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https://issues.apache.org/jira/browse/LANG-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Yandell updated LANG-544:
-------------------------------
Fix Version/s: 3.0
> ToStringStyle.registry ThreadLocal initialValue should return a Set that
> implements reference equality checking instead of object equality
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LANG-544
> URL: https://issues.apache.org/jira/browse/LANG-544
> Project: Commons Lang
> Issue Type: Bug
> Affects Versions: 2.4
> Reporter: Michael Richards
> Fix For: 3.0
>
>
> ToStringStyle.registry ThreadLocal initialValue should return a Set that
> implements reference equality checking instead of object equality.
> This change would still protect against cyclical object graphs, but also
> protect against the following conditions:
> * Incorrect implementations of hashCode/equals for any objects in the object
> graph
> * Unintended side effects of the hashCode/equals methods for any objects in
> the object graph
> Unfortunately, Java versions prior to 1.6 do not provide a simple built-in
> mechanism to create such a Set. This issue is discussed here in detail:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4479578
> A possible work-around is to use an IdentityHashMap instead of a Set. This
> class is available in Java 1.4 and later.
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