[libc-commits] [libc] [libc] Make 'rand()' thread-safe using atomics instead of TLS (PR #96692)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

> And even then, should we really make this MT-unsafe if the atomics aren't fast?

I can forsee primitive microcontrollers which are single threaded wanting to make use of `rand`, and not caring about MT safety.

https://github.com/llvm/llvm-project/pull/96692