From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-388665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 26019 invoked by alias); 12 Apr 2012 23:17:03 -0000
Received: (qmail 26007 invoked by uid 22791); 12 Apr 2012 23:17:02 -0000
X-SWARE-Spam-Status: No, hits=-4.3 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED
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, 12 Apr 2012 23:16:50 +0000
From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/52964] No warning on negative array size in template instantatiation
Date: Thu, 12 Apr 2012 23:17:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: manu at gcc dot gnu.org
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: CC
Message-ID: <bug-52964-4-zBH6N6E4qN@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-52964-4@http.gcc.gnu.org/bugzilla/>
References: <bug-52964-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
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: 2012-04/txt/msg00947.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D52964

Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu.org

--- Comment #2 from Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez <manu at gcc dot gnu=
.org> 2012-04-12 23:16:35 UTC ---
And with trunk we print:

pr52964.cc: In instantiation of =E2=80=98struct S1<4>=E2=80=99:
pr52964.cc:2:49:   required from =E2=80=98struct S2<int>=E2=80=99
pr52964.cc:3:45:   required from =E2=80=98void foo(T) [with T =3D int]=E2=
=80=99
pr52964.cc:4:21:   required from here
pr52964.cc:1:43: error: size of array is negative
 template <int N> struct S1 { int arr[N - 5]; };
                                           ^

We could easily print the caret for each line. And the locations could be m=
uch
better.

I also like more the order of Clang and the extra info about what each thing
is, but we would have to convince Gabriel and/or Jason.

David, what else do you see that could be improved?