From 8be196f77de94e42456b2fa39511b037181e0a77 Mon Sep 17 00:00:00 2001
From: Kim Kulling <kim.kulling@googlemail.com>
Date: Tue, 31 Oct 2017 14:03:03 +0100
Subject: [PATCH] closes https://github.com/assimp/assimp/issues/1490 : fix
 invalid access to mesh array when the array is empty.

---
 code/BlenderModifier.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/code/BlenderModifier.cpp b/code/BlenderModifier.cpp
index a1ccba5f4..348df1f48 100644
--- a/code/BlenderModifier.cpp
+++ b/code/BlenderModifier.cpp
@@ -310,7 +310,9 @@ void  BlenderModifier_Subdivision :: DoIt(aiNode& out, ConversionData& conv_data
 
     std::unique_ptr<Subdivider> subd(Subdivider::Create(algo));
     ai_assert(subd);
-
+    if ( conv_data.meshes->empty() ) {
+        return;
+    }
     aiMesh** const meshes = &conv_data.meshes[conv_data.meshes->size() - out.mNumMeshes];
     std::unique_ptr<aiMesh*[]> tempmeshes(new aiMesh*[out.mNumMeshes]());