Use n_isotropic_children() in an assertion.

diff --git a/include/deal.II/grid/reference_cell.h b/include/deal.II/grid/reference_cell.h
index 28f8229f8596a5f1ebb566fc1143004283a1a85b..a29c85a9c28faf144fe555423236f65a222d8b31 100644 (file)
--- a/include/deal.II/grid/reference_cell.h
+++ b/include/deal.II/grid/reference_cell.h
@@ -1147,6 +1147,7 @@ ReferenceCell::child_cell_on_face(
   const unsigned char face_orientation_raw) const
 {
   AssertIndexRange(face, n_faces());
+  AssertIndexRange(subface, face_reference_cell(face).n_isotropic_children());
 
   if (*this == ReferenceCells::Vertex)
     {