From 78213fef7a9d7612c5018489717524a513df789f Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Fri, 18 Oct 2019 10:54:18 -0400
Subject: [PATCH] Use empty function object for copier

---
 examples/step-51/step-51.cc | 2 +-
 examples/step-9/step-9.cc   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/step-51/step-51.cc b/examples/step-51/step-51.cc
index 269ef7ec13..433632338d 100644
--- a/examples/step-51/step-51.cc
+++ b/examples/step-51/step-51.cc
@@ -1035,7 +1035,7 @@ namespace Step51
                unsigned int &                                        data) {
           this->postprocess_one_cell(cell, scratch, data);
         },
-        [](const unsigned int &) {},
+        std::function<void(const unsigned int &)>(),
         scratch,
         0U);
     }
diff --git a/examples/step-9/step-9.cc b/examples/step-9/step-9.cc
index 7a19ff1ecb..836afd2be5 100644
--- a/examples/step-9/step-9.cc
+++ b/examples/step-9/step-9.cc
@@ -955,7 +955,7 @@ namespace Step9
     WorkStream::run(dof_handler.begin_active(),
                     dof_handler.end(),
                     &GradientEstimation::template estimate_cell<dim>,
-                    [](const EstimateCopyData &) {},
+                    std::function<void(const EstimateCopyData &)>(),
                     EstimateScratchData<dim>(dof_handler.get_fe(),
                                              solution,
                                              error_per_cell),
-- 
2.39.5