>
> > > I don't find this very readable, and imo there is not a huge gain in
> > > doing this over a cast... I'd just go with a cast + a static
> > > compile-time assert that RedCursorPipeItem has a 'base' RedPipeItem
> > > field at offset 0.
> > >
> >
> > static void cursor_pipe_item_free(RedPipeItem *base)
> > {
> > spice_return_if_fail(base);
> >
> > verify(SPICE_OFFSETOF(RedCursorPipeItem, base) == 0);
> > RedCursorPipeItem *pipe_item = (RedCursorPipeItem *) base;
> > ...
> >
> > (obviously for every cast)
>
> I'd put it next to the structure definition and forget about it
>
> typedef struct RedCursorPipeItem {
> RedPipeItem base;
> CursorItem *cursor_item;
> } RedCursorPipeItem;
>
> verify(SPICE_OFFSETOF(RedCursorPipeItem, base) == 0);
>
> Christophe
>
You didn't understand the problem, this is not enough
as a refactory of this would require a complete code scan
as currently is (was?) needed, you have to check for every
cast.
Frediano
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