On Sun, Mar 14, 2021, 20:43 Thomas Adam <thomas@xteddy.org> wrote:

> Hello,
>
> I can see I was as clear as mud with my explanation -- apologies for
> that, so let me try again.
>
> In my original example:
>
> struct monitor {
>     struct {
>         int width;
>         int height
>     } virtual;
> };
>
> ... the members width and height aren't required any more, as they're
> actually computable generically, and don't belong in that struct.
> Instead, I have separate functions which can provide those values.
>
> So where I have in code, statements such as:
>
> struct monitor *m = this_monitor();
> int foo = m->virutal.width;
>
> I want to be able to substitute "m->virtual.width" with a function
> call "get_width()" -- which does not involve "struct monitor" at all.
> Indeed, the semantic patch I'm trying to apply now looks like this:
>
> @@
> struct monitor *m;
> @@
>
> - m->virtual.width;
> + get_width();
>
> ... and although spatch doesn't tell me of any errors, when I run it
> over my codebase, no modifications are made.  So clearly I'm still
> doing something wrong.


Remove the semi-colons. ;)