From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-445447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 14889 invoked by alias); 5 Mar 2014 09:13:04 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 14658 invoked by uid 48); 5 Mar 2014 09:12:59 -0000
From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60417] [DR 1518] Bogus error on C++03 aggregate initialization
Date: Wed, 05 Mar 2014 09:13:00 -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: 4.9.0
X-Bugzilla-Keywords: rejects-valid
X-Bugzilla-Severity: normal
X-Bugzilla-Who: redi at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: jason at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.9.0
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-60417-4-IWwznsPANr@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-60417-4@http.gcc.gnu.org/bugzilla/>
References: <bug-60417-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-03/txt/msg00316.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60417

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think Daniel's question is tangential because the testcase can be modified
like so:

  B b{};

Or like so:

struct A { explicit A(int = 0); };
struct B { int i; A a; };

int main()
{
  B b = { 1 };
}

Now whether B has an explicit default ctor is irrelevant. This bug is about
whether the missing initializer-clause for b.a is equivalent to {} or A{}, and
as I said in PR 60416, [dcl.init.aggr]/7 has an example indicating that the
answer is A{}, so I think the testcase is clearly valid, whatever the
resolution of DR 1518 or Daniel's question.