From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15475 invoked by alias); 22 Oct 2011 05:13:27 -0000 Received: (qmail 15465 invoked by uid 22791); 22 Oct 2011 05:13:25 -0000 X-SWARE-Spam-Status: No, hits=-0.8 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,TW_GJ,TW_NX X-Spam-Check-By: sourceware.org Received: from mail-iy0-f175.google.com (HELO mail-iy0-f175.google.com) (209.85.210.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 22 Oct 2011 05:13:11 +0000 Received: by iafi7 with SMTP id i7so6008258iaf.20 for ; Fri, 21 Oct 2011 22:13:10 -0700 (PDT) Received: by 10.68.30.5 with SMTP id o5mr33136345pbh.9.1319260390762; Fri, 21 Oct 2011 22:13:10 -0700 (PDT) Received: from [192.168.1.4] ([112.94.251.175]) by mx.google.com with ESMTPS id y4sm38036292pbe.4.2011.10.21.22.13.07 (version=SSLv3 cipher=OTHER); Fri, 21 Oct 2011 22:13:09 -0700 (PDT) Message-ID: <4EA250E0.3080808@gmail.com> Date: Sat, 22 Oct 2011 12:30:00 -0000 From: xunxun User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0) Gecko/20110929 Thunderbird/7.0 MIME-Version: 1.0 To: jojelino CC: gcc@gcc.gnu.org, qemu-devel@nongnu.org, Kai Tietz Subject: Re: gcc auto-omit-frame-pointer vs msvc longjmp References: <4E9BB180.6080506@mc.net> <4E9C0497.2000605@siriusit.co.uk> <4E9C3703.3040109@mc.net> <4E9C645A.5060200@twiddle.net> <4E9C9C08.20001@mc.net> <4E9CAACE.4070804@mc.net> <4E9F3BB4.3050604@mc.net> In-Reply-To: Content-Type: multipart/mixed; boundary="------------070408020803070204090004" X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2011-10/txt/msg00398.txt.bz2 This is a multi-part message in MIME format. --------------070408020803070204090004 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-length: 535 Hi, all It seems that gcc's auto-omit-frame-pointer has other problems. The example is from mingw bug tracker: http://sourceforge.net/tracker/?func=detail&aid=3426555&group_id=2435&atid=102435 g++ -O3 main.cpp running will crash. g++ -O2 main.cpp running no crash. g++ -O3 -fno-omit-frame-pointer running no crash. I don't know in the end which optimize option defaultly contains this switch "-fomit-frame-pointer" on i686-pc-mingw32 or x86_64-w64-mingw32? -- Best Regards, xunxun --------------070408020803070204090004 Content-Type: text/plain; name="main.cpp" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="main.cpp" Content-length: 1017 I2luY2x1ZGUgPHZlY3Rvcj4NCg0KdHlwZWRlZiB2b2lkICgqRnVuYykoY2hh ciopOw0KDQpib29sIGxpZSA9IGZhbHNlOw0KRnVuYyBkdW1teSA9IDA7DQoN CnZvaWQgbW92ZVRvV2luZG93c1JlY3ljbGVyKGNvbnN0IHN0ZDo6dmVjdG9y PGludD4mIGZpbGVzVG9EZWxldGUgPSBzdGQ6OnZlY3RvcjxpbnQ+KCkpICAv L3Rocm93IEZpbGVFcnJvcg0Kew0KICAgIGlmICghbGllKQ0KICAgICAgICB0 aHJvdyAxOw0KDQogICAgY2hhciBlcnJvck1lc3NhZ2VbMjAwMDBdOw0KDQog ICAgRnVuYyBmdW4gPSBsaWUgPyAgZHVtbXkgOiAwOw0KICAgIGZ1bihlcnJv ck1lc3NhZ2UpOw0KDQogICAgc3RkOjp2ZWN0b3I8aW50PiBmaWxlTmFtZXM7 DQoNCiAgICBmb3IgKHN0ZDo6dmVjdG9yPGludD46OmNvbnN0X2l0ZXJhdG9y IGl0ZXIgPSBmaWxlc1RvRGVsZXRlLmJlZ2luKCk7IGl0ZXIgIT0gZmlsZXNU b0RlbGV0ZS5lbmQoKTsgKytpdGVyKQ0KICAgICAgICBmaWxlTmFtZXMucHVz aF9iYWNrKCppdGVyKTsNCn0NCg0Kdm9pZCB3Z2ZkZnNkZ2ZzZGdmc2RnKCkg IC8vdGhyb3cgRmlsZUVycm9yDQp7DQogICAgOjptb3ZlVG9XaW5kb3dzUmVj eWNsZXIoKTsgIC8vdGhyb3cgRmlsZUVycm9yDQp9DQoNCmludCBtYWluKCkN CnsNCiAgICB0cnkNCiAgICB7DQogICAgICAgIG1vdmVUb1dpbmRvd3NSZWN5 Y2xlcigpICA7Ly90aHJvdyBGaWxlRXJyb3INCiAgICB9DQogICAgY2F0Y2gg KC4uLikge30NCg0KICAgIHJldHVybiAwOw0KfQ0K --------------070408020803070204090004--