diff options
| author | Ulf Hermann <ulf.hermann@qt.io> | 2023-02-14 12:24:55 +0100 |
|---|---|---|
| committer | Ulf Hermann <ulf.hermann@qt.io> | 2023-02-17 08:15:29 +0100 |
| commit | 5d5e41ed73450a122aa4eaa09bcc38125deedd4b (patch) | |
| tree | f8cc492a864aeb823eb54287bbfc239881941a6b /src/qml | |
| parent | dc77e09f8696bc8a382fdae234d3c7869e9d3be8 (diff) | |
QQmlMetaType: Clear property caches on qmlClearTypeRegistrations
Otherwise we may retain dangling pointers referencing invalid property
caches. Some metaobjects are created on the heap. If the memory manager
decides to re-use the heap space for new metaobjects, we can retrieve
the invalid property caches.
Task-number: QTBUG-110933
Change-Id: Ic00bb852151bcf58ba6ae798a6bf2cea686a9e10
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit 6937f2e50dd60c58350a464eb83ba9d11c7146f9)
Diffstat (limited to 'src/qml')
| -rw-r--r-- | src/qml/qml/qqmlmetatype.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp index a4ed418548..4b73984636 100644 --- a/src/qml/qml/qqmlmetatype.cpp +++ b/src/qml/qml/qqmlmetatype.cpp @@ -337,6 +337,10 @@ void QQmlMetaType::clearTypeRegistrations() data->urlToNonFileImportType.clear(); data->metaObjectToType.clear(); data->undeletableTypes.clear(); + + for (auto it = data->propertyCaches.begin(), end = data->propertyCaches.end(); it != end; ++it) + (*it)->release(); + data->propertyCaches.clear(); } int QQmlMetaType::registerAutoParentFunction(const QQmlPrivate::RegisterAutoParent &function) |