From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23669 invoked by alias); 28 Jul 2013 10:32:37 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 23614 invoked by uid 48); 28 Jul 2013 10:32:35 -0000 From: "antoine.balestrat at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/58011] New: GCC segfaults at -O1 Date: Sun, 28 Jul 2013 10:32:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: antoine.balestrat 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-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-07/txt/msg01369.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D58011 Bug ID: 58011 Summary: GCC segfaults at -O1 Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: antoine.balestrat at gmail dot com Using GCC 4.9.0 as of 20130728 : $ cat seg.c int a, b; void f(unsigned p) { unsigned *pp =3D &p; if(!a) p =3D 0; for(b =3D 0; b < 1; b++) if(3 * p + 5 * *pp) a =3D 0; } $ xgcc -O1 seg.c seg.c: In function =E2=80=98f=E2=80=99: seg.c:3:6: internal compiler error: Segmentation fault void f(unsigned p) ^ Please submit a full bug report, with preprocessed source if appropriate. See for instructions. >>From gcc-bugs-return-426863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 28 11:05:06 2013 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 31924 invoked by alias); 28 Jul 2013 11:05:06 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 31840 invoked by uid 48); 28 Jul 2013 11:05:03 -0000 From: "tkoenig at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/58009] Elements with same value in vector subscript in variable definition context Date: Sun, 28 Jul 2013 11:05:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: diagnostic X-Bugzilla-Severity: enhancement X-Bugzilla-Who: tkoenig at gcc dot gnu.org X-Bugzilla-Status: NEW 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: Message-ID: In-Reply-To: References: 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: 2013-07/txt/msg01370.txt.bz2 Content-length: 254 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58009 --- Comment #3 from Thomas Koenig --- I also want to catch a([i,j,i]) = ... for which I cannot think of an algorithm which is O(n), so I guess it will have to be O(n**2).