Using QPointF in QShareData class

[SasaVilic]

I am writing my class that uses QPointF. I want to use implicit sharing:

class GeometryLineItemData : public QSharedData {
    public:
        GeometryLineItemData();
        GeometryLineItemData(const GeometryLineItemData &other);
        ~GeometryLineItemData();
 
        QPointF p1;
        QPointF p2;
    };

class GeometryLineItemData : public QSharedData {
    public:
        GeometryLineItemData();
        GeometryLineItemData(const GeometryLineItemData &other);
        ~GeometryLineItemData();

        QPointF p1;
        QPointF p2;
    };

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My question is: Is it safe to use one class that uses implicit sharing in another implicitly shared class? Should I in copy constructor explicitly initialize points, or leave that like it is QT documentary written (although I think they were talking only about simple types)