QmlCompiler does not care about shadowing of methods

pragma Strict
import QtQuick
import QtQuick.Window

Window {
    width: 640
    height: 480
    title: qsTr("Hello World")

    component B: Item {
        function contains(point: point) : string {
            console.log("b", point.x, point.y)
            return "b"
        }
    }


    component C: Item {
        function contains(point: point) : string {
            console.log("c", point.x, point.y)
            return "c"
        }
    }

    property Item a: Item {}
    property B b: B {}
    property C c: C {}

    function doThing() { console.log(a.contains(Qt.point(0, 0))) }

    Component.onCompleted: {
        doThing();
        a = b;
        doThing();
        a = c;
        doThing();
        Qt.quit();
    }
}

qml: false
qml: b 0 0
qml: b
qml: c 0 0
qml: c

qml: false
qml: b 0 0
qml: true
qml: c 0 0
qml: true