[Steps]
1. Create a Impress doc, and save it. (e.g. save the doc as name "test.odp")
2. "Insert -> Object -> OLE Object", pop up "Insert OLE Object" Dialogbox.
Select "Create from file", choose the file we just saved, which name is
"test.odp", select "Link to file", and left-click OK button.
3. left-click "Save" button in standard toolbars. Then close the doc.
4. Open the "test.odp" doc.

[Result]
Program deadlock, and lost response.

[Expectedness]
While a cycle insert has been detected, give some warning, and prevent.