ATOMIC_PTR_EXCHANGE  161 ruby_atomic.h  #   define ATOMIC_PTR_EXCHANGE(var, val) ATOMIC_EXCHANGE(var, val)
ATOMIC_PTR_EXCHANGE  177 ruby_atomic.h  #   define ATOMIC_PTR_EXCHANGE(var, val) (void *)ATOMIC_SIZE_EXCHANGE(*(size_t *)&(var), (size_t)(val))
ATOMIC_PTR_EXCHANGE  179 ruby_atomic.h  #   define ATOMIC_PTR_EXCHANGE(var, val) ruby_atomic_ptr_exchange((const void **)&(var), (val))