From d53cb8146e2c8f5bb39deacd0662b8c99b849f0f Mon Sep 17 00:00:00 2001
From: Eivind Kvedalen <eivind@kvedalen.name>
Date: Sun, 3 Jan 2016 10:05:03 +0100
Subject: [PATCH] Spreadsheet: Issue #2388: The SheetObserver should ignore
 changed properties that don't have a name.

---
 src/Mod/Spreadsheet/App/SheetObserver.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/Mod/Spreadsheet/App/SheetObserver.cpp b/src/Mod/Spreadsheet/App/SheetObserver.cpp
index b67064c55..a9c901dd0 100644
--- a/src/Mod/Spreadsheet/App/SheetObserver.cpp
+++ b/src/Mod/Spreadsheet/App/SheetObserver.cpp
@@ -70,12 +70,13 @@ void SheetObserver::slotDeletedObject(const DocumentObject &Obj)
 
 void SheetObserver::slotChangedObject(const DocumentObject &Obj, const Property &Prop)
 {
-    const char * name = Obj.getPropertyName(&Prop);
-    assert(name != 0);
-
     if (&Prop == &Obj.Label)
         sheet->renamedDocumentObject(&Obj);
     else {
+        const char * name = Obj.getPropertyName(&Prop);
+
+        if (name == 0)
+            return;
 
         if (isUpdating.find(name) != isUpdating.end())
             return;