This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Value type of map need not be default copyable

From: Marc Glisse <marc dot glisse at inria dot fr>
To: François Dumont <frs dot dumont at gmail dot com>
Cc: Paolo Carlini <paolo dot carlini at oracle dot com>, Richard Smith <richardsmith at google dot com>, Ollie Wild <aaw at google dot com>, gcc-patches <gcc-patches at gcc dot gnu dot org>, Diego Novillo <dnovillo at google dot com>, Paul Pluzhnikov <ppluzhnikov at google dot com>, libstdc++ <libstdc++ at gcc dot gnu dot org>
Date: Sat, 11 Aug 2012 15:47:15 +0200 (CEST)
Subject: Re: Value type of map need not be default copyable
References: <CAFOgFcTNNZSObWgAwSqWghH66ddkHsAMLaskmJFH6rPT=Upb3Q@mail.gmail.com> <501D0635.8050006@oracle.com> <501D0D6A.3090407@oracle.com> <alpine.DEB.2.02.1208041505230.3271@laptop-mg.saclay.inria.fr> <501D3AD7.8060503@oracle.com> <alpine.DEB.2.02.1208041711220.15574@laptop-mg.saclay.inria.fr> <501D3D89.7010505@oracle.com> <alpine.DEB.2.02.1208041722350.15574@laptop-mg.saclay.inria.fr> <501D40ED.8090909@oracle.com> <CAFOgFcR+yDmmWjnjw7txW+3Cgcg+6hEwByPHqrADwHcbEgCdAg@mail.gmail.com> <CAGL0aWftQAdQXjOBYSoa6fjjM64Mw9_RuTBZXh4UJqhPqmWD0g@mail.gmail.com> <alpine.DEB.2.02.1208080930570.3292@laptop-mg.saclay.inria.fr> <5022667F.404@gmail.com> <50226BF4.7070904@oracle.com> <5022D02C.4070108@gmail.com> <alpine.DEB.2.02.1208090849340.3255@laptop-mg.saclay.inria.fr> <50237639.3030103@oracle.com> <50241BF1.3060404@gmail.com> <alpine.DEB.2.02.1208092254510.3224@laptop-mg.saclay.inria.fr> <50244729.2050900@oracle.com> <50265E1D.8020708@gmail.com>

On Sat, 11 Aug 2012, François Dumont wrote:

Your remark on using std::move rather than std::forward Marc made sens but didn't work. I don't understand why but the new test is showing that std::forward works. If anyone can explain why std::move doesn't work I am interested.

What testcase failed? I just tried the 2.cc file you added with the patch, and replacing forward<key_type>(__k) with move(__k) compiled fine.

--
Marc Glisse

Follow-Ups:
- Re: Value type of map need not be default copyable
  - From: Jonathan Wakely
- Re: Value type of map need not be default copyable
  - From: François Dumont

References:
- Value type of map need not be default copyable
  - From: Ollie Wild
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: Ollie Wild
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: FranÃois Dumont
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: FranÃois Dumont
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: FranÃois Dumont
- Re: Value type of map need not be default copyable
  - From: Marc Glisse
- Re: Value type of map need not be default copyable
  - From: Paolo Carlini
- Re: Value type of map need not be default copyable
  - From: François Dumont

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]