Do not auto-clean components with live inline components

The inline components do not hold a strong reference to their outer type
because that would be a reference cycle.

Fixes: QTBUG-92236
Change-Id: I6d76a114352653210f0ece6c198cf761d3b4eda1
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit d0d4cc528ba9e3c39c15a2292066dac1d457abd5)

1 files changed, 11 insertions, 1 deletions

diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp
index 8a1bbd9459..e4699d0b55 100644
--- a/src/qml/qml/qqmlmetatype.cpp
+++ b/src/qml/qml/qqmlmetatype.cpp
@@ -1260,6 +1260,16 @@ void QQmlMetaType::unregisterType(int typeIndex)
     }
 }
 
+static bool hasActiveInlineComponents(const QQmlTypePrivate *d)
+{
+    for (const QQmlType &ic : qAsConst(d->objectIdToICType)) {
+        const QQmlTypePrivate *icPriv = ic.priv();
+        if (icPriv && icPriv->count() > 1)
+            return true;
+    }
+    return false;
+}
+
 void QQmlMetaType::freeUnusedTypesAndCaches()
 {
     QQmlMetaTypeDataPtr data;
@@ -1274,7 +1284,7 @@ void QQmlMetaType::freeUnusedTypesAndCaches()
         QList<QQmlType>::Iterator it = data->types.begin();
         while (it != data->types.end()) {
             const QQmlTypePrivate *d = (*it).priv();
-            if (d && d->count() == 1) {
+            if (d && d->count() == 1 && !hasActiveInlineComponents(d)) {
                 deletedAtLeastOneType = true;
 
                 removeQQmlTypePrivate(data->idToType, d);