From: Jonathan Wakely <jwakely.gcc@gmail.com>
To: Paolo Carlini <paolo.carlini@oracle.com>
Cc: "Marc Glisse" <marc.glisse@inria.fr>,
"François Dumont" <frs.dumont@gmail.com>,
"Richard Smith" <richardsmith@google.com>,
"Ollie Wild" <aaw@google.com>,
gcc-patches <gcc-patches@gcc.gnu.org>,
"Diego Novillo" <dnovillo@google.com>,
"Paul Pluzhnikov" <ppluzhnikov@google.com>,
libstdc++ <libstdc++@gcc.gnu.org>
Subject: Re: Value type of map need not be default copyable
Date: Thu, 09 Aug 2012 12:01:00 -0000 [thread overview]
Message-ID: <CAH6eHdTWCoqjmL2CbFv5T0Lu03WKkxB1qYYrKFO2D-q-nyQQHQ@mail.gmail.com> (raw)
In-Reply-To: <50237639.3030103@oracle.com>
On 9 August 2012 09:35, Paolo Carlini wrote:
>
> When it does, and the corresponding PR will be *ready* we'll reconsider the
> issue. After all the *months and months and months* spent by the LWG adding
> and removing members from pair and tweaking everything wrt the containers
> and issues *still* popping up (like that with the defaulted copy constructor
> vs insert constraining), and with the support for scoped allocators still
> missing from our implementation, we are not adding members to std::pair such
> easily. Sorry, but personally I'm not available now to further discuss this
> specific point.
I'm with Paolo on this. No additional (non-standard) constructors in
std::pair please.
If it was possible to do without changing the ABI I'd include <tuple>
in the unordered containers anyway, when add scoped allocator support,
because std::tuple already knows how to avoid the EBO for 'final'
allocators (PR 51365). I'd do the same in the other containers except
that they need to work in C++03 mode without std::tuple.
I think we should consider std::tuple almost as fundamental as
std::pair and shouldn't jump through hoops to avoid using it. It's
already included by <memory> for example, to implement
std::unique_ptr, and I recently made changes to make it easier to use
std::unique_ptr internally, so we shouldn't be afraid of std::tuple
getting used more widely.
next prev parent reply other threads:[~2012-08-09 12:01 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 4:18 Ollie Wild
2012-08-03 9:39 ` Paolo Carlini
2012-08-03 15:19 ` Ollie Wild
2012-08-04 11:23 ` Paolo Carlini
2012-08-04 11:54 ` Paolo Carlini
2012-08-04 13:27 ` Marc Glisse
2012-08-04 15:08 ` Paolo Carlini
2012-08-04 15:16 ` Marc Glisse
2012-08-04 15:19 ` Paolo Carlini
2012-08-04 15:28 ` Marc Glisse
2012-08-04 15:34 ` Paolo Carlini
2012-08-07 21:43 ` Ollie Wild
2012-08-07 22:11 ` Paolo Carlini
[not found] ` <CAGL0aWftQAdQXjOBYSoa6fjjM64Mw9_RuTBZXh4UJqhPqmWD0g@mail.gmail.com>
2012-08-08 7:35 ` Marc Glisse
2012-08-08 13:16 ` François Dumont
2012-08-08 13:39 ` Paolo Carlini
2012-08-08 20:46 ` François Dumont
2012-08-09 7:14 ` Marc Glisse
2012-08-09 8:35 ` Paolo Carlini
2012-08-09 12:01 ` Jonathan Wakely [this message]
2012-08-09 20:22 ` François Dumont
2012-08-09 21:22 ` Marc Glisse
2012-08-09 23:26 ` Paolo Carlini
2012-08-11 13:29 ` François Dumont
2012-08-11 13:47 ` Marc Glisse
2012-08-12 11:43 ` Jonathan Wakely
2012-08-12 12:02 ` Marc Glisse
2012-08-12 20:00 ` François Dumont
2012-08-13 12:10 ` Paolo Carlini
2012-08-13 19:50 ` François Dumont
2012-08-08 13:48 ` Marc Glisse
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