llvm-project

b30f9d74 - [libc] Fix return value of __cxa_thread_atexit_impl function. (#122171)

[libc] Fix return value of __cxa_thread_atexit_impl function. (#122171) This has been added in 0071a79532e8d664b734956a431d8c8c942cc25e to support TLS destructors. Return value of __cxa_thread_atexit is supposed to be the same as std::atexit - zero on success, non-zero on failure. Update the code to do just that (also be consistent with llvm-libc's existing atexit / at_quick_exit implementations).