Hi,

Here are Doug's Linked/HashMap changes, discussed in a previous thread, as a 
webrev:

  
http://cr.openjdk.java.net/~psandoz/tl/JDK-8023463-Linked-HashMap-bin-and-tree/webrev/

I also added some tests related to characteristics associated with fixing 
another bug.

Looking at the diffs will be tricky given there are so many changes.


I fixed unchecked warnings in LinkedHashMap, but have not done so for HashMap, 
where there are many more casts from Node to TreeNode. One way to solve that is 
with a static method:

    @SuppressWarnings("unchecked")
    static <K, V> TreeNode<K, V> asTreeNode(Node<K, V> n) {
        return (TreeNode<K, V>) n;
    }

but i dunno what the performance implications are. Perhaps it's best to simply 
stuff @SuppressWarnings on methods of TreeNode rather than trying to modify 
code just for the sake of reducing the scope.


A JPRT job has been kicked off.

I recommend when this code goes in we look closely at code coverage results to 
see if we are missing areas testing tree functionality and update/add new tests 
accordingly.

Paul.

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