add size assert to VectorTools::interpolate

diff --git a/include/deal.II/numerics/vector_tools.templates.h b/include/deal.II/numerics/vector_tools.templates.h
index 016c8345012137a6f563431c8e69941f269816a2..8619b896f3383e83772edee0633e97fac91272dc 100644 (file)
--- a/include/deal.II/numerics/vector_tools.templates.h
+++ b/include/deal.II/numerics/vector_tools.templates.h
@@ -80,6 +80,8 @@ namespace VectorTools
                     const Function<spacedim>       &function,
                     VECTOR                         &vec)
   {
+    Assert (vec.size() == dof.n_dofs(),
+            ExcDimensionMismatch (vec.size(), dof.n_dofs()));
     Assert (dof.get_fe().n_components() == function.n_components,
             ExcDimensionMismatch(dof.get_fe().n_components(),
                                  function.n_components));