[fpc-pascal] alignment of records

[Luca Olivetti]

El 08/08/15 a les 09:30, Sven Barth ha escrit:
> Am 08.08.2015 00:37 schrieb "Ralf Quint" <freedos.la at gmail.com
> <mailto:freedos.la at gmail.com>>:
>  >
>  > On 8/6/2015 8:25 PM, Xiangrong Fang wrote:
>  >>
>  >> It seems that $packrecord does not work at all.
>  >
>  > I always explicitly use PACKED Record as in
>  >
>  > Type ifmap = PACKED Record
>  >                       mem_start: dword;
>  >                       mem_end: dword;
>  >                       base_addr: word;
>  >                       irq: byte;
>  >                       dma: byte;
>  >                       port: byte;
>  >              end;
>  >
>  > and at least in/up to FPC 2.6.4, this works for me just fine
>
> This depends however on the code you're interfacing with. Also the
> record you mentioned as an example shouldn't differ with and without
> packed anyway...

With packed the above record  is 13 bytes, without is 16 (the bytes are 
word aligned).
That's with fpc 2.6.4 x86_64 (though it should be the same with a 32 
bits compiler).
Just to be sure, in such cases I also use "packed array" and most of the 
times bitpacked records.

Bye
-- 
Luca