[libc-commits] [libc] [libc] add snmalloc as an alternative allocator to libc (PR #122284)

[Schrodinger ZHU Yifan via libc-commits]

SchrodingerZhu wrote:

LLVM-libc atexit implementation calls malloc to obtain chunks when public packaging mode is enabled, which looks fishy to me. We should probably change the behavior.

On the other hand, we can also call allocators cleanup hook (_malloc_thread_cleanup) internally since we do have full control of threads and main CRT startup/teardown in hermetic/fullbuild. 

https://github.com/llvm/llvm-project/pull/122284