From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19592 invoked by alias); 4 Apr 2003 12:36:00 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 19571 invoked by uid 71); 4 Apr 2003 12:36:00 -0000 Resent-Date: 4 Apr 2003 12:36:00 -0000 Resent-Message-ID: <20030404123600.19570.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, jberlin@cc.hut.fi Received: (qmail 19558 invoked by uid 48); 4 Apr 2003 12:35:58 -0000 Message-Id: <20030404123558.19557.qmail@sources.redhat.com> Date: Fri, 04 Apr 2003 12:36:00 -0000 From: jberlin@cc.hut.fi Reply-To: jberlin@cc.hut.fi To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: c/10308: gcc 3.2.2 crashes with provided code snippet with -O -fgcse or -O2 X-SW-Source: 2003-04/txt/msg00136.txt.bz2 List-Id: >Number: 10308 >Category: c >Synopsis: gcc 3.2.2 crashes with provided code snippet with -O -fgcse or -O2 >Confidential: no >Severity: non-critical >Priority: low >Responsible: unassigned >State: open >Class: ice-on-illegal-code >Submitter-Id: net >Arrival-Date: Fri Apr 04 12:36:00 UTC 2003 >Closed-Date: >Last-Modified: >Originator: Jonas Berlin >Release: gcc-3.2.2 >Organization: >Environment: CFLAGS=-march=athlon-tbird -pipe -mmmx -m3dnow -momit-leaf-frame-pointer i686-pc-linux-gnu >Description: I had a bug in my code, which caused gcc to crash. I tried my best at creating the smallest piece of source that still crashes gcc. I added some comments in the source indicating what I discovered during testing.. I haven't been able to reproduce the bug with valid code. >How-To-Repeat: Compile with gcc -O2 -c gcc-bug.c or gcc -O -fgcse -c gcc-bug.c I provided two separate code chunks that cause gcc to crash. Add -DOTHER_CASE to the compile command to test with the other chunk. >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/octet-stream; name="gcc-bug.c" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="gcc-bug.c" LyoqCiAqIGNvbXBpbGUgd2l0aDoKICogICBnY2MgLU8yIC1jIGdjYy1idWcuYwogKiBvcgogKiAg IGdjYyAtTyAtZmdjc2UgLWMgZ2NjLWJ1Zy5jCiAqCiAqIGFkZCAtRE9USEVSX0NBU0UgdG8gdGVz dCB3aXRoIHRoZSBvdGhlciBjb2RlIGNodW5rLgogKi8KCnN0cnVjdCBsaXN0IHsKICAgICAgaW50 ICplbnRyaWVzOwogICAgICBpbnQgbnVtX2VudHJpZXM7Cn07CgpzdHJ1Y3QgY29udGFpbmVyIHsK ICAgICAgLyogaWYgSSByZW1vdmUgdGhlIGZvbGxvd2luZyBkdW1teSwgZ2NjIGRvZXNuJ3QgY3Jh c2ggKi8KICAgICAgY2hhciBkdW1teTsKICAgICAgc3RydWN0IGxpc3QgbHN0Owp9OwoKc3RhdGlj IGlubGluZSBpbnQgc2V0X2lkeChzdHJ1Y3QgbGlzdCAqIGNvbnN0IHRoaXMsIGludCBpZHgpIHsK ICAgLyogdHdvIGRpZmZlcmVudCBjb2RlIGNodW5rcyB0aGF0IGJvdGggYXJlIHN1ZmZpY2llbnQg dG8gY3Jhc2gKICAgICogZ2NjLiAgKi8KI2lmbmRlZiBPVEhFUl9DQVNFCgogICAvKiB3aXRob3V0 IHRoZSAiaWYiLCBnY2MgZG9lc24ndCBjcmFzaCAqLwogICBpZih0aGlzKQogICAgICByZXR1cm4g dGhpcy0+ZW50cmllc1tpZHhdID0gNDI7CiAgIC8qIGl0IGRvZXNuJ3QgbWF0dGVyIHdoZXRoZXIg SSBoYXZlIGEgcmV0dXJuIGhlcmUgb3Igbm90ICovCgojZWxzZQoKICAgcmV0dXJuIHRoaXMtPm51 bV9lbnRyaWVzID8gdGhpcy0+ZW50cmllc1tpZHhdIDogMDsKCiNlbmRpZgp9Cgp2b2lkIHNvbWVm dW5jKGludCBpZHgpIHsKICAgLyogSWYgSSB1c2UgYSBOVUxMIHBvaW50ZXIgaW5zdGVhZCwgZ2Nj IGRvZXNuJ3QgY3Jhc2gqLwogICBzdHJ1Y3QgY29udGFpbmVyICpjb250ID0gZHVtbXkoKTsKICAg aW50IGk7CiAgIGZvcihpID0gMDsgaSA8IGNvbnQtPmxzdC5udW1fZW50cmllczsgKytpKSB7CiAg ICAgIC8qIFRoZSBmb2xsb3dpbmcgbGluZSBoYXMgYSBidWcuIFRoZSAiJmkiIHBhcmFtZXRlciBz aG91bGQgYmUKICAgICAgICogImkiIGluc3RlYWQgKHNpbmNlIHRoZSBzZXRfaWR4IHRha2VzIGFu ICJpbnQiIGFzIHNlY29uZAogICAgICAgKiBwYXJhbWV0ZXIpLiBJZiBJIGNvcnJlY3QgaXQsIGdj YyBkb2Vzbid0IGNyYXNoICovCiAgICAgIGludCBmb28gPSBzZXRfaWR4KCZjb250LT5sc3QsICZp KTsKCiAgICAgIC8qIGlmIEkgZG9uJ3QgdXNlICJmb28iIHR3aWNlIGhlcmUsIGdjYyBkb2Vzbid0 IGNyYXNoICovCiAgICAgIGR1bW15Mihmb28pOwogICAgICBkdW1teTIoZm9vKTsKICAgfQp9Cg==