Description of problem:

The delivery count for receiver's prefetched messages is increased even if the messages was not seen by the application.

# qpid-send --messages 3 --address "q;{create:sender}"
# qpid-receive --connection-options {protocol:amqp1.0} --print-headers true --messages 1 --address q
Properties: {sn:1, ts:1387456209158654200}
# qpid-receive --connection-options {protocol:amqp1.0} --print-headers true --messages 1 --address q
Redelivered: true
Properties: {sn:2, ts:1387456209158736790, x-amqp-delivery-count:1}

The redelivered flag is set to true and x-amqp-delivery-count is increased

When the capacity is set to be 0, the behavior is as expected:

# qpid-send --messages 10 --address "q;{create:sender}"
# qpid-receive --capacity 0 --connection-options {protocol:amqp1.0} --print-headers true --messages 1 --address q
Properties: {sn:1, ts:1387463670006783616}
# qpid-receive --capacity 0 --connection-options {protocol:amqp1.0} --print-headers true --messages 1 --address q
Properties: {sn:2, ts:1387463670006894302}

Version-Release number of selected component (if applicable):
qpid-cpp-*-0.22-29

How reproducible:
100%

Steps to Reproduce:
1. send a message using qpid-send (use default capacity)
2. receive single message
3. receive next message
4. the message is marked as redelivered and x-amqp-delivery-count is increased

Actual results:
Delivery count increased and redelivered flag set for prefetched messages

Expected results:
Messages that was not seen by the application shall not be marked redelivered and the delivery caount shall not be increased.

Additional info:

Not exactly sure what shall be the correct behavior here, feel free to change to doc bug when this issue will be identified as correct behavior.

See bug 975422, comment 2