[libc-commits] [libc] [libc] Use Block as a byte-backed proxy (PR #201001)

[Daniel Thornburgh via libc-commits]

https://github.com/mysterymath commented:

Some cursory thoughts; more in-depth review pending.

For the change itself, the commit message should definitely mention what UB this is fixing and how it fixes it.

https://github.com/llvm/llvm-project/pull/201001