[libc-commits] [libc] [libc] Add an extension macro to get numerical thread id (PR #195202)

[Jeff Bailey via libc-commits]

kaladron wrote:

Both glibc and musl appear to cast the thread pointer to the TCB to unsigned long and use that as the value of pthread_t, which avoids exposing internals, structs, or anything else.  Do we have a need to do anything different?   I think I'm missing what problem this is trying to solve.

https://github.com/llvm/llvm-project/pull/195202