From 05a930d3a6d195f588db38695c13866cf0c9b854 Mon Sep 17 00:00:00 2001
From: Robert Haschke <rhaschke@techfak.uni-bielefeld.de>
Date: Tue, 28 May 2024 19:53:27 +0200
Subject: [PATCH] Fix #1834: segfault on addMaximizeButton

... for image/camera displays if no window manager is instantiated
---
 src/rviz/default_plugin/image_display.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/rviz/default_plugin/image_display.cpp b/src/rviz/default_plugin/image_display.cpp
index e460a8db1..c0f4257d3 100644
--- a/src/rviz/default_plugin/image_display.cpp
+++ b/src/rviz/default_plugin/image_display.cpp
@@ -131,7 +131,8 @@ void ImageDisplay::onInitialize()
   render_panel_->initialize(img_scene_manager_, context_);
 
   setAssociatedWidget(render_panel_);
-  getAssociatedWidgetPanel()->addMaximizeButton();
+  if (auto* dock = getAssociatedWidgetPanel())
+    dock->addMaximizeButton();
 
   render_panel_->setAutoRender(false);
   render_panel_->setOverlaysEnabled(false);