Merge remote-tracking branch 'origin/5.14' into 5.15

 Conflicts:
	src/corelib/kernel/qvariant.h

Change-Id: I8f3873e74b9795ac889e7c7ec5de2619bca92160

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp b/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
index e719871128..45eb61f6e4 100644
--- a/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
+++ b/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
@@ -282,6 +282,8 @@ private slots:
     void fromStdVariant();
     void qt4UuidDataStream();
 
+    void preferDirectConversionOverInterfaces();
+
 private:
     void dataStream_data(QDataStream::Version version);
     void loadQVariantFromDataStream(QDataStream::Version version);
@@ -5140,5 +5142,47 @@ void tst_QVariant::qt4UuidDataStream()
     QCOMPARE(result.value<QUuid>(), source);
 }
 
+void tst_QVariant::preferDirectConversionOverInterfaces()
+{
+    using namespace QtMetaTypePrivate;
+    bool calledCorrectConverter = false;
+    QMetaType::registerConverter<MyType, QSequentialIterableImpl>([](const MyType &) {
+        return QSequentialIterableImpl {};
+    });
+    QMetaType::registerConverter<MyType, QVariantList>([&calledCorrectConverter](const MyType &) {
+        calledCorrectConverter = true;
+        return QVariantList {};
+    });
+    QMetaType::registerConverter<MyType, QAssociativeIterableImpl>([](const MyType &) {
+        return QAssociativeIterableImpl {};
+    });
+    QMetaType::registerConverter<MyType, QVariantHash>([&calledCorrectConverter](const MyType &) {
+        calledCorrectConverter = true;
+        return QVariantHash {};
+    });
+    QMetaType::registerConverter<MyType, QVariantMap>([&calledCorrectConverter](const MyType &) {
+        calledCorrectConverter = true;
+        return QVariantMap {};
+    });
+    auto holder = QVariant::fromValue(MyType {});
+
+    QVERIFY(holder.canConvert<QSequentialIterableImpl>());
+    QVERIFY(holder.canConvert<QVariantList>());
+    QVERIFY(holder.canConvert<QAssociativeIterableImpl>());
+    QVERIFY(holder.canConvert<QVariantHash>());
+    QVERIFY(holder.canConvert<QVariantMap>());
+
+    holder.value<QVariantList>();
+    QVERIFY(calledCorrectConverter);
+    calledCorrectConverter = false;
+
+    holder.value<QVariantHash>();
+    QVERIFY(calledCorrectConverter);
+    calledCorrectConverter = false;
+
+    holder.value<QVariantMap>();
+    QVERIFY(calledCorrectConverter);
+}
+
 QTEST_MAIN(tst_QVariant)
 #include "tst_qvariant.moc"