App: fix crash on LinkBaseExtension::syncElementList()

Related realthunder/FreeCAD_assembly3#744
realthunder · Jul 24, 2021 · 26faef0 · 26faef0
1 parent f63a5ea
commit 26faef0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/App/Link.cpp b/src/App/Link.cpp
@@ -1580,8 +1580,8 @@ void LinkBaseExtension::syncElementList() {
             {
                 element->LinkedObject.setValue(xlink->getValue(), xlink->getSubValues());
             }
-        } else if(element->LinkedObject.getValue()!=link->getValue() ||
-                  element->LinkedObject.getSubValues().size())
+        } else if(link && (element->LinkedObject.getValue()!=link->getValue()
+                            || element->LinkedObject.getSubValues().size()))
         {
             element->setLink(-1,link->getValue());
         }