From 359f832dfb129c15976d54ebfbc08aa58c73da47 Mon Sep 17 00:00:00 2001
From: tritao <joao@tritao.eu>
Date: Fri, 24 Jan 2025 10:24:28 +0000
Subject: [PATCH] Gui: Check if document exists in
 `View3DInventorViewer::setOverrideMode`.

---
 src/Gui/View3DInventorViewer.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index 7c0d4344f5..2318e3cf53 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -1140,7 +1140,12 @@ void View3DInventorViewer::setOverrideMode(const std::string& mode)
 
     overrideMode = mode;
 
-    auto views = getDocument()->getViewProvidersOfType(Gui::ViewProvider::getClassTypeId());
+    auto document = getDocument();
+    if (!document) {
+        return;
+    }
+
+    auto views = document->getViewProvidersOfType(Gui::ViewProvider::getClassTypeId());
     if (mode == "No Shading") {
         this->shading = false;
         std::string flatLines = "Flat Lines";