diff options
Diffstat (limited to 'boost/mpi/nonblocking.hpp')
| -rw-r--r-- | boost/mpi/nonblocking.hpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/boost/mpi/nonblocking.hpp b/boost/mpi/nonblocking.hpp index ba024c7df4..a2d2e34313 100644 --- a/boost/mpi/nonblocking.hpp +++ b/boost/mpi/nonblocking.hpp @@ -59,8 +59,10 @@ wait_any(ForwardIterator first, ForwardIterator last) ForwardIterator current = first; while (true) { // Check if we have found a completed request. If so, return it. - if (optional<status> result = current->test()) - return std::make_pair(*result, current); + if (current->m_requests[0] != MPI_REQUEST_NULL && + current->m_requests[1] != MPI_REQUEST_NULL) + if (optional<status> result = current->test()) + return std::make_pair(*result, current); // Check if this request (and all others before it) are "trivial" // requests, e.g., they can be represented with a single |