Add assertion for nonempty hp::FECollection

diff --git a/source/hp/dof_handler.cc b/source/hp/dof_handler.cc
index 1e741dd7bdc456ccefa36927029459c120c07c8a..adb43c610dc3dcc1f9ee1fcb5b1e30727c96274f 100644 (file)
--- a/source/hp/dof_handler.cc
+++ b/source/hp/dof_handler.cc
@@ -1281,6 +1281,8 @@ namespace hp
                       "in the constructor before you can distribute DoFs."));
     Assert (tria->n_levels() > 0,
             ExcMessage("The Triangulation you are using is empty!"));
+    Assert (ff.size() > 0,
+            ExcMessage("The hp::FECollection given is empty!"));
 
     if (&fe_collection != &ff)
       fe_collection = hp::FECollection<dim, spacedim>(ff);