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https://issues.apache.org/jira/browse/PROTON-685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14166746#comment-14166746
 ] 

ASF subversion and git services commented on PROTON-685:
--------------------------------------------------------

Commit 1630806 from [~gsim] in branch 'proton/branches/examples'
[ https://svn.apache.org/r1630806 ]

PROTON-685: iterate on a copy of the values to prevent CME after the child 
free() calls  modifies the map

> calling free() on session with multiple Sender or Receiver links leads to 
> ConcurrentModificationException
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: PROTON-685
>                 URL: https://issues.apache.org/jira/browse/PROTON-685
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-j
>            Reporter: Robbie Gemmell
>            Assignee: Robbie Gemmell
>             Fix For: 0.8
>
>         Attachments: 
> 0003-PROTON-685-python-test-which-doesnt-run-against-prot.patch
>
>
> If a session (or in this case, actually its parent connection) has free() 
> called on it with multiple Sender or Receiver links then a 
> ConcurrentModificationException is thrown during the process due to modifying 
> a map whilst iterating its values.



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