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: 103376,6b1a1ed8b075945
X-Google-Attributes: gid103376,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!news1.google.com!news.glorb.com!news-in.ntli.net!newsrout1-win.ntli.net!ntli.net!news.highwinds-media.com!xara.net!gxn.net!194.159.246.34.MISMATCH!peer-uk.news.demon.net!kibo.news.demon.net!news.demon.co.uk!demon!not-for-mail
From: Simon Wright <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: Allocators and exceptions
Date: Wed, 12 Sep 2007 21:53:24 +0100
Organization: Pushface
Message-ID: <m2ir6fobaz.fsf@mac.com>
References: <1189323618.588340.87180@o80g2000hse.googlegroups.com>
 <jvREi.80243$ax1.52638@bgtnsc05-news.ops.worldnet.att.net>
 <1189369871.672082.162750@50g2000hsm.googlegroups.com>
 <kv25hx961chk.5kg3us0ye06y.dlg@40tude.net>
 <1189460936.295604.143720@r29g2000hsg.googlegroups.com>
 <ixr8l1ty6phe$.stdgh66rlsrl$.dlg@40tude.net>
 <1189502377.626510.172690@22g2000hsm.googlegroups.com>
 <utzq0kqy3.fsf@stephe-leake.org>
 <1189601170.835400.72630@w3g2000hsg.googlegroups.com>
NNTP-Posting-Host: pogner.demon.co.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: news.demon.co.uk 1189630405 5306 62.49.19.209 (12 Sep 2007 20:53:25
 GMT)
X-Complaints-To: abuse@demon.net
NNTP-Posting-Date: Wed, 12 Sep 2007 20:53:25 +0000 (UTC)
Cancel-Lock: sha1:6Vs77BgiZgZqtn+KdENOSBv/xPE=
User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (darwin)
Xref: g2news2.google.com comp.lang.ada:1917
Date: 2007-09-12T21:53:24+01:00
List-Id: <comp.lang.ada>

Maciej Sobczak <see.my.homepage@gmail.com> writes:

> What should the constructor do *after* handling the exception?
> Leave the object half-baked?

I'm not sure exactly what Stephe meant by 'propagate'. It certainly
seems a bad idea to allow a Constraint_Error to propagate
unhandled. But what would be wrong with dealing with the problem and
then raising an appropriate exception from the constructor? (even
Constraint_Error if gnat makes sense).

--S