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accbafc66f
In wait_any, we need to test for compound recv of serialized object that just got the size but not the body (that is, request[1] == null & handler != null).
Note that in:
if (current->m_requests[0] != MPI_REQUEST_NULL &&
(current->m_requests[1] != MPI_REQUEST_NULL ||
current->m_handler)) {
if (optional<status> result = current->test())
return std::make_pair(*result, current);
}
I suspect the 3 line test should be removed and every thng handled in request::test (which is supposed to tell wheter we have a complete request).
But I have no idea why it was done like that in the first place.
(cherry picked from commit ed4852863a)