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Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour.

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NNTP-Posting-Date Wed, 18 Jan 2012 00:37:19 -0600
From Gareth Owen <gwowen@gmail.com>
Newsgroups comp.lang.c++
Subject Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour.
References <c72dnSYot-_4l4_SnZ2dnUVZ8o-dnZ2d@giganews.com> <tfydnWenHpz4z4nSnZ2dnUVZ8hidnZ2d@giganews.com> <jf1onk$1g4$1@adenine.netfront.net> <Ze6dneM27chs94nSnZ2dnUVZ8sednZ2d@giganews.com> <jf1t1e$538$1@adenine.netfront.net> <iZudnd3HOcZeFInSnZ2dnUVZ8sudnZ2d@giganews.com> <jf22hj$8np$1@adenine.netfront.net> <8YydncgNDvB9DInSnZ2dnUVZ8oGdnZ2d@giganews.com> <jf2b8u$f22$1@adenine.netfront.net> <bqGdnd40oMTSKInSnZ2dnUVZ7tKdnZ2d@giganews.com> <jf2d0e$g8u$1@adenine.netfront.net> <z4OdncoNKKISJInSnZ2dnUVZ8lednZ2d@giganews.com> <jf3pau$1o2p$1@adenine.netfront.net> <v8-dnR1CXMkqHIjSnZ2dnUVZ8l-dnZ2d@giganews.com> <576cf8d7-4881-4508-8862-876f5c430a10@k8g2000yqk.googlegroups.com> <S6udnZal0s2qFojSnZ2dnUVZ8uCdnZ2d@giganews.com> <c80e1e14-f27a-4b7a-946f-c91d8ddf6832@e8g2000yqd.googlegroups.com> <jf4815$26d6$1@adenine.netfront.net> <25e78f15-9c45-4464-a690-0f31d867deef@b23g2000yqn.googlegroups.com> <jf4bfv$k2b$1@dont-email.me>
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"MikeWhy" <boat042-nospam@yahoo.com> writes:

> Arguably, then, the PVF with implementation is not really useful, but
> simply serves as an escape for defining a benign default action during
> construction. 

With the irony being, as Leigh initially pointed out, this is the one
thing you're not allowed to do...

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Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-14 23:06 +0000
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Goran <goran.pusic@gmail.com> - 2012-01-14 22:21 -0800
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-15 02:25 -0600
    Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-15 14:07 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-15 13:13 -0600
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-15 09:29 +0100
    Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-15 14:16 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-15 15:25 +0100
        Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-15 14:30 +0000
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-16 01:57 -0800
    Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-16 11:28 +0100
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 11:29 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-16 03:21 -0800
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 12:04 +0000
    Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 12:52 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 14:14 +0000
        Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 14:26 +0000
          Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 16:14 +0000
            Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 16:37 +0000
              Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 18:02 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 18:22 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 19:15 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 20:34 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 20:41 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 20:49 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 21:08 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 21:11 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 23:18 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 23:39 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-16 23:48 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-16 23:57 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-17 12:24 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 14:11 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-17 06:43 -0800
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 14:52 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-17 07:22 -0800
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-17 16:35 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 16:40 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-17 17:30 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-18 10:38 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-18 11:57 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-18 12:49 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-17 08:59 -0800
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 17:03 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-17 11:34 -0600
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-17 12:14 -0600
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Gareth Owen <gwowen@gmail.com> - 2012-01-18 06:37 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-18 13:08 -0600
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-18 13:14 -0600
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-17 15:50 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 15:59 +0000
                Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-17 16:09 +0000
          Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. jgk@panix.com (Joe keane) - 2012-01-17 16:13 +0000
            Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. scott@slp53.sl.home (Scott Lurndal) - 2012-01-18 18:11 +0000
        Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. gwowen <gwowen@gmail.com> - 2012-01-16 06:34 -0800
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Gil <vnicula@gmail.com> - 2012-01-16 20:55 -0800
  Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-17 17:58 +0000
    Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. scott@slp53.sl.home (Scott Lurndal) - 2012-01-18 18:12 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Leigh Johnston <leigh@i42.co.uk> - 2012-01-18 19:00 +0000
        Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2012-01-18 22:00 +0000
      Re: Rationale for base class pure virtual function call from ctor/dtor being undefined behaviour. Gareth Owen <gwowen@gmail.com> - 2012-01-19 06:22 +0000

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