Re: [PATCH v3] mem-pool: Don't assume uintmax_t is aligned enough for all types

> +/*
> + * The inner union is an approximation for C11's max_align_t, and the
> + * struct + offsetof computes _Alignof. This can all just be replaced
> + * with _Alignof(max_align_t) if/when C11 is part of the baseline.
> + * Note that _Alignof(X) need not be the same as sizeof(X); it's only
> + * required to be a (possibly trivial) factor. They are the same for
> + * most architectures, but m68k for example has only 2-byte alignment
> + * for its 4-byte and 8-byte types, so using sizeof would waste space.
> + *
> + * Add more types to the union if the current set is insufficient.
> + */