From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-374254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 16806 invoked by alias); 17 Nov 2011 12:21:20 -0000
Received: (qmail 16744 invoked by uid 22791); 17 Nov 2011 12:21:16 -0000
X-SWARE-Spam-Status: No, hits=-2.9 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 17 Nov 2011 12:21:04 +0000
From: "gintensubaru at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/51191] New: [C++0x] SEGV on deducing template aliases with non-template alias declarations
Date: Thu, 17 Nov 2011 12:43:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: gintensubaru at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-51191-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
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
X-SW-Source: 2011-11/txt/msg01750.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51191

             Bug #: 51191
           Summary: [C++0x] SEGV on deducing template aliases with
                    non-template alias declarations
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gintensubaru@gmail.com


Code:

template< class T >
class ClassTemplate {};

template< class T >
struct Metafunction {
  typedef T type;
};

template< class T >
using TemplateAlias = ClassTemplate< typename Metafunction<T>::type >;

using Alias = TemplateAlias<int>;
// no SEGV if changed to "typedef TemplateAlias<int> Alias;"

template< class T >
void f( TemplateAlias<T> );

int main()
{
  Alias x; // no SEGV if changed to "TemplateAlias<int> x;"
  f( x );  // no SEGV if changed to "f<int>(x);"
}


Message:

In function 'int main()':
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


GCC version:
gcc-4.7-20111112