Fix ShapeInfo for DG elements in 1d

diff --git a/include/deal.II/matrix_free/shape_info.templates.h b/include/deal.II/matrix_free/shape_info.templates.h
index b49ded7650df68359a563437e01d5f9d654ca7cc..2361beccd501bb916a433b781591d0a083a11891 100644 (file)
--- a/include/deal.II/matrix_free/shape_info.templates.h
+++ b/include/deal.II/matrix_free/shape_info.templates.h
@@ -245,8 +245,11 @@ namespace internal
         }
         case 1:
         {
-          this->face_indices(0,0) = 0;
-          this->face_indices(1,0) = n_dofs_1d-1;
+          if (this->dofs_per_face>0)
+            {
+              this->face_indices(0,0) = 0;
+              this->face_indices(1,0) = n_dofs_1d-1;
+            }
           break;
         }
         default: