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 6F1633861019; Thu,  8 Oct 2020 18:46:34 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6F1633861019
From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/97328] [10/11 Regression] ICE in verify_ctor_sanity, at
 cp/constexpr.c:3995 since r10-7313-gb599bf9d6d1e180d
Date: Thu, 08 Oct 2020 18:46:34 +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: 11.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: ppalka at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: ppalka at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-97328-4-DXPXF9E5hH@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-97328-4@http.gcc.gnu.org/bugzilla/>
References: <bug-97328-4@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: Thu, 08 Oct 2020 18:46:34 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97328

--- Comment #2 from Patrick Palka <ppalka at gcc dot gnu.org> ---
When 'storage' is a struct instead of a union, i.e. for the testcase

template <typename T, int N>
struct vector {
    struct storage {=20
        T t;=20
        constexpr  storage() {}
    } data[N];
};

constexpr auto foo() {
    vector<char, 8> i;
    return i;
}
auto f =3D foo();

we started to ICE earlier, since r279019:

   PR c++/91353 - P1331R2: Allow trivial default init in constexpr contexts=
.=