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Re: Aliasing 'this' in a C++ constructor

From: Nathan Sidwell <nathan at acm dot org>
To: Marc Glisse <marc dot glisse at inria dot fr>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, jason at redhat dot com
Date: Fri, 18 May 2018 10:06:10 -0400
Subject: Re: Aliasing 'this' in a C++ constructor
References: <alpine.DEB.2.02.1805181416001.9066@stedding.saclay.inria.fr> <CAFiYyc2vbZs3CTEJjr0toFo6xLxEA1jjgs3yPOMOCJRjffaUYg@mail.gmail.com> <alpine.DEB.2.21.1805181432100.15914@stedding.saclay.inria.fr> <2391d064-975c-8cea-aa4e-57e64c35b85c@acm.org> <alpine.DEB.2.21.1805181449500.15914@stedding.saclay.inria.fr> <7bb59bdd-7818-e80c-9407-3cca9071bb68@acm.org> <alpine.DEB.2.21.1805181512220.15914@stedding.saclay.inria.fr>

On 05/18/2018 09:21 AM, Marc Glisse wrote:

what about comparisons to this? I thought restrict implied such acomparison was 'never the same'?
ie. if the ctor was:
 selfie (selfie *ptr) : me (ptr==this ? 0 : ptr) {}
It is tempting to think so, but I don't see any language to that effect.


Ok then, thanks for the explanations.

nathan

--
Nathan Sidwell

References:
- Aliasing 'this' in a C++ constructor
  - From: Marc Glisse
- Re: Aliasing 'this' in a C++ constructor
  - From: Richard Biener
- Re: Aliasing 'this' in a C++ constructor
  - From: Marc Glisse
- Re: Aliasing 'this' in a C++ constructor
  - From: Nathan Sidwell
- Re: Aliasing 'this' in a C++ constructor
  - From: Marc Glisse
- Re: Aliasing 'this' in a C++ constructor
  - From: Nathan Sidwell
- Re: Aliasing 'this' in a C++ constructor
  - From: Marc Glisse

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