Github user rhs commented on the pull request:
https://github.com/apache/qpid-proton/pull/23#issuecomment-96734626
I'm a little puzzled as to why the test change would be necessary. Pump has
been written to keep looping until there is no I/O left to perform for any of
its messengers. Given that the receiving messenger has issued credit, and the
sending messenger has posted messages for transfer, I think this is probably
somehow indicative of a real bug somewhere (possibly in some of the test
framework code). How easy is it to reproduce this on a mac?
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