Shin Hong created COLLECTIONS-701:
-------------------------------------

             Summary: SetUniqueList.add() crashes due to infinite recursion 
when it receives itself
                 Key: COLLECTIONS-701
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-701
             Project: Commons Collections
          Issue Type: Bug
          Components: Collection
    Affects Versions: 3.2.2
            Reporter: Shin Hong


Hi.

We found that the following test case fails with a StackOverFlowError exception:
{code:java}
test() {        
   SetUniqueList l = new SetUniqueList(new LinkedList<Object>()) ;        
   l.add((Object) l) ;    
}{code}
The add() execution traps into an infinite recursion which crashes the program.

>From the stack trace, we found that the infinite recursion occurs

at AbstractList.hashCode() since it invokes hashCode() of each of its elements.

 



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