From c04d1af702c6287b68c179e442704df339ddbcf2 Mon Sep 17 00:00:00 2001
From: nds <nds@opencascade.com>
Date: Thu, 5 May 2016 08:27:00 +0300
Subject: [PATCH] Issue #1481 Fatal error when activate: correction to avoid
 crash on activating part

---
 src/GeomAPI/GeomAPI_Edge.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/GeomAPI/GeomAPI_Edge.cpp b/src/GeomAPI/GeomAPI_Edge.cpp
index eed617307..63761a031 100644
--- a/src/GeomAPI/GeomAPI_Edge.cpp
+++ b/src/GeomAPI/GeomAPI_Edge.cpp
@@ -138,6 +138,9 @@ bool GeomAPI_Edge::isEqual(const std::shared_ptr<GeomAPI_Shape> theEdge) const
   const TopoDS_Shape& aMyShape = const_cast<GeomAPI_Edge*>(this)->impl<TopoDS_Shape>();
   const TopoDS_Shape& aInShape = theEdge->impl<TopoDS_Shape>();
 
+  if (aMyShape.IsNull() || aInShape.IsNull())
+    return false;
+
   if (aMyShape.ShapeType() != aInShape.ShapeType())
     return false;
 
-- 
2.39.2