From 047030bb0239fdccf075b9737805ee08974874f9 Mon Sep 17 00:00:00 2001
From: dbv <dbv@opencascade.com>
Date: Fri, 25 Dec 2015 14:32:37 +0300
Subject: [PATCH] Crash fix

---
 src/Model/Model_AttributeRefList.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Model/Model_AttributeRefList.cpp b/src/Model/Model_AttributeRefList.cpp
index ee9b20d74..469a4add2 100644
--- a/src/Model/Model_AttributeRefList.cpp
+++ b/src/Model/Model_AttributeRefList.cpp
@@ -100,6 +100,9 @@ list<ObjectPtr> Model_AttributeRefList::list()
 
 bool Model_AttributeRefList::isInList(const ObjectPtr& theObj)
 {
+  if(!theObj.get()) {
+    return false;
+  }
   std::list<ObjectPtr> aResult;
   std::shared_ptr<Model_Document> aDoc = std::dynamic_pointer_cast<Model_Document>(
       owner()->document());
-- 
2.39.2