[libcxx-commits] [libcxx] [libc++] Add compact bounded specialization for capacity_aware_iterator (PR #208271)

[William Tran-Viet via libcxx-commits]

smallp-o-p wrote:

It's likely this is going to become its own iterator type, but the `capacity_aware_iterator` overload is essentially what would get split out.

https://github.com/llvm/llvm-project/pull/208271