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From "Kevin Zhou (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-6203) [classlib][luni] java.util.Hashtable.remove(.) throws StackOverflowError while RI doesn't
Date Tue, 12 May 2009 05:27:45 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-6203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708326#action_12708326
] 

Kevin Zhou commented on HARMONY-6203:
-------------------------------------

The below test case [1] shows that this also happens to the constructor of Hashtable. 

[1] Test Case:
public void test_HashTable_Constructor() {
    Hashtable hashTable = new Hashtable();
    hashTable.put(hashTable, hashTable.keySet());
    new Hashtable(hashTable);
}

> [classlib][luni] java.util.Hashtable.remove(.) throws StackOverflowError while RI doesn't
> -----------------------------------------------------------------------------------------
>
>                 Key: HARMONY-6203
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6203
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>    Affects Versions: 5.0M9
>            Reporter: Kevin Zhou
>             Fix For: 5.0M10
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> Given a test case below [1], RI passes it while HARMONY throws a java.lang.StackOverflowError
error. The stack trace is given as [2], this error is thrown due to its hashCode method.
> [1] Test Case:
> public void test_HashTable_remove() {
>     Hashtable hashTable = new Hashtable();
>     Set keySet = hashTable.keySet();
>     hashTable.put(hashTable, keySet);
>     hashTable.remove(hashTable);
> }
> [2] Stack Trace:
> java.lang.StackOverflowError
> 	at java.util.Collections$SynchronizedCollection.iterator(Collections.java:449)
> 	at java.util.Hashtable.hashCode(Hashtable.java:541)
> 	at java.util.AbstractSet.hashCode(AbstractSet.java:79)
> 	at java.util.Collections$SynchronizedSet.hashCode(Collections.java:832)
> 	at java.util.Hashtable.hashCode(Hashtable.java:547)
> 	at java.util.AbstractSet.hashCode(AbstractSet.java:79)
> 	at java.util.Collections$SynchronizedSet.hashCode(Collections.java:832)

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