[libcxx-commits] [libcxx] [libc++] Partially implement P2846R6: `reserve_hint` (PR #206385)

[Hristo Hristov via libcxx-commits]

https://github.com/Zingam commented:

Mostly LGTM but with a few suggestions and a couple of comments that IMO require fixing.

https://github.com/llvm/llvm-project/pull/206385