From 814300f896d7df613f379d15e9829efb6eb46915 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 7 Jan 2005 14:31:33 +0000
Subject: [PATCH] Fixed crash in osgUtl::Simplifier which was due to an
 dereference of an empty array.

---
 src/osgUtil/Simplifier.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/osgUtil/Simplifier.cpp b/src/osgUtil/Simplifier.cpp
index 09cad92cb..55823d870 100644
--- a/src/osgUtil/Simplifier.cpp
+++ b/src/osgUtil/Simplifier.cpp
@@ -1524,9 +1524,12 @@ void Simplifier::simplify(osg::Geometry& geometry, const IndexList& protectedPoi
     osg::notify(osg::INFO)<<"Number of edges= "<<ec._edgeSet.size()<<std::endl;
     osg::notify(osg::INFO)<<"Number of boundary edges= "<<ec.computeNumBoundaryEdges()<<std::endl;
 
-    osg::notify(osg::INFO)<<std::endl<<"Simplifier, in = "<<numOriginalPrimitives<<"\tout = "<<ec._triangleSet.size()<<"\terror="<<(*ec._edgeSet.begin())->getErrorMetric()<<"\tvs "<<getMaximumError()<<std::endl<<std::endl;
-    osg::notify(osg::INFO)<<           "        !ec._edgeSet.empty()  = "<<!ec._edgeSet.empty()<<std::endl;
-    osg::notify(osg::INFO)<<           "        continueSimplification(,,)  = "<<continueSimplification((*ec._edgeSet.begin())->getErrorMetric() , numOriginalPrimitives, ec._triangleSet.size())<<std::endl;
+    if (!ec._edgeSet.empty())
+    {
+        osg::notify(osg::INFO)<<std::endl<<"Simplifier, in = "<<numOriginalPrimitives<<"\tout = "<<ec._triangleSet.size()<<"\terror="<<(*ec._edgeSet.begin())->getErrorMetric()<<"\tvs "<<getMaximumError()<<std::endl<<std::endl;
+        osg::notify(osg::INFO)<<           "        !ec._edgeSet.empty()  = "<<!ec._edgeSet.empty()<<std::endl;
+        osg::notify(osg::INFO)<<           "        continueSimplification(,,)  = "<<continueSimplification((*ec._edgeSet.begin())->getErrorMetric() , numOriginalPrimitives, ec._triangleSet.size())<<std::endl;
+    }
     
     ec.copyBackToGeometry();
 }