From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18076 invoked by alias); 3 Jul 2014 15:51:19 -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 17679 invoked by uid 48); 3 Jul 2014 15:51:09 -0000 From: "manu at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/61689] Assignment and Operator not working as intended. Date: Thu, 03 Jul 2014 15:51:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 4.7.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: manu at gcc dot gnu.org X-Bugzilla-Status: RESOLVED 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: cc Message-ID: In-Reply-To: References: 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: 2014-07/txt/msg00176.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D61689 Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |manu at gcc dot gnu.org --- Comment #3 from Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez --- (In reply to wmichaelv from comment #2) > (In reply to Marek Polacek from comment #1) > > The program has undefined behaviour; an assignment is not a sequence po= int.=20 > > See what -Wsequence-point says. >=20 > According to the order operation, grouping should be calculated first bef= ore > add, subtract, division, and multiplication, and assignment. And the > associativity of assignment is from right to left. Where in the standard does it say so? http://stackoverflow.com/questions/22817517/do-parentheses-force-order-of-e= valuation-and-make-an-undefined-expression-define Clang also believes this code is broken (it looks broken to me): test.c:13:37: warning: unsequenced modification and access to 'iA' [-Wunsequenced] iR =3D -iX * iR + iZ / iY * iA / (iA =3D iR =3D iC / iB); ~~ ^ test.c:13:42: warning: unsequenced modification and access to 'iR' [-Wunsequenced] iR =3D -iX * iR + iZ / iY * iA / (iA =3D iR =3D iC / iB); ~~ ^ 2 warnings generated. >>From gcc-bugs-return-455586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 03 15:54:10 2014 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 23705 invoked by alias); 3 Jul 2014 15:54:09 -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 23516 invoked by uid 48); 3 Jul 2014 15:54:01 -0000 From: "ktietz at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/61628] [MinGW)Write of medium sized or larger matrix fails without error message. Date: Thu, 03 Jul 2014 15:54:00 -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: 4.8.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: ktietz 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: cc Message-ID: In-Reply-To: References: 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: 2014-07/txt/msg00177.txt.bz2 Content-length: 714 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D61628 Kai Tietz changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ktietz at gcc dot gnu.org --- Comment #19 from Kai Tietz --- I tested sample in comment #14 with mingw-w64 on 32-bit and 64-bit. My results are for 64-bit: On compile already the error-message: 'Schwerwiegender Fehler: Feldelementg= r=C3=B6=C3=9Fe bei (1) zu gro=C3=9F' Interestingly on 32-bit compile works and on execution the word 'begin' is written. Afterwards process terminates normal in gdb. >>From gcc-bugs-return-455587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 03 16:19:00 2014 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 20740 invoked by alias); 3 Jul 2014 16:18:59 -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 20643 invoked by uid 48); 3 Jul 2014 16:18:51 -0000 From: "wmichaelv at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/61689] Assignment and Operator not working as intended. Date: Thu, 03 Jul 2014 16:18:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 4.7.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: wmichaelv at hotmail dot com X-Bugzilla-Status: RESOLVED 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: 2014-07/txt/msg00178.txt.bz2 Content-length: 172 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61689 --- Comment #4 from wmichaelv at hotmail dot com --- Ah, thank you. That clears it up. And my apology for my ignorant.