[clang] [Clang][Sema] Disallow applying `onwership_returns` to functions that return non-pointers (PR #99564)

[Pavel Skripkin via cfe-commits]

pskrgag wrote:

I think, it would be even better to drop second argument for `ownership_returns`, since it mirrors the behavior of `alloc_size`. And also allow any return type.

But I am not sure if it's possible to make such change directly. Maybe we should start with deprecation for couple of releases and eventually come to scheme where `ownership_*` annotates classes of resources, while `alloc_size` annotates only memory allocations. And users will be able to combine them as they like.

If this sounds sane, I will fill up an issue.



https://github.com/llvm/llvm-project/pull/99564