Fix array-like methods on V4 sequences

We need to properly convert value type lists on assignment and we need
to add the "length" property to the own properties. Furthermore, the V4
sequence methods were confused about integer type ranges. We teach
them about qsizetype, properly range check everything, and drop the
artificial limitation to INT_MAX.

Pick-to: 6.4
Task-number: QTBUG-82443
Change-Id: Ie5af1130c9e78e412c171e6fa26a28a6a7a5d498
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 8 insertions, 6 deletions

diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 9aacb05043..033de56695 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -5948,17 +5948,19 @@ void tst_qqmlecmascript::sequenceConversionIndexes()
 {
     // ensure that we gracefully fail if unsupported index values are specified.
     // Qt container classes only support non-negative, signed integer index values.
+
+    // Since Qt6, on 64bit the maximum length is beyond what we can encode in a 32bit integer.
+    // Therefore we cannot test the overflow anymore.
+
     QUrl qmlFile = testFileUrl("sequenceConversion.indexes.qml");
     QQmlEngine engine;
     QQmlComponent component(&engine, qmlFile);
     QScopedPointer<QObject> object(component.create());
     QVERIFY2(object, qPrintable(component.errorString()));
-    QString w1 = qmlFile.toString() + QLatin1String(":34: Index out of range during length set");
-    QString w2 = qmlFile.toString() + QLatin1String(":41: Index out of range during indexed set");
-    QString w3 = qmlFile.toString() + QLatin1String(":48: Index out of range during indexed get");
-    QTest::ignoreMessage(QtWarningMsg, qPrintable(w1));
-    QTest::ignoreMessage(QtWarningMsg, qPrintable(w2));
-    QTest::ignoreMessage(QtWarningMsg, qPrintable(w3));
+
+    const QString w = qmlFile.toString() + QLatin1String(":59: Index out of range during length set");
+    QTest::ignoreMessage(QtWarningMsg, qPrintable(w));
+
     QMetaObject::invokeMethod(object.data(), "indexedAccess");
     QVERIFY(object->property("success").toBool());
     QMetaObject::invokeMethod(object.data(), "indexOf");