From: Timo Heister <timo.heister@gmail.com>
Date: Thu, 27 Sep 2012 22:14:23 +0000 (+0000)
Subject: nicer error message when refining an empty Triangulation
X-Git-Tag: v8.0.0~2005
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b864b391a28a8b577cb36621cd47ddafd8cff627;p=dealii.git

nicer error message when refining an empty Triangulation

git-svn-id: https://svn.dealii.org/trunk@26810 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/source/grid/tria.cc b/deal.II/source/grid/tria.cc
index 0e0f18ad22..d52648089f 100644
--- a/deal.II/source/grid/tria.cc
+++ b/deal.II/source/grid/tria.cc
@@ -9845,6 +9845,7 @@ void Triangulation<dim, spacedim>::distort_random (const double factor,
 template <int dim, int spacedim>
 void Triangulation<dim, spacedim>::set_all_refine_flags ()
 {
+  Assert(n_cells()>0, ExcMessage("Error: An empty Triangulation can not be refined."));
   active_cell_iterator cell = begin_active(),
                        endc = end();