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 4ABC7385702C; Tue,  7 Jul 2020 00:22:37 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4ABC7385702C
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1594081357;
 bh=QvJDrN94PjCwMHvophhs9WJfvFbSVdUZXVHTVdafqY0=;
 h=From:To:Subject:Date:From;
 b=csVf9AQjkvjSL4jQGTY1C1YGhf41J0EtA2VRZLdKrENgJ342Gj6Dsmz+BUFxuZ21M
 akSqbBwoTd4pdI/tws3y09oPJFtWp1ivQhVKAQCNqQvQFyfp3Nq/nFzqZgjjb1yS5y
 dDf+/LqdvMT1sQhz+PTKNF+1ioKTs/HX9NsUep5s=
From: "johelegp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/96090] New: Inconsistent querying of differring exception
 specifications of explicitly defaulted functions
Date: Tue, 07 Jul 2020 00:22:37 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 10.1.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: johelegp at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
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: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-96090-4@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: <http://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: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Jul 2020 00:22:37 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96090

            Bug ID: 96090
           Summary: Inconsistent querying of differring exception
                    specifications of explicitly defaulted functions
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: johelegp at gmail dot com
  Target Milestone: ---

See https://godbolt.org/z/SiGMyX.
```C++
#include <type_traits>
using namespace std;
struct yesthrow_t
{
    yesthrow_t()                              noexcept(false) =3D default;
    yesthrow_t(const yesthrow_t&)             noexcept(false) =3D default;
    yesthrow_t(      yesthrow_t&&)            noexcept(false) =3D default;
    yesthrow_t& operator=3D(const yesthrow_t&)  noexcept(false) =3D default;
    yesthrow_t& operator=3D(      yesthrow_t&&) noexcept(false) =3D default;
};
static_assert(!is_nothrow_default_constructible_v<yesthrow_t>);
static_assert(!is_nothrow_copy_constructible_v<   yesthrow_t>);
static_assert(!is_nothrow_copy_assignable_v<      yesthrow_t>);
static_assert(!is_nothrow_move_constructible_v<   yesthrow_t>);
static_assert(!is_nothrow_move_assignable_v<      yesthrow_t>);
```
https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00311.html calls out a single
case, but not this inconsistency.=