step-7: Use AffineConstraints instead of ConstraintMatrix

diff --git a/examples/step-7/step-7.cc b/examples/step-7/step-7.cc
index 40143e79252b7506d16f38f543e0293a1b917d44..465b3faf528f57c5d8481dbea2bc513eda424b4e 100644 (file)
--- a/examples/step-7/step-7.cc
+++ b/examples/step-7/step-7.cc
@@ -443,7 +443,7 @@ namespace Step7
 
     SmartPointer<const FiniteElement<dim>> fe;
 
-    ConstraintMatrix hanging_node_constraints;
+    AffineConstraints<double> hanging_node_constraints;
 
     SparsityPattern      sparsity_pattern;
     SparseMatrix<double> system_matrix;