steiltre
commented
1 year ago @rogerpearce I changed this fix to the version we talked about yesterday in which handle_next_receive() doesn't access or pop from m_recv_queue. Please review this new version to make sure I didn't miss something we discussed.
This hotfix addresses a bug experienced by @KIwabuchi in which recursive messages can enter a code path that attempts to receive the same MPI_Irecv multiple times.