           Product: classpath
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: swing
        AssignedTo: abalkiss at gcc dot gnu dot org
        ReportedBy: abalkiss at redhat dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24920