[libcxx-commits] [libcxx] [libcxx] Implementation of P1831R1 (PR #101439)

[Josh Karns via libcxx-commits]

jkarns275 wrote:

> > * Remove volatile variants of `tuple_size`, `tuple_element`, `variant_size`, and `variant_alternative`.
> > * Require that the volatile overload of many methods of `atomic<T>` require that `atomic<T>::is_always_lock_free` is true.
> 
> You misread the paper. The paper didn't remove anything. It just conditionally deprecated some components.

You are right... I've reverted and simply deprecated the functions instead. Figuring out how to test for deprecation warnings now :)

https://github.com/llvm/llvm-project/pull/101439