MSAN_ATOMIC_FUNC_READANDCLEAR
MSAN_ATOMIC_FUNC_READANDCLEAR(32, uint32_t);
MSAN_ATOMIC_FUNC_READANDCLEAR(64, uint64_t);
MSAN_ATOMIC_FUNC_READANDCLEAR(int, u_int);
MSAN_ATOMIC_FUNC_READANDCLEAR(long, u_long);
MSAN_ATOMIC_FUNC_READANDCLEAR(ptr, uintptr_t);