From 58c3980437a2e40f22a11b8d72dcf3f5596c9ad2 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Mon, 6 Jun 2016 16:50:59 -0500
Subject: [PATCH] Reorder operations.

First clear all data before triggering the 'clear' signal in the triangulation,
rather than putting the signal code somewhere in the middle.
---
 source/grid/tria.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/source/grid/tria.cc b/source/grid/tria.cc
index a8de820411..4b76e7b8d5 100644
--- a/source/grid/tria.cc
+++ b/source/grid/tria.cc
@@ -9024,10 +9024,13 @@ Triangulation<dim, spacedim>::~Triangulation ()
 template <int dim, int spacedim>
 void Triangulation<dim, spacedim>::clear ()
 {
+  // clear all content of the triangulation...
   clear_despite_subscriptions();
-  signals.clear();
   periodic_face_pairs_level_0.clear();
   periodic_face_map.clear();
+
+  // ...and then notify listeners to it
+  signals.clear();
 }
 
 
-- 
2.39.5