On 23 Oct 2017, at 21:35, Mateusz Guzik <mjgu...@gmail.com> wrote:
>
> Instead, the same can be reshuffled:
> struct crap2 {
> int i1;
> int i2;
> void *p1;
> void *p2;
> };
>
> With offsets:
>
> 0x1000 i1
> 0x1004 i2
> 0x1008 p1
> 0x1010 p2
>
> This is only 24 bytes. 2 ints can be placed together and since they add
> up to 8 the p1 pointer gets the right alignment without extra padding.
If you are making changes of this nature, please consider sorting in the other
order. When we start seeing 128-bit pointers (which, with CHERI-like systems,
may be sooner than you think) then this ordering will give you lots of padding,
whereas putting the pointers first will not.
David
_______________________________________________
freebsd-current@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
