Announcing an all-new, exciting errata item! https://github.com/mpi-forum/mpi-issues/issues/306 In MPI-3.1, the Fortran INTEGER-array-style status object constant MPI_STATUS_SIZE, MPI_SOURCE, MPI_TAG, and MPI_ERROR are explicitly only defined in Fortran. This does not make sense, because Fortran INTEGER-array-style status objects are also accessible in C. This errata therefore creates C versions of these constants: MPI_F_STATUS_SIZE, MPI_F_SOURCE, MPI_F_TAG, and MPI_F_ERROR. Mercifully, it's a pretty short text change. The v3.x PR and PDF and v4.0 PR and PDF are linked from the above issue. Enjoy. -- Jeff Squyres [email protected]