From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-patches-return-304506-listarch-gcc-patches=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 16617 invoked by alias); 14 Oct 2011 15:49:08 -0000
Received: (qmail 16596 invoked by uid 22791); 14 Oct 2011 15:49:06 -0000
X-SWARE-Spam-Status: No, hits=-6.7 required=5.0	tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,SPF_HELO_PASS
X-Spam-Check-By: sourceware.org
Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 14 Oct 2011 15:48:51 +0000
Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11])	by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p9EFmp6r004260	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK);	Fri, 14 Oct 2011 11:48:51 -0400
Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199])	by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p9EFmo2k005219;	Fri, 14 Oct 2011 11:48:50 -0400
Received: from [0.0.0.0] (ovpn-113-114.phx2.redhat.com [10.3.113.114])	by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id p9EFmmiC007056;	Fri, 14 Oct 2011 11:48:49 -0400
Message-ID: <4E9859E0.9000909@redhat.com>
Date: Fri, 14 Oct 2011 16:23:00 -0000
From: Jason Merrill <jason@redhat.com>
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20111001 Thunderbird/7.0.1
MIME-Version: 1.0
To: Michael Spertus <mike_spertus@symantec.com>
CC: Benjamin Kosnik <bkoz@redhat.com>, Jonathan Wakely <jwakely.gcc@gmail.com>,        "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,        "libstdc++@gcc.gnu.org" <libstdc++@gcc.gnu.org>
Subject: Re: Intrinsics for N2965: Type traits and base classes
References: <20110913154324.4be22faf@shotwell> <4E809F45.2010908@symantec.com>	<20110927195930.54e0d0df@shotwell> <C83DA40E-0C0C-4F0F-96DE-D8B94038A29E@symantec.com> <CAH6eHdQCzY+fGErud70qZn8NM6_gn7=CuCmLge+3ACj471YHCQ@mail.gmail.com> <4E830B10.8020802@symantec.com>	<4E831DF8.9080700@symantec.com> <20110929102215.33af0ba9@shotwell> <B3B7EEED51159748B7479527D3A7663C2FC50944E5@TUS1XCHEVSPIN34.SYMC.SYMANTEC.COM> <20111003214035.2cbbcaf8@shotwell> <20111003220353.7d511557@shotwell> <B3B7EEED51159748B7479527D3A7663C2FC53F97B4@TUS1XCHEVSPIN34.SYMC.SYMANTEC.COM> <4E91F45E.3000706@redhat.com> <B3B7EEED51159748B7479527D3A7663C2FC573A684@TUS1XCHEVSPIN34.SYMC.SYMANTEC.COM>
In-Reply-To: <B3B7EEED51159748B7479527D3A7663C2FC573A684@TUS1XCHEVSPIN34.SYMC.SYMANTEC.COM>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-patches.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-patches/>
List-Post: <mailto:gcc-patches@gcc.gnu.org>
List-Help: <mailto:gcc-patches-help@gcc.gnu.org>
Sender: gcc-patches-owner@gcc.gnu.org
X-SW-Source: 2011-10/txt/msg01304.txt.bz2

On 10/13/2011 01:35 PM, Michael Spertus wrote:
> +int main() {
> +  assert(typeid(b<F>::type)
> +         == typeid(types<A,C,D,A,C,D,B,C,C,D,B,E>));
> +  assert(typeid(db<F>::type) == typeid(types<A,B,E>));
> +  assert(typeid(db<int>::type) == typeid(types<>));
> +  return 0;
> +}

Let's make this a compile-time test using something like

template <class,class> struct assert_same_type;
template <class T> struct assert_same_type<T,T> {};

Jason