Der forum memebers, dear Wesley, please can we add in the agenda after Informal Errata Reading 705 Fortran has only compile-time constants Rolf an additional slot Errata Discussion 657 All C const int (or unnamed enum) as compile-time constants Rolf, Jeff H. Bestr regards Rolf ----- Original Message -----

From: "Rolf Rabenseifner" <[email protected]> To: "Main MPI Forum mailing list" <[email protected]> Cc: "Puri Bangalore" <[email protected]>, "Claudia Blaas-Schenner" <[email protected]> Sent: Saturday, April 29, 2023 7:38:00 AM Subject: Informal meeting announcement for the May 2023 meeting of the MPI Forum

Dear forum members,

I would like to make the following announcements for the next MPI Forum Meeting (May 2-5, 2023):

- informal reading and discussion #705 Errata: Fortran has only compile-time constants Rolf Issue https://github.com/mpi-forum/mpi-issues/issues/705 PR https://github.com/mpi-forum/mpi-standard/pull/819 PDF https://github.com/mpi-forum/mpi-standard/files/11358444/mpi41-report_Issue7...

This errata should be completely discussed in next (May 2-5, 2023) meeting. It is then planned to have an final errata reading plus errata vote at next meeting (July 10-13, 2023).

It is a bug since MPI-2.2 because a problem in C was directly mapped to Fortran. This mapping was wrong. In Fortran, there is no distinction between link-time and compile-time constants.

Best regards Rolf Rabenseifner

-- Dr. Rolf Rabenseifner . . . . . . . . . .. . . [email protected] . High Performance Computing Center (HLRS) . . . ++49(0)711/685-65530 . University of Stuttgart . . . . . . www.hlrs.de/people/rabenseifner . Nobelstr. 19, 70569 Stuttgart, Germany