Fix QJSValue singletons only supporting object types

Now primitives such as integers and strings should also work.

Fixes: QTBUG-85615
Change-Id: I201d1844b7272ca50e32f1e33e9ac357b5e68dfe
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit 64102ae231317eb6f637304918e55153dadef72d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/qml/jsruntime/qv4lookup_p.h b/src/qml/jsruntime/qv4lookup_p.h
index 6232d78a57..950e5da768 100644
--- a/src/qml/jsruntime/qv4lookup_p.h
+++ b/src/qml/jsruntime/qv4lookup_p.h
@@ -138,8 +138,9 @@ struct Q_QML_PRIVATE_EXPORT Lookup {
             int scriptIndex;
         } qmlContextScriptLookup;
         struct {
-            Heap::Object *singleton;
-            quintptr unused;
+            Heap::Base *singletonObject;
+            quintptr unused2;
+            QV4::ReturnedValue singletonValue;
         } qmlContextSingletonLookup;
         struct {
             quintptr unused1;