From 76c07425b7bc195896d4d4611ee8f0f615e419d1 Mon Sep 17 00:00:00 2001
From: Miikka Heikkinen <miikka.heikkinen@qt.io>
Date: Mon, 14 Jun 2021 14:14:14 +0300
Subject: [PATCH] QmlDesigner: Fix a rare crash

Lack of model existence check causes crash in some situations where
there are other problems in the document.

Change-Id: I239fc55de50e4795a97c60add3c820c6f2c6f73c
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
---
 .../qmldesigner/designercore/instances/nodeinstanceview.cpp    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp b/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
index 74d2770c88f..e2887782abe 100644
--- a/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
+++ b/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
@@ -1860,6 +1860,9 @@ void NodeInstanceView::updateWatcher(const QString &path)
 
 void NodeInstanceView::updateRotationBlocks()
 {
+    if (!model())
+        return;
+
     QList<ModelNode> qml3DNodes;
     QSet<ModelNode> rotationKeyframeTargets;
     bool groupsResolved = false;