From 839dbb1bc1ca11488439ffdc3a9956f8cbc74db0 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 29 Jul 2014 15:47:55 +0000
Subject: [PATCH] Added catch for NULL Transform pointers getting into the
 _transformMap.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14388 16af8721-9629-0410-8352-f15c8da7e697
---
 src/osgUtil/Optimizer.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/osgUtil/Optimizer.cpp b/src/osgUtil/Optimizer.cpp
index afb7edcc8..5c11d4573 100644
--- a/src/osgUtil/Optimizer.cpp
+++ b/src/osgUtil/Optimizer.cpp
@@ -1099,6 +1099,12 @@ bool CollectLowestTransformsVisitor::removeTransforms(osg::Node* nodeWeCannotRem
         titr!=_transformMap.end();
         ++titr)
     {
+        if (titr->first==0)
+        {
+            OSG_NOTICE<<"Warning: CollectLowestTransformsVisitor::removeTransforms() error, encountered a NULL Transform pointer"<<std::endl;
+            break;
+        }
+
         if (titr->second._canBeApplied)
         {
             if (titr->first!=nodeWeCannotRemove)