From: guerby@gnat.com (Laurent Guerby)
Subject: Re: access aliased obstacle
Date: 1996/07/06
Date: 1996-07-06T00:00:00+00:00 [thread overview]
Message-ID: <ws9d928rekk.fsf@schonberg.cs.nyu.edu> (raw)
In-Reply-To: 4rfig3$l5d@news1.delphi.com
> To pass a data structure to an OS routine I tried
>
> type elements(discriminant: enumeration_type:=normal_value) is record
> case discriminant is
> ...
> end record;
> for elements'size use 64; -- size does not vary
>
> type list_of_elements is array(1 .. 17) of aliased elements;
[...]
Are you trying to interface a C union (array of)? If it's the case,
I think the use of Unchecked_Union may be of interest (and I believe
it will be portable between Ada 95 implementation).
An array of general access may also be closer to C here.
--
Laurent Guerby <guerby@gnat.com>, Team Ada.
"Use the Source, Luke. The Source will be with you, always (GPL)."
next prev parent reply other threads:[~1996-07-06 0:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
1996-07-04 0:00 access aliased obstacle tmoran
1996-07-04 0:00 ` Robert Dewar
1996-07-06 0:00 ` Laurent Guerby [this message]
1996-07-07 0:00 ` Robert A Duff
-- strict thread matches above, loose matches on Subject: below --
1996-07-09 0:00 tmoran
1996-07-09 0:00 ` Robert Dewar
1996-07-09 0:00 ` Laurent Guerby
1996-07-09 0:00 ` Robert Dewar
1996-07-10 0:00 ` Robert A Duff
1996-07-09 0:00 ` Laurent Guerby
1996-07-09 0:00 ` Robert Dewar
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