<Swing Dev> [9] Review Request for 8145787: [TEST_BUG][PIT] javax/swing/undo/UndoManager/AbstractDocumentUndoConcurrentTest.java fails with CannotUndoException

[Alexander Scherbatiy]

On 12/22/2015 4:47 PM, Semyon Sadetsky wrote:
> Hello,
>
> Please review fix for JDK9:
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8145787
> webrev: http://cr.openjdk.java.net/~ssadetsky/8145787/webrev.00/
>
> This is a multithreading stress test in which the undo queue depth may 
> reach zero sometimes occasionally. The corresponding checks were added.
     What is the sequence of the threads leads that the exception is thrown?

    Thanks,
    Alexandr.

>
> --Semyon
>