From: Matthias Maier <tamiko@43-1.org>
Date: Sat, 11 May 2019 22:32:00 +0000 (-0500)
Subject: change value to reference
X-Git-Tag: v9.1.0-rc1~48^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab0ce98232960b0ada8880ed7810f079add70220;p=dealii.git

change value to reference
---

diff --git a/examples/step-6/step-6.cc b/examples/step-6/step-6.cc
index 7f7f9ee82c..f7086ecde5 100644
--- a/examples/step-6/step-6.cc
+++ b/examples/step-6/step-6.cc
@@ -284,7 +284,7 @@ void Step6<dim>::assemble_system()
 
   std::vector<types::global_dof_index> local_dof_indices(dofs_per_cell);
 
-  for (const auto cell : dof_handler.active_cell_iterators())
+  for (const auto &cell : dof_handler.active_cell_iterators())
     {
       cell_matrix = 0;
       cell_rhs    = 0;