In words, integral types and pointers up to eight bytes in size are stored at their natural alignment. Larger types are stored at eight-byte alignment.
In other words (saying it a third time), let
T be an integral or pointer type. If
sizeof(T) ≤ 8
T is aligned at a
sizeof(T)-byte boundary. If
sizeof(T) ≥ 8
T is aligned at an 8-byte boundary.