From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 8 Feb 2024 18:25:45 +0000 (-0700)
Subject: Work around an issue with types only forward declared.
X-Git-Tag: relicensing~45^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F16608%2Fhead;p=dealii.git

Work around an issue with types only forward declared.
---

diff --git a/source/lac/trilinos_tpetra_communication_pattern.cc b/source/lac/trilinos_tpetra_communication_pattern.cc
index 9a462334a3..a797c628ab 100644
--- a/source/lac/trilinos_tpetra_communication_pattern.cc
+++ b/source/lac/trilinos_tpetra_communication_pattern.cc
@@ -49,7 +49,7 @@ namespace LinearAlgebra
                                  const IndexSet &ghost_indices,
                                  const MPI_Comm  communicator)
     {
-      comm = Teuchos::rcpFromRef(communicator);
+      comm = Teuchos::rcpFromUndefRef(communicator);
 
       auto vector_space_vector_map =
         locally_owned_indices.make_tpetra_map_rcp(*comm, false);