Error Trying to take out a qlist from a binary file

[bmn]

QDataStream& operator>>(QDataStream &out, car *&list)
{
    QString w,x,y,z;
    out>>w;
    out>>x;
    out>>y;
    out>>z;
    out>>list->register; //<--- the line who dont run according to the debugger but i dont know why, this is my qlist
    list->plate=w;
    list->brand=x;
    list->mileage=y.toDouble();
    list->cylinder_capacity=z.toDouble();
  return out;
}

QDataStream& operator>>(QDataStream &out, car *&list)
{
    QString w,x,y,z;
    out>>w;
    out>>x;
    out>>y;
    out>>z;
    out>>list->register; //<--- the line who dont run according to the debugger but i dont know why, this is my qlist
    list->plate=w;
    list->brand=x;
    list->mileage=y.toDouble();
    list->cylinder_capacity=z.toDouble();
  return out;
}

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