From c6b12d24f3522d4e5f59550223e8aa3a96a870e9 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Mon, 17 Mar 2014 11:31:08 +0400
Subject: [PATCH] Fix bug of the observer: detach an observer when study is
 unloaded from GUI

---
 src/SalomeApp/SalomeApp_Study.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/SalomeApp/SalomeApp_Study.cxx b/src/SalomeApp/SalomeApp_Study.cxx
index 06ab38203..070cfef7d 100644
--- a/src/SalomeApp/SalomeApp_Study.cxx
+++ b/src/SalomeApp/SalomeApp_Study.cxx
@@ -694,7 +694,9 @@ void SalomeApp_Study::closeDocument(bool permanently)
   _PTR(Study) studyPtr = studyDS();
   if ( studyPtr )
   {
-    if(permanently) {
+    if ( myObserver )
+      myStudyDS->detach( myObserver->_this() );
+    if ( permanently ) {
       SalomeApp_Application::studyMgr()->Close( studyPtr );
     }
     SALOMEDSClient_Study* aStudy = 0;
-- 
2.39.2