From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-446823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 24243 invoked by alias); 19 Mar 2014 07:34:16 -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 24228 invoked by uid 48); 19 Mar 2014 07:34:13 -0000
From: "charlie at charliedyson dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60579] New: Segmentation fault on variadic 'using' within variadic template class
Date: Wed, 19 Mar 2014 07:34:00 -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: 4.8.1
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: charlie at charliedyson dot net
X-Bugzilla-Status: UNCONFIRMED
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
Message-ID: <bug-60579-4@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/msg01692.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60579

            Bug ID: 60579
           Summary: Segmentation fault on variadic 'using' within variadic
                    template class
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: charlie at charliedyson dot net

The following causes a segfault on gcc 4.8.1 and earlier versions:

template <typename... Args>
struct X
{
  template <typename Head, typename... Tail>
  using First = Head;

  using Y = First<Args...>;
};

Steps to reproduce: http://goo.gl/bBYNJU (GCC Explorer)