From c823ef454d27e1d24ab3e111f903b95f2d5e863d Mon Sep 17 00:00:00 2001
From: eap <eap@opencascade.com>
Date: Tue, 27 Apr 2010 06:37:28 +0000
Subject: [PATCH] PAL21685: Fatal error after save/open study with Edit group
 as standalone group    * protect SObjectToObject() from exception in case of
 invalid IOR

---
 src/SMESHGUI/SMESHGUI_Utils.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/SMESHGUI/SMESHGUI_Utils.cxx b/src/SMESHGUI/SMESHGUI_Utils.cxx
index 8ccf90b24..6f921cd22 100644
--- a/src/SMESHGUI/SMESHGUI_Utils.cxx
+++ b/src/SMESHGUI/SMESHGUI_Utils.cxx
@@ -190,7 +190,10 @@ namespace SMESH
       if (theSObject->FindAttribute(anAttr, "AttributeIOR")) {
         _PTR(AttributeIOR) anIOR = anAttr;
         CORBA::String_var aVal = anIOR->Value().c_str();
-        return app->orb()->string_to_object(aVal);
+        // string_to_object() DOC: If the input string is not valid ...
+        // a CORBA::SystemException is thrown.
+        if ( aVal && strlen( aVal ) > 0 )
+          return app->orb()->string_to_object(aVal);
       }
     }
     return CORBA::Object::_nil();
-- 
2.39.2