Component.onDestruction causes crashes

import QtQuick 2.2

QtObject {
    id: root

    property Component component: QtObject {
        // The component must have an inner object to trigger the crash.
        property var innerObject: QtObject {
            // The inner object must have an onDestruction handler to trigger the crash.
            Component.onDestruction: {}
        }
    }

    property Timer timer: Timer {
        interval: 10
        running: true
        repeat: true
        property real count

        onTriggered: {
            console.log("Iteration " + (++count));

            // Note: if these objects are parented to something (such as root), there's no crash.
            component.createObject();

            // Calling gc() explicitly triggers the crash more quickly, but it also crashes
            // if the gc is invoked automatically.
            gc();
        }
    }
}