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https://issues.apache.org/jira/browse/QPID-7306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15345122#comment-15345122
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ASF subversion and git services commented on QPID-7306:
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Commit 1749780 from [~aconway] in branch 'qpid/trunk'
[ https://svn.apache.org/r1749780 ]
QPID-7306: Memory management error in Link/Bridge
qpid::broker Link and Bridge use Connection::requestIOProcessing() to register
callbacks in the connection thread. They were binding a plain "this" pointer to
the callback, but the classes are managed by boost::shared_ptr so if all the
shared_ptr were released, the callback could happen on a dangling pointer.
This fix uses boost::weak_ptr in the callbacks, so if all shared_ptr instances
are released, we don't use the dead pointer.
Link::destroy cannot be skipped, so use a shared_ptr for that.
> Fix memory bugs and race conditions found in a Qpid HA deployment
> -----------------------------------------------------------------
>
> Key: QPID-7306
> URL: https://issues.apache.org/jira/browse/QPID-7306
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Affects Versions: 0.32
> Reporter: Alan Conway
> Assignee: Alan Conway
>
> Bugs related to thread safety and lifecycle of Links/Bridges, management
> objects and Queues. These were discovered in a HA environment but most of the
> issues could theoretically affect a stand alone broker also. For more
> information see https://bugzilla.redhat.com/show_bug.cgi?id=1333767
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