From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id ECA4D3858401; Mon, 20 Dec 2021 07:05:12 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org ECA4D3858401
From: "mikael.p.persson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/91780] Discrepancy between gcc 7.4, through 9.2, compared
 to clang.
Date: Mon, 20 Dec 2021 07:05:12 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 9.2.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mikael.p.persson at gmail dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-91780-4-O3Ol6aLmCu@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-91780-4@http.gcc.gnu.org/bugzilla/>
References: <bug-91780-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Mon, 20 Dec 2021 07:05:13 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D91780

--- Comment #13 from Mikael Persson <mikael.p.persson at gmail dot com> ---
Ah right lifetime

On Sun, 19 Dec 2021, 16:02 Mikael Persson, <mikael.p.persson@gmail.com>
wrote:

> Looking at it now, not sure why i didnt.
>
> On Sun, 19 Dec 2021, 14:00 redi at gcc dot gnu.org, <
> gcc-bugzilla@gcc.gnu.org> wrote:
>
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D91780
>>
>> --- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
>> Can't you just change your constructor to this?
>>
>>     zip(Containers&&... containers) :
>> containers_(std::forward<Containers>(containers)...) { }
>>
>>
>> The problematic deduction seems to only happen because of the odd
>> constructor
>> with an unused parameter pack that gets deduced as empty.
>>
>> --
>> You are receiving this mail because:
>> You reported the bug.
>
>=