CDV ❯ TC instrumented Hashtable breaks non-fail-fast behavior for keys() and values() views

• Type: Bug
• Status: Closed
• Priority: 2 Major
• Resolution: Fixed
• Component/s: Byte Code Transform
• Labels:

• Assignee: hhuynh
• Reporter: teck
• Created: May 12, 2008
• Votes: 0
• Watchers: 0
• Updated:

  July 01, 2008
• Resolved:

  June 16, 2008

Description

Using a plain vanilla Hashtable (ie. no dso-boot jar), one can freely create a keys() or values() view and safely traverse it while the underlying map is being modified.

I haven’t actually tried it yet, but some code like this will throw ConcurrentModificationException when a TC instrumented Hashtable is used, whereas the stock Hashtable will run fine:

    Hashtable ht = new Hashtable();
    ht.put("tim", "eck");
    Enumeration e = ht.keys();
    ht.put("bob", "bob");
    while (e.hasMoreElements()) {
        System.err.println(e.nextElement());
    }

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