From fdfffbcc9e1e0b5a0ea44bb5f73e6fe937f780a1 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Tue, 2 Jul 2024 23:26:47 +0200
Subject: [PATCH] TD: Fix DrawViewCollection::unsetupObject()

Assigning a null pointer to a std::string causes a failure
---
 src/Mod/TechDraw/App/DrawViewCollection.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Mod/TechDraw/App/DrawViewCollection.cpp b/src/Mod/TechDraw/App/DrawViewCollection.cpp
index b90498b896..19125afb86 100644
--- a/src/Mod/TechDraw/App/DrawViewCollection.cpp
+++ b/src/Mod/TechDraw/App/DrawViewCollection.cpp
@@ -213,9 +213,11 @@ void DrawViewCollection::unsetupObject()
     std::string docName = getDocument()->getName();
 
     for (auto* view : Views.getValues()) {
-        std::string viewName = view->getNameInDocument();
-        Base::Interpreter().runStringArg("App.getDocument(\"%s\").removeObject(\"%s\")",
-                                          docName.c_str(), viewName.c_str());
+        if (view->isAttachedToDocument()) {
+            std::string viewName = view->getNameInDocument();
+            Base::Interpreter().runStringArg("App.getDocument(\"%s\").removeObject(\"%s\")",
+                                              docName.c_str(), viewName.c_str());
+        }
     }
 
     std::vector<App::DocumentObject*> emptyViews;