Hi Ken, Thanks for pointing this out - I think you are correct. At least on the PVAR side, that's how it was intended. I would assume, the same should be true for the events as well - Marc-Andre, do you agree? Thanks, Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: [email protected] On 10.02.21, 22:48, "mpiwg-tools on behalf of Raffenetti, Kenneth J. via mpiwg-tools" <[email protected] on behalf of [email protected]> wrote: Hi all, In the latest mpi-4.0 RC pg 758, ln 16 describing MPI_T_EVENT_GET_INFO: If the argument to enumtype provided by the user is the MPI_T_ENUM_NULL pointer, no enumeration type is returned. This differs from previous get info functions. E.g. MPI_T_PVAR_GET_INFO: ... or the argument enumtype is the null pointer, no enumeration type is returned. IMO, the user providing MPI_T_ENUM_NULL to enumtype doesn't make sense. The user would pass a null pointer, as it is an output argument. Ken _______________________________________________ mpiwg-tools mailing list [email protected] https://lists.mpi-forum.org/mailman/listinfo/mpiwg-tools