From 3b9fefcb221cc576b600e09ab43aadafa97a1eed Mon Sep 17 00:00:00 2001
From: Peter Munch <peterrmuench@gmail.com>
Date: Tue, 7 Jul 2020 23:14:52 +0200
Subject: [PATCH] Be explicit regarding mapping in step-12

---
 examples/step-12/step-12.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/step-12/step-12.cc b/examples/step-12/step-12.cc
index 9480db17f4..fcec1e2c1f 100644
--- a/examples/step-12/step-12.cc
+++ b/examples/step-12/step-12.cc
@@ -555,7 +555,8 @@ namespace Step12
 
     {
       Vector<float> values(triangulation.n_active_cells());
-      VectorTools::integrate_difference(dof_handler,
+      VectorTools::integrate_difference(mapping,
+                                        dof_handler,
                                         solution,
                                         Functions::ZeroFunction<dim>(),
                                         values,
-- 
2.39.5