RE: [boost] low-level sub-allocation/alignment challenge

From: Bill Wade (bill.wade_at_[hidden])
Date: 2000-08-24 08:31:40

> From: David Abrahams [mailto:abrahams_at_[hidden]]

> How about this, for determining the alignment requirements of any POD:
>
> template <class PodT>
> class alignment_of
> {
>     struct align {
>         char misalign;
>         PodT x;
>     };
> public:
>     const std::size_t value = offsetof(align, x);
> };

Very good.  That looks right to me.  You'll certainly get a valid answer,
and only an obnoxious compiler would give you something other than the
smallest valid answer.