On 11 Mar 2004, Paul Eggert wrote:
> Remko Troncon <remko.troncon@xxxxxxxxxxxxxxxxx> writes:
>
> > Is there a predefined autoconf macro to retrieve the required alignment of
> > data types ?
>
> No. It's not needed all that much, since you can find the alignment
> of a type in C.
>
> #include <stddef.h>
> #define alignof(type) offsetof (struct { char x; type y; }, y)
Doesn't this obtain the default alignment of the type rather than the
required alignment? The required alignment is the alignment necessary
in order to avoid a segmentation fault. The default alignment has the
additional consideration of efficiency.
Bob
======================================
Bob Friesenhahn
bfriesen@xxxxxxxxxxxxxxxxxxx
http://www.simplesystems.org/users/bfriesen
