From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,f4387ccd1be41cbe,start
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!postnews.google.com!l28g2000vba.googlegroups.com!not-for-mail
From: =?ISO-8859-1?Q?Hibou57_=28Yannick_Duch=EAne=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: GNAT crunch (suspected bug with types derived from unchecked union)
Date: Mon, 13 Jul 2009 03:49:29 -0700 (PDT)
Organization: http://groups.google.com
Message-ID: 
 <8ad56610-f2e7-4a69-98fc-516e84822582@l28g2000vba.googlegroups.com>
NNTP-Posting-Host: 77.198.58.183
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1247482169 29741 127.0.0.1 (13 Jul 2009 10:49:29
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Mon, 13 Jul 2009 10:49:29 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: l28g2000vba.googlegroups.com; posting-host=77.198.58.183;
	posting-account=vrfdLAoAAAAauX_3XwyXEwXCWN3A1l8D
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
	fr),gzip(gfe),gzip(gfe)
Xref: g2news2.google.com comp.lang.ada:7024
Date: 2009-07-13T03:49:29-07:00
List-Id: <comp.lang.ada>

Hello,

Surprisingly, GNAT persist in crashing when compiling a little project
(surprisingly beceause it is known all over the place to be stable).

It ask me to send a report by mail, but request me to send some
temporary files which I cannot find any where (it gives paths, but no
files found for these paths).

As I'm not a GNAT Pro client, do you think it is useful if I send a
report, even with some missing files ?

What are they doing with these files ? (the message aks for source
files as well)

I will keep an archive of the project in its actual state, to test it
on Janus as soon as I will get it (while don't know when).

The crash seems to be caused by the usage of an uncheched record.

1) I have an uncheched record defined in a root package.
2) A child package makes a derived new type from this record.
3) This new type is part of another record which has a full
representation clause.
4) The compiler first complained the size requested by the
representation was too small.
5) So I added an unchecked pragma to the derived type as well.
6) Then when I wanted to compile the project, it crashs (I've tried
many time after clean up, but it insist on)

I've already meet steps 1 to 5 in this project, but after I've added
the pragma to the derived type, it was compiling without a trouble.
There it is not.

I will have to check the ARM about this pragma, beceause as it is
considered a reprensentation clause, I was thinking it was inherited
by derived types. But messages from the compiler seems to tell it is
not (I do not know if the buf start there, so I will check for it
first).