added check not to call faces if dim == 1 when clearing user data

diff --git a/source/grid/tria.cc b/source/grid/tria.cc
index 96efb3aa0557d3d98821720084515a45090441bc..0c18c0957d90baddbfd86a3941665f014a988129 100644 (file)
--- a/source/grid/tria.cc
+++ b/source/grid/tria.cc
@@ -10992,7 +10992,8 @@ Triangulation<dim, spacedim>::clear_user_data()
 {
   // let functions in anonymous namespace do their work
   dealii::clear_user_data(levels);
-  dealii::clear_user_data(faces.get());
+  if (dim > 1)
+    dealii::clear_user_data(faces.get());
 }