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From Philippe Mouawad <>
Subject Issue in CheckDirty and its relation to ActionRouter
Date Mon, 28 Dec 2015 22:23:00 GMT
Currently there is an issue in ActionRouter#getInstance()
It returns a partially initialized object so a fix would be to use a local
object and affect it :
    public static ActionRouter getInstance() {
        if (router == null) {
            synchronized (LOCK) {
                if(router == null) {
                    ActionRouter router = new ActionRouter();
                    ActionRouter.router = router;
        return router;

But due to CheckDirty using getInstance() in its constructor to register
itself as a PreAction to ExitCommand, it leads to a StackoverflowError.

Even without fixing this issue, it reveals an issue that could occur if a
Constructor of an AbstractCommand subclass uses ActionRouter.getInstance()


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