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,
	T_FILL_THIS_FORM_SHORT,WEIRD_PORT autolearn=unavailable
	autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail
From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: raised PROGRAM_ERROR : XXXXXX finalize/adjust raised exception
Date: Sat, 6 May 2017 14:58:15 +0200
Organization: Aioe.org NNTP Server
Message-ID: <oekh96$be8$1@gioia.aioe.org>
References: <21b617ac-563a-4bac-9e39-a179ed94a240@googlegroups.com>
NNTP-Posting-Host: BYuA7L7MRjuLLjcoGHOBxw.user.gioia.aioe.org
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Complaints-To: abuse@aioe.org
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101
 Thunderbird/45.8.0
X-Notice: Filtered by postfilter v. 0.8.2
Xref: news.eternal-september.org comp.lang.ada:46679
Date: 2017-05-06T14:58:15+02:00
List-Id: <comp.lang.ada>

On 2017-05-06 14:18, reinert wrote:

> I got the following rare error message (when running my Ada program under debian - updated):
>
> "raised PROGRAM_ERROR : cells.ads:43 finalize/adjust raised exception"
>
>
> Line 43-50 in "cells.ads" is like this:
>
>   type cell_observation_t is record
>       id                  : cell_names1.target_t;
>       state               : cell_state_t         := live;
>       r, dr               : real_vector2d        := (0.0, 0.0);
>       axis                : degree_t;
>       children1           : cell_names1.cell_names_sets.set;
>       pre_cell, next_cell : target_t             := cnil;
>    end record;
>
> Is there something obvious I should be aware of?

Exceptions inside controlled object's finalization. Presumably you have 
a controlled member in cell_observation_t.

Add this to the main program:

    GNAT.Exception_Traces.Trace_On (GNAT.Exception_Traces.Every_Raise);

to see the original issue.

(Frequently it is an unhandled exception that rolls the stack, which in 
turn destroys a controlled object that raises an exception in its 
Finalize, all thoroughly hidden away with a Program_Error presented 
instead...)

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de