From: Ken Garlington <garlingtonke@lfwc.lockheed.com>
Cc: stt@inmet.com
Subject: Re: Elaboration order
Date: 1996/03/15
Date: 1996-03-15T00:00:00+00:00 [thread overview]
Message-ID: <314972FC.3F86@lfwc.lockheed.com> (raw)
In-Reply-To: DoBAMB.GGs.0.-s@inmet.camb.inmet.com
Tucker Taft wrote:
>
> You only need a pragma Elaborate[_All](pkg) if you call a subprogram
> from "pkg" as part of the *elaboration* of some other package.
>
> If the calls only appear in subprogram bodies, rather than at
> the package level, you shouldn't have any problem.
OK. Keeping in mind that I need the answer in terms of Ada 83, then this
is what I think I've heard so far:
1. If, in a package specification, I refer to something in another
package specification that is not completely defined in the other spec,
I need a pragma Elaborate. "Something" can include:
- any case where I need the sequence_of_statements in the package
body to run prior to the use of the something, such as a variable
in the spec which is set in the sequence_of_statements. This case,
I think I always understood.
- any subprogram (since, otherwise, I could get a Program_Error); although
I guess it would have to be a function. This case, I didn't understand.
2. On the other hand, if I refer to a subprogram within another subprogram
body, I don't have to use pragma Elaborate. Is there a spec reference for
this? What about referring to a subprogram elsewhere in a package body?
What about the sequence_of_statements case above?
I'm trying to write up an explanation of this issue for our users, since
I don't think we understood the extent to which pragma Elaborate was needed.
Any assistance in this area in the immediate future would be appreciated.
>
> -Tucker Taft stt@inmet.com http://www.inmet.com/~stt/
> Intermetrics, Inc. Cambridge, MA USA
next prev parent reply other threads:[~1996-03-15 0:00 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <314701A1.469D@lfwc.lockheed.com>
1996-03-15 0:00 ` Elaboration order Robert I. Eachus
1996-03-15 0:00 ` Robert Dewar
[not found] ` <1996Mar14.021345.9856@enterprise.rdd.lmsc.lockheed.com>
[not found] ` <314829CD.4FA9@lfwc.lockheed.com>
1996-03-15 0:00 ` Tucker Taft
1996-03-15 0:00 ` Ken Garlington [this message]
1996-03-16 0:00 ` Joe Wierzbowski
1996-03-26 0:00 ` AdaWorks
1996-03-26 0:00 ` Robert Dewar
1996-03-26 0:00 ` Robert A Duff
1996-03-26 0:00 ` Robert Dewar
1996-03-26 0:00 ` IO in Pure packages, debugging Laurent Guerby
1996-03-26 0:00 ` Elaboration order Robert A Duff
1996-03-16 0:00 ` Ted Dennison
1996-03-26 0:00 ` Laurent Guerby
1996-03-26 0:00 ` Robert A Duff
1996-03-18 0:00 ` Ken Garlington
1996-03-18 0:00 ` Ted Dennison
1996-03-19 0:00 ` Michel Gauthier
[not found] ` <Do8JDv.A2v@world.std.com>
[not found] ` <31494143.3825@lfwc.lockheed.com>
1996-03-15 0:00 ` Robert A Duff
1996-03-18 0:00 ` Norman H. Cohen
[not found] ` <EACHUS.96Mar18143219@spectre.mitre.org>
1996-03-18 0:00 ` Robert Dewar
1996-03-19 0:00 ` Ted Dennison
1996-03-18 0:00 ` Robert Dewar
1996-03-20 0:00 ` David Emery
1996-03-15 0:00 ` Mark A Biggar
1996-03-18 0:00 ` Ken Garlington
1996-03-19 0:00 ` Chris McKnight
1996-03-21 0:00 ` Ken Garlington
1996-03-19 0:00 ` Norman H. Cohen
1996-03-20 0:00 ` Cordes MJ
1996-03-19 0:00 ` Robert Dewar
1996-03-21 0:00 ` Ken Garlington
1996-03-21 0:00 ` Cordes MJ
1996-03-20 0:00 ` Robert A Duff
1996-03-20 0:00 ` Cordes MJ
1996-03-20 0:00 ` Robert Dewar
1996-03-21 0:00 ` Ken Garlington
1996-03-20 0:00 ` Robert A Duff
1996-03-22 0:00 ` Cordes MJ
1996-03-23 0:00 ` JP Thornley
1996-03-25 0:00 ` Robert Dewar
1996-03-26 0:00 ` JP Thornley
1996-03-20 0:00 ` Robert I. Eachus
1996-03-22 0:00 ` Robert I. Eachus
1996-03-22 0:00 ` Robert I. Eachus
1996-03-20 0:00 ` DenReimer
1996-03-20 0:00 ` Robert A Duff
1996-03-20 0:00 ` Norman H. Cohen
1996-03-20 0:00 ` Robert Dewar
1996-03-20 0:00 ` Norman H. Cohen
1996-03-20 0:00 ` Tucker Taft
1996-03-18 0:00 Jean-Pierre Rosen
1996-03-21 0:00 ` Ken Garlington
[not found] <DoDMLL.1F9@world.std.com>
1996-03-18 0:00 ` Chris McKnight
-- strict thread matches above, loose matches on Subject: below --
1999-11-15 0:00 Elaboration Order Wolf-Dieter Heker
1999-11-15 0:00 ` Robert Dewar
1999-11-16 0:00 ` Wolf-Dieter Heker
1999-11-16 0:00 ` Robert Dewar
1999-11-16 0:00 ` Robert Dewar
1999-11-20 0:00 ` Simon Wright
1999-11-22 0:00 ` Robert Dewar
1999-11-23 0:00 ` Mats Weber
1999-11-16 0:00 ` David C. Hoos, Sr.
1999-11-15 0:00 ` Jean-Pierre Rosen
1999-11-15 0:00 ` Robert Dewar
1999-11-16 0:00 ` Jean-Pierre Rosen
1999-11-20 0:00 ` Simon Wright
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