From c05e3bd1c650e395a4917d7f65a121222845dc38 Mon Sep 17 00:00:00 2001
From: vsv <vitaly.smetannikov@opencascade.com>
Date: Tue, 25 Aug 2015 15:32:43 +0300
Subject: [PATCH] Issue #790: prevent crash on detach

---
 src/PartSet/PartSet_MenuMgr.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/PartSet/PartSet_MenuMgr.cpp b/src/PartSet/PartSet_MenuMgr.cpp
index 9b5919c20..0d8c0cc9a 100644
--- a/src/PartSet/PartSet_MenuMgr.cpp
+++ b/src/PartSet/PartSet_MenuMgr.cpp
@@ -291,6 +291,8 @@ void PartSet_MenuMgr::onLineDetach(QAction* theAction)
       } else {
         aPnt = PartSet_Tools::getPoint(aConstrFeature,
                                        SketchPlugin_ConstraintCoincidence::ENTITY_B());
+        if (aPnt.get() == NULL)
+          return;
         aP = aPnt->impl<gp_Pnt>();
         if (aOrig->isEqual(aPnt)) {
           aToDelFeatures.append(aConstrFeature);
-- 
2.39.2