From: Mathias Anselmann <mathias.anselmann@posteo.de>
Date: Wed, 11 Nov 2020 09:33:42 +0000 (+0100)
Subject: save a copy of the locally owned DoFs IndexSet and use a reference instead
X-Git-Tag: v9.3.0-rc1~910^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d958b57563aef2541184b7f958d63a4b5b84cd8b;p=dealii.git

save a copy of the locally owned DoFs IndexSet and use a reference instead
---

diff --git a/source/dofs/dof_renumbering.cc b/source/dofs/dof_renumbering.cc
index 03a4f8bd35..9ea1a95e33 100644
--- a/source/dofs/dof_renumbering.cc
+++ b/source/dofs/dof_renumbering.cc
@@ -410,8 +410,8 @@ namespace DoFRenumbering
     //
     // note that if constraints are not requested, then the 'constraints'
     // object will be empty and using it has no effect
-    IndexSet       locally_relevant_dofs;
-    const IndexSet locally_owned_dofs = [&]() {
+    IndexSet        locally_relevant_dofs;
+    const IndexSet &locally_owned_dofs = [&]() -> const IndexSet & {
       if (reorder_level_dofs == false)
         {
           DoFTools::extract_locally_relevant_dofs(dof_handler,