From c2b3996d2be58d506ca894e56115535769564f89 Mon Sep 17 00:00:00 2001
From: Manuel Massing <m.massing@warped-space.de>
Date: Wed, 5 Feb 2014 10:36:47 +0100
Subject: [PATCH] Make sure vertex error is evaluated before add_vertex_in_edge
 is called.

vertex_in_edge deletes the passed in edge handle (q_edges[m]),
so it must not be accessed after the split.
---
 src/voronoidiagram.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/voronoidiagram.cpp b/src/voronoidiagram.cpp
index c751d59a..2f855d19 100644
--- a/src/voronoidiagram.cpp
+++ b/src/voronoidiagram.cpp
@@ -1517,7 +1517,6 @@ void VoronoiDiagram::add_vertices( Site* new_site ) {
         }
         HEVertex q = g.add_vertex( VoronoiVertex( sl.p, NEW, NORMAL, new_site->apex_point( sl.p ), sl.k3 ) );
         modified_vertices.insert(q);
-        g.add_vertex_in_edge( q, q_edges[m] );
         g[q].max_error = vpos->dist_error( q_edges[m], sl, new_site);
         if (debug) {
             HEVertex src = g.source(q_edges[m]);
@@ -1525,6 +1524,7 @@ void VoronoiDiagram::add_vertices( Site* new_site ) {
             std::cout << " NEW vertex " << g[q].index << " k3= "<< g[q].k3 << " on edge " << g[src].index << " - " << g[trg].index << "\n";
             assert( (g[q].k3==1) || (g[q].k3==-1) );
         }
+        g.add_vertex_in_edge( q, q_edges[m] );
     }
     if (debug) std::cout << "add_vertices() done.\n";
 }