On Fri, Nov 21, 2025 at 10:47:45PM +0100, Miguel Ojeda wrote: > On Fri, Nov 21, 2025 at 8:55 PM Bill Wendling <[email protected]> wrote: > > > > +/* > > + * Optional: only supported since clang >= 21 > > + * > > + * clang: https://github.com/llvm/llvm-project/pull/137250 > > + */ > > +#ifdef CONFIG_CC_HAS_COUNTED_BY_FOR_POINTER > > +#define __counted_by_ptr(member) > > __attribute__((__counted_by__(member))) > > +#else > > +#define __counted_by_ptr(member) > > +#endif > > I guess there is a reason for this name, but it sounds to me a bit > like the thing between parenthesis is a pointer, i.e. that perhaps it > is the pointee that one that counts. > > Hmm... what about `__ptr_counted_by`?
Kees promised to drop this attribute once GCC-16 releases by basically doing 's/__counted_by_ptr/__counted_by/' and unifying things again. This split out state will only exist for a very short while until GCC has a release with this feature on.
