From 4c58d1a7a87e09e9bba47e232113afcbad8f2b81 Mon Sep 17 00:00:00 2001
From: Mike Krus <mike.krus@kdab.com>
Date: Mon, 30 Mar 2020 17:52:19 +0100
Subject: Don't look up backend node if frontend not updated yet

If node parent / child or entity / component changes before the backend
nodes where created, records might not be complete yet.

Task-number: QTBUG-82269
Change-Id: Id8238410331626130bb71bb1653ac5cb5d5270d4
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
---
 src/core/aspects/qabstractaspect.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/core/aspects/qabstractaspect.cpp b/src/core/aspects/qabstractaspect.cpp
index 6e0d3bd02..f7248f180 100644
--- a/src/core/aspects/qabstractaspect.cpp
+++ b/src/core/aspects/qabstractaspect.cpp
@@ -247,6 +247,8 @@ void QAbstractAspectPrivate::syncDirtyFrontEndSubNodes(const QVector<NodeRelatio
     for (const auto &nodeChange: qAsConst(nodes)) {
         auto getBackend = [this](QNode *node) -> std::tuple<QBackendNode *, bool> {
             const QMetaObject *metaObj = QNodePrivate::get(node)->m_typeInfo;
+            if (!metaObj)
+                return {};
             const BackendNodeMapperAndInfo backendNodeMapperInfo = mapperForNode(metaObj);
             const QBackendNodeMapperPtr backendNodeMapper = backendNodeMapperInfo.first;
 
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