From 4b781d75b447d246f1da915dd4e636598638236a Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Thu, 11 Jan 2018 16:13:07 +0100
Subject: [PATCH] fix crash when querying information about an object that is
 not part of a document

---
 src/App/DocumentObject.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/App/DocumentObject.cpp b/src/App/DocumentObject.cpp
index aedcc38abe..f92103c0b0 100644
--- a/src/App/DocumentObject.cpp
+++ b/src/App/DocumentObject.cpp
@@ -479,7 +479,8 @@ bool DocumentObject::isTouched() const
 
 void DocumentObject::Save (Base::Writer &writer) const
 {
-    writer.ObjectName = this->getNameInDocument();
+    if (this->getNameInDocument())
+        writer.ObjectName = this->getNameInDocument();
     App::ExtensionContainer::Save(writer);
 }