Extracting a struct like:

struct coordinate {
     int x;
     int y;
};

Using the --source option, generates the following constant for the x and y var handles:

    private static final MemoryLayout x$LAYOUT_ = C_INT;
    public static jdk.incubator.foreign.MemoryLayout x$LAYOUT() { return x$LAYOUT_; }

    private static final VarHandle x$VH_ = x$LAYOUT_.varHandle(int.class);
    public static java.lang.invoke.VarHandle x$VH() { return x$VH_; }

    private static final MemoryLayout y$LAYOUT_ = C_INT;
    public static jdk.incubator.foreign.MemoryLayout y$LAYOUT() { return y$LAYOUT_; }

    private static final VarHandle y$VH_ = y$LAYOUT_.varHandle(int.class);
    public static java.lang.invoke.VarHandle y$VH() { return y$VH_; }

This is incorrect, as the varHandle(...) invocations are missing a PathElement.groupLayout(...) argument for the respective fields, and the receiver layout should also be the layout of the parent, not the fields itself.

This results in the var handle for y not having the correct offset.