On Mon, 2013-04-29 at 08:32 +0400, Nikita Churaev wrote:
> > It doesn't have anything to do with C standard.
>
> It does. Take for example:
>
> struct A {
> int q;
> int w;
> /* end of common part */
>
> float x;
> };
>
> struct B {
> int q;
> int w;
> /* end of common part */
>
> double x;
> };
>
> What if the C standard allows the compiler to place q and w further
> apart in struct A than in struct B?
Then every kernel or device driver on the planet would break, as would
large amount of application code. But it doesn't allow the compiler that
freedom.
C specifies the behaviour very precisely and carefully exactly so you
can do this. See "structure padding"...
Liam
--
Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
Pictures from old books: http://fromoldbooks.org/
Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
_______________________________________________
xml mailing list, project page http://xmlsoft.org/
xml@gnome.org
https://mail.gnome.org/mailman/listinfo/xml
