From: David Wells <drwells@email.unc.edu>
Date: Sat, 2 Feb 2019 15:00:38 +0000 (-0500)
Subject: Avoid calling a deprecated MPI function.
X-Git-Tag: v9.1.0-rc1~376^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F7677%2Fhead;p=dealii.git

Avoid calling a deprecated MPI function.

This was deprecated a long time ago (1996) and is not present in the
latest version of openMPI (4.0): see

https://www.open-mpi.org/faq/?category=mpi-removed

Credit goes to Pratik Nayak for finding this issue.
---

diff --git a/source/base/mpi.cc b/source/base/mpi.cc
index bd1f7f9846..b8cd45e7c2 100644
--- a/source/base/mpi.cc
+++ b/source/base/mpi.cc
@@ -448,7 +448,7 @@ namespace Utilities
       MPI_Aint     displacements[] = {0, offsetof(MinMaxAvg, min_index)};
       MPI_Datatype types[]         = {MPI_DOUBLE, MPI_INT};
 
-      ierr = MPI_Type_struct(2, lengths, displacements, types, &type);
+      ierr = MPI_Type_create_struct(2, lengths, displacements, types, &type);
       AssertThrowMPI(ierr);
 
       ierr = MPI_Type_commit(&type);