[Bug general/5735] testCoreThenRunCommand(frysk.hpd.TestCoreCommand) test fails

["pmuldoon at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From pmuldoon at redhat dot com  2008-02-06 10:51 -------
Removing the injection of this message from frysk.step.SteppingEngine in
updateTerminating:

	    tse.setState(new StepTerminatedState(task, true));
	    if (signal != null)
		tse.setMessage(tse.getMessage()
			       + "Task " + task.getTid()
			       + " is terminating from signal " + signal);
	    else
		tse.setMessage(tse.getMessage()
			       + "Task " + task.getTid()
			       + " is exiting with status " + value);

	    steppingObserver.notifyNotBlocked(tse);

and the test passes. Looking at why, through the eventual change of execution:

Inside frysk/hpd/CLI.java, in the class SteppingObserver we see:

       public void update (Observable observable, Object arg) {
            TaskStepEngine tse = (TaskStepEngine) arg;
            if (!tse.isAlive()) {
		addMessage(tse.getMessage(), Message.TYPE_VERBOSE);
		tse.setMessage("");
		flushMessages();

If another message (say from the run command) alters the output of the message
buffer during flush, the concurrent exception error seems to happen.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=5735

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