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-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,56131a5c3acc678e
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-12-08 20:41:35 PST
Path: 
 archiver1.google.com!news2.google.com!newsfeed2.dallas1.level3.net!news.level3.com!news-out.visi.com!petbe.visi.com!news.state.mn.us!arclight.uoregon.edu!newshub.sdsu.edu!small1.nntp.aus1.giganews.com!nntp.giganews.com!cyclone1.gnilink.net!spamkiller2.gnilink.net!nwrdny01.gnilink.net.POSTED!0e8a908a!not-for-mail
From: Hyman Rosen <hyrosen@mail.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
 rv:1.6b) Gecko/20031205 Thunderbird/0.4
X-Accept-Language: en-us, en
MIME-Version: 1.0
Newsgroups: comp.lang.ada
Subject: Re: Question about OO programming in Ada
References: <bq092s$9ph$1@online.de> <cMGdnQaqSutsF0yiRTvUqQ@rapidnet.com>
 <lZsAb.266$iy6.136@nwrdny03.gnilink.net>
 <5JmdnUF_9o_ABE-iRTvUrg@rapidnet.com>
 <l0BAb.601$kz2.183@nwrdny01.gnilink.net>
 <Xns944A5737BA540jimmaureenrogers@204.127.36.1>
 <1273941.m4G3ZzughP@linux1.krischik.com>
 <Xns944A8863655C1jimmaureenrogers@204.127.36.1>
 <QkSAb.1580$kz2.304@nwrdny01.gnilink.net>
 <kMydnQG-7v3Cn0miRTvUrg@rapidnet.com>
 <UPWAb.2300$kz2.1329@nwrdny01.gnilink.net>
 <bef8tvo3p8cfuonp8vvvh1ramr49di9t14@4ax.com>
 <1998676.6fRVD2dq80@linux1.krischik.com>
In-Reply-To: <1998676.6fRVD2dq80@linux1.krischik.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Message-ID: <1ocBb.4144$UM4.1451@nwrdny01.gnilink.net>
Date: Tue, 09 Dec 2003 04:41:33 GMT
NNTP-Posting-Host: 162.83.232.160
X-Complaints-To: abuse@verizon.net
X-Trace: nwrdny01.gnilink.net 1070944893 162.83.232.160 (Mon,
 08 Dec 2003 23:41:33 EST)
NNTP-Posting-Date: Mon, 08 Dec 2003 23:41:33 EST
Xref: archiver1.google.com comp.lang.ada:3254
Date: 2003-12-09T04:41:33+00:00
List-Id: <comp.lang.ada>

Martin Krischik wrote:
>>[*]  "this" is a class-wide pointer when Baz was not directly or
>>indirectly called from a constructor/destructor. It is a specific
>>pointer otherwise.
> 
> This is why one should avoid calling virtual functions in conctructors or
> destructors.

No, "this" is *always* a class-wide pointer, whether a constructor/destructor
is currently active or not. But the dynamic type of *this changes through the
coyrse of the construction/destruction process, to the type of the class being
constructed or destructed. But virtual dispatch is always occurring.