Add a missing include file.

git-svn-id: https://svn.dealii.org/trunk@25600 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-43/step-43.cc b/deal.II/examples/step-43/step-43.cc
index 775395f4b44f699d0accacf66888b839a2b4f991..0410e92663fecb8ad330342b261b30a3cddb78c7 100644 (file)
--- a/deal.II/examples/step-43/step-43.cc
+++ b/deal.II/examples/step-43/step-43.cc
@@ -30,6 +30,7 @@
 #include <deal.II/base/utilities.h>
 #include <deal.II/base/function.h>
 #include <deal.II/base/tensor_function.h>
+#include <deal.II/base/std_cxx1x/shared_ptr.h>
 
 #include <deal.II/lac/full_matrix.h>
 #include <deal.II/lac/solver_gmres.h>