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 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED.fn3LatRFkm9/xzEj7F2/NQ.user.gioia.aioe.org!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Last chance handler on a PC Date: Thu, 30 Jan 2020 10:25:22 +0100 Organization: Aioe.org NNTP Server Message-ID: References: NNTP-Posting-Host: fn3LatRFkm9/xzEj7F2/NQ.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:68.0) Gecko/20100101 Thunderbird/68.4.2 X-Notice: Filtered by postfilter v. 0.9.2 Content-Language: en-US Xref: reader01.eternal-september.org comp.lang.ada:57987 Date: 2020-01-30T10:25:22+01:00 List-Id: On 2020-01-30 09:55, ahlan@marriott.org wrote: > Does anyone know if it is possible to install a last chance handler for a PC program. > Ie Write a procedure that gets called when a program issues an unhandled exception > If it is possible how do you do it? The answer depends on what you understand under "unhandled exception" and what you want to do in such a state. In practice such things have little use. Side effects of unanticipated [language and then system] exception propagation tend to ruin any relevant information and data so that at the point when the handler is called everything is in a total mess. The best way I know is tracing exceptions. With GNAT you can quite easily hook up exception raising points when some useful information is still there. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de