From b08c939f43ea0471ebb1546204daf8954d80fc8e Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Tue, 12 Sep 2017 16:28:31 +0200
Subject: [PATCH] when accessing view provider of object make sure the object
 hasn't been removed from the document, raise an exception otherwise

---
 src/App/DocumentObjectPyImp.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/App/DocumentObjectPyImp.cpp b/src/App/DocumentObjectPyImp.cpp
index 2c984643fe..42013879e3 100644
--- a/src/App/DocumentObjectPyImp.cpp
+++ b/src/App/DocumentObjectPyImp.cpp
@@ -189,7 +189,12 @@ Py::Object DocumentObjectPy::getViewObject(void) const
         arg.setItem(0, Py::String(getDocumentObjectPtr()->getDocument()->getName()));
         Py::Object doc = method.apply(arg);
         method = doc.getAttr("getObject");
-        arg.setItem(0, Py::String(getDocumentObjectPtr()->getNameInDocument()));
+        const char* internalName = getDocumentObjectPtr()->getNameInDocument();
+        if (!internalName) {
+            throw Py::RuntimeError("Object has been removed from document");
+        }
+
+        arg.setItem(0, Py::String(internalName));
         Py::Object obj = method.apply(arg);
         return obj;
     }