From 50dabfbfdf2a995c10dd3bb029b88092e0c73b3e Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Mon, 16 Mar 2020 14:26:51 +0300
Subject: [PATCH] #18861 [CEA] Unstable Netgen 1D-2D-3D algorithm: Fix crash
 caused by improper usage of SObject::GetFather()

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

diff --git a/src/SMESHGUI/SMESHGUI.cxx b/src/SMESHGUI/SMESHGUI.cxx
index ba08d5101..8d2bb1606 100644
--- a/src/SMESHGUI/SMESHGUI.cxx
+++ b/src/SMESHGUI/SMESHGUI.cxx
@@ -1457,7 +1457,7 @@ namespace
       if ( !io->hasEntry() ) continue;
       _PTR(SObject) so = SMESH::getStudy()->FindObjectID( io->getEntry() );
       SMESH::SMESH_Mesh_var mesh;
-      while ( mesh->_is_nil() && so )
+      while ( mesh->_is_nil() && so && so->GetID() != "0:" )
       {
         CORBA::Object_var obj = SMESH::SObjectToObject( so );
         SMESH::SMESH_IDSource_var isrc = SMESH::SMESH_IDSource::_narrow( obj );