Just saw this, but not sure I agree with the correction. What actually happens is implementation dependent, but the handle the user sees is indeed MPI_REQUEST_NULL. Rich -----Original Message----- From: mpiwg-p2p [mailto:[email protected]] On Behalf Of Rolf Rabenseifner Sent: Monday, December 28, 2015 6:12 AM To: MPI WG Point To Point Communications working group <[email protected]> Cc: mpi-comments <[email protected]> Subject: [mpiwg-p2p] Errata to MPI-3.0 and MPI-3.1 about MPI_WAIT Dear pt-2-pt WG and all, In the description of MPI_WAIT, MPI-3.1 page 53 line 24-25 and MPI-3.0 page 53 line 27-28 reads Any other type of request is and the request handle is set to MPI_REQUEST_NULL. but it should read Any other type of request is deallocated and the request handle is set to MPI_REQUEST_NULL. This corrected text was voted into MPI-3.0 through ticket 321. The missing "deallocated" is a "typo" probably during the implementation of this ticket before MPI-3.0 was published. Ticket 321: https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/321 and https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/321/ticket321... page 54, lines 14-18. This is a request for an erratum for MPI-3.1, which also applies to MPI-3.0. Best regards Rolf -- Dr. Rolf Rabenseifner . . . . . . . . . .. email [email protected] High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307) _______________________________________________ mpiwg-p2p mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p