Robbie Gemmell created AMQ-5890:
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             Summary: AMQP: possible NPE when handling disposition with 
Modified state
                 Key: AMQ-5890
                 URL: https://issues.apache.org/jira/browse/AMQ-5890
             Project: ActiveMQ
          Issue Type: Bug
          Components: AMQP
            Reporter: Robbie Gemmell
            Assignee: Robbie Gemmell
            Priority: Minor
             Fix For: 5.12.0


If a consumer sends a disposition with Modified state in which the 
'deliveryFailed' field is not populated, the broker will NPE. This is because 
the relevant value is a Boolean object rather than boolean primitive. That 
appears to be because there is actually no default value specified for the 
field in the specification, and it is defined only to be set when delivery 
actually failed (values that are not set are encoded nulls in the AMQP frame).

The implementation needs updated to handle this value being null, but will be 
left permissive of it being set false.



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