ClassCastException when using include of java interface on ruby class that that 
inherits from Hash
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                 Key: JRUBY-4854
                 URL: http://jira.codehaus.org/browse/JRUBY-4854
             Project: JRuby
          Issue Type: Bug
          Components: Java Integration
    Affects Versions: JRuby 1.5.1, JRuby 1.5
            Reporter: Brian Olsen
         Attachments: JRuby-ClassCast-Test.tar.gz

When you include a java interface on a class that inherits from Hash you get a 
ClassCastException: "cannot be cast to org.jruby.RubyHash" when creating a new 
instance.

The problem only occurs when the class inherits from a class that itself 
inherits from Hash like OrderedHash in ActiveSupport. If you inherit directly 
from Hash there is no problem.


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