From: Ian Lance Taylor <iant@google.com>
To: "René Bürgel" <rbuergel@web.de>
Cc: gcc-help@gcc.gnu.org
Subject: Re: [C++0x unique_ptr] sorting a vector of unique_ptr fails
Date: Mon, 15 Dec 2008 19:30:00 -0000 [thread overview]
Message-ID: <m3bpvdfdal.fsf@google.com> (raw)
In-Reply-To: <49440067.3020504@web.de> (=?utf-8?Q?=22Ren=C3=A9_B=C3=BCrgel?= =?utf-8?Q?=22's?= message of "Sat\, 13 Dec 2008 19\:35\:19 +0100")
René Bürgel <rbuergel@web.de> writes:
> Is the following code supposed to work in C++0x-Mode or am i just
> doing something wrong?
>
> #include <memory>
> #include <vector>
> #include <algorithm>
>
> int main()
> {
> std::vector<std::unique_ptr<int> > v;
> std::sort(v.begin(), v.end());
> }
I think it is supposed to work. The standard says that the value
must be Swappable, MoveConstructible, and MoveAssignable. I think
that std::unique_ptr meets those requirements.
I think this is a bug in libstdc++-v3. Looking at the code, I think
this means that __introsort_loop can't assume that it can pass values
to std::__median.
Ian
next prev parent reply other threads:[~2008-12-15 19:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-13 17:35 René Bürgel
2008-12-15 19:30 ` Ian Lance Taylor [this message]
2008-12-15 20:22 ` Christopher Jefferson
2008-12-15 23:46 ` René Bürgel
2008-12-16 6:14 ` Ian Lance Taylor
2008-12-17 0:44 ` René Bürgel
2008-12-17 0:50 ` Diego Novillo
2008-12-17 1:06 ` Diego Novillo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m3bpvdfdal.fsf@google.com \
--to=iant@google.com \
--cc=gcc-help@gcc.gnu.org \
--cc=rbuergel@web.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).