From 73e19821544e0c848dd95136aac3c8d3b3987455 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Tr=C3=B6ger?= <stefantroeger@gmx.net>
Date: Tue, 14 Jul 2015 06:28:10 +0200
Subject: [PATCH] fix datum crash when origin is selected

---
 src/Mod/Part/App/Attacher.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/Part/App/Attacher.cpp b/src/Mod/Part/App/Attacher.cpp
index 0fcd218667..bc2833098b 100644
--- a/src/Mod/Part/App/Attacher.cpp
+++ b/src/Mod/Part/App/Attacher.cpp
@@ -351,6 +351,9 @@ void AttachEngine::EnableAllSupportedModes()
 
 eRefType AttachEngine::getShapeType(const TopoDS_Shape& sh)
 {
+    if(sh.IsNull())
+        return rtAnything;
+    
     switch (sh.ShapeType()){
     case TopAbs_SHAPE:
         return rtAnything; //note: there's no rtPart detection here - not enough data!