From b6b862cad7b03b7b200f6cb8688d57cfcf0f648d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20Br=C3=BCbach?= <Bruebach.Lukas@bdosecurity.de>
Date: Sun, 9 Aug 2026 03:33:42 +0200
Subject: [PATCH] Guard tutorial step target widgets with QPointer

---
 .../interface/widgets/general/tutorial/tutorial_controller.h  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cockatrice/src/interface/widgets/general/tutorial/tutorial_controller.h b/cockatrice/src/interface/widgets/general/tutorial/tutorial_controller.h
index 9b9889dd3..f85ac37fd 100644
--- a/cockatrice/src/interface/widgets/general/tutorial/tutorial_controller.h
+++ b/cockatrice/src/interface/widgets/general/tutorial/tutorial_controller.h
@@ -5,6 +5,7 @@
 
 #include <QList>
 #include <QObject>
+#include <QPointer>
 #include <functional>
 
 enum class ValidationTiming
@@ -19,7 +20,8 @@ class TutorialController;
 
 struct TutorialStep
 {
-    QWidget *targetWidget = nullptr;
+    // QPointer so a destroyed widget is detected instead of dereferencing a dangling pointer.
+    QPointer<QWidget> targetWidget;
     QString text;
     std::function<void()> onEnter = nullptr;
     std::function<void()> onExit = nullptr;