[clang] [Clang] Add wraps attribute (for granular integer overflow handling) (PR #86618)

[Oliver Hunt via cfe-commits]

ojhunt wrote:

I’m a little concerned about not allowing the attribute in C++ - the existence of other options in C++ does not mean they are an option (due to various and sundry restrictions of C++ version upgrades different projects have), but also you trivially end up in cases where header code is correct/safe in C, but undefined when included in C++.

To me that seems like a significant footgun.

https://github.com/llvm/llvm-project/pull/86618