Re: [cocci] Can we match a known macro by macro name instead of expanded function name?

On Sat, 29 Nov 2025, Markus Elfring wrote:

> > .cocci
> >
> > @r@
> > symbol SYSCALL_DEFINE1;
> > identifier fn;
> > type t;
>
> Is this metavariable unused in the SmPL code?

Yes.  The declaration is not needed.

>
>
> > .c
> >
> > SYSCALL_DEFINE1(foo,int,x) { return 0; }
>
> How can a macro call be matched here?

We have already discussed extensively that it can't.  Because the code
doesn't parse without doing the expansion.

julia

>
> > Using * was a bad idea.  You can't transform macro expanded code.
>
> Would any more background information become relevant here?
>
> Regards,
> Markus
>