From f8bcbd53be9769f65360c2d7d69a21e3abda4462 Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Wed, 17 Jan 2018 14:34:35 +0300
Subject: [PATCH] Issue #2404: Fatal error when create arc in tangent mode

Fix crash while preparing presentation of the Tangent constraint
---
 src/SketcherPrs/SketcherPrs_PositionMgr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SketcherPrs/SketcherPrs_PositionMgr.cpp b/src/SketcherPrs/SketcherPrs_PositionMgr.cpp
index 85aa05217..3238fb248 100644
--- a/src/SketcherPrs/SketcherPrs_PositionMgr.cpp
+++ b/src/SketcherPrs/SketcherPrs_PositionMgr.cpp
@@ -332,7 +332,7 @@ std::list<ObjectPtr> getCurves(const GeomPointPtr& thePnt, const SketcherPrs_Sym
         double aEnd = aCurve->endParam();
         GeomCirclePtr  aCircle = GeomCirclePtr(new GeomAPI_Circ(aCurve));
         GeomPointPtr aProjPnt = aCircle->project(thePnt);
-        if (thePnt->distance(aProjPnt) <= Precision::Confusion())
+        if (aProjPnt && thePnt->distance(aProjPnt) <= Precision::Confusion())
           aList.push_back(aResObj);
       }
     }
-- 
2.39.2