From 6e9295ce4cee26be461fd79686d9ad4749f6f21b Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Sat, 29 Dec 2012 11:23:25 +0000
Subject: [PATCH] 0022051: [CEA 744] SALOME crashes when calliing
 "BasicProperties" on a sphere degenerated edge

---
 src/GEOMBase/GEOMBase.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/GEOMBase/GEOMBase.cxx b/src/GEOMBase/GEOMBase.cxx
index 1df7a528c..0e13b280e 100644
--- a/src/GEOMBase/GEOMBase.cxx
+++ b/src/GEOMBase/GEOMBase.cxx
@@ -512,7 +512,7 @@ TopoDS_Shape GEOMBase::CreateArrowForLinearEdge( const TopoDS_Shape& shape )
     try {
       Standard_Real first, last;
       Handle(Geom_Curve) curv = BRep_Tool::Curve( TopoDS::Edge( shape ), first, last );
-      if ( curv->IsCN(1) ) {
+      if ( !curv.IsNull() && curv->IsCN(1) ) {
         const Standard_Real param = ( first+last ) / 2.0;
         gp_Pnt middleParamPoint;
         gp_Vec V1;
-- 
2.39.2