From 1fcb1a1d8e77fe40a1e8c2db2ee37a4f0eea12e6 Mon Sep 17 00:00:00 2001
From: aramis_acg <aramis_acg@67173fc5-114c-0410-ac8e-9d2fd5bffc1f>
Date: Fri, 22 Apr 2011 15:54:08 +0000
Subject: [PATCH] # OptimizeGraph: fix crash if there is no data remaining
 after flattening the graph and removing everything that serves no purpose.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@958 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
---
 code/OptimizeGraph.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/code/OptimizeGraph.cpp b/code/OptimizeGraph.cpp
index 0b575fbe0..606516d42 100644
--- a/code/OptimizeGraph.cpp
+++ b/code/OptimizeGraph.cpp
@@ -303,6 +303,11 @@ void OptimizeGraphProcess::Execute( aiScene* pScene)
 
 	ai_assert(nodes.size() == 1);
 
+	if (dummy_root->mNumChildren == 0) {
+		pScene->mRootNode = NULL;
+		throw DeadlyImportError("After optimizing the scene graph, no data remains");
+	}
+
 	if (dummy_root->mNumChildren > 1) {
 		pScene->mRootNode = dummy_root;