From: jsa@alexandria (Jon S Anthony)
Subject: Re: circular unit dependency
Date: 1997/05/25
Date: 1997-05-25T00:00:00+00:00 [thread overview]
Message-ID: <JSA.97May24215908@alexandria> (raw)
In-Reply-To: 3386d96f.171920@noticias.ibernet.es
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In article <3386d96f.171920@noticias.ibernet.es> jdlopez@caminos.recol.es writes:
> I am making a program with 2 classes that each one depends on the
> other:
>
> --class1.ads
> with class2;
> package class1 is
> --...
>
> --class2.ads
> withc class1;
> package class2 is
> --...
>
> When I compile class1.ads or class2.ads with the freeware gnat
> ADA 95 (301a) a error appears:
>
> circular unit dependency
>
> I see what is happening but:
Uh-Oh. The recursive types across package boundaries issue again!
Run for it!! :-)
This is an old issue that (rightly, I suppose) keeps coming up now and
again. John Volan has a kind of generally agreed upon idiom for
getting around this issue using generics. Maybe he will post his old
notes on the reasons he got where he did. Or maybe it should be put
out on www.adahome.com?? Or you can read it in the Ada=>IDL mapping
document (where we used it to get around the problem of mapping
recursive IDL specs...)
> 2- �Could it be compiled with any compiler different from gnat?
Not if it is correct.
BTW, whatever happened to Tucker's plan for the fix for this? The
"with P.T" solution? I thought that was going to be an ACE thing or
some such, but haven't heard anything about it since.
/Jon
--
Jon Anthony
Organon Motives, Inc.
Belmont, MA 02178
617.484.3383
jsa@organon.com
next prev parent reply other threads:[~1997-05-25 0:00 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-05-24 0:00 circular unit dependency jdlopez
1997-05-24 0:00 ` Michael F Brenner
1997-05-25 0:00 ` Jon S Anthony [this message]
1997-05-26 0:00 ` John G. Volan
1997-05-26 0:00 ` Fergus Henderson
1997-05-27 0:00 ` Jon S Anthony
1997-06-02 0:00 ` Ada95=>Ada0Y Process? [was: circular unit dependency] John G. Volan
1997-06-04 0:00 ` Ada95 packages, C++ namespaces, & circular dependencies John G. Volan
1997-06-07 0:00 ` Ada95=>Ada0Y Process? [was: circular unit dependency] Robert Dewar
1997-06-07 0:00 ` John G. Volan
1997-06-08 0:00 ` Robert Dewar
1997-06-08 0:00 ` John G. Volan
1997-06-07 0:00 ` John G. Volan
1997-05-28 0:00 ` circular unit dependency John G. Volan
1997-06-01 0:00 ` John G. Volan
1997-05-31 0:00 ` Kevin Cline
1997-05-31 0:00 ` Matthew Heaney
[not found] ` <33932F31.4399@sprintmail.com>
1997-06-02 0:00 ` Matthew Heaney
1997-06-03 0:00 ` W. Wesley Groleau (Wes)
1997-06-03 0:00 ` John G. Volan
1997-06-03 0:00 ` John G. Volan
1997-06-05 0:00 ` Matthew Heaney
1997-06-05 0:00 ` John G. Volan
1997-06-06 0:00 ` Stephen Schmid
1997-05-31 0:00 ` John G. Volan
1997-06-01 0:00 ` Kevin Cline
1997-06-01 0:00 ` John G. Volan
1997-06-02 0:00 ` John G. Volan
-- strict thread matches above, loose matches on Subject: below --
1998-05-26 0:00 Brendan Reville
2003-05-23 9:20 Mirko Aigner
2003-05-23 11:37 ` Jeffrey Creem
2003-05-23 12:12 ` David C. Hoos
2003-05-23 18:08 ` Stephen Leake
2003-05-24 22:12 ` Robert I. Eachus
2003-05-26 8:05 ` Mirko Aigner
2005-01-04 18:31 R
2005-01-04 23:45 ` Randy Brukardt
2005-01-05 8:35 ` Martin Krischik
2005-01-05 8:55 ` Duncan Sands
2005-01-05 0:26 ` Stephen Leake
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