From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 120899 invoked by alias); 14 Jul 2017 07:37:43 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 120882 invoked by uid 89); 14 Jul 2017 07:37:42 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=2.1 required=5.0 tests=BAYES_00,BODY_8BITS,GARBLED_BODY,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=no version=3.3.2 spammy=HContent-Transfer-Encoding:8bit X-Spam-User: qpsmtpd, 2 recipients X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 14 Jul 2017 07:37:41 +0000 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4103E7F3F1; Fri, 14 Jul 2017 07:37:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4103E7F3F1 Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=law@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 4103E7F3F1 Received: from localhost.localdomain (ovpn-116-196.phx2.redhat.com [10.3.116.196]) by smtp.corp.redhat.com (Postfix) with ESMTP id 96C1A6E8F0; Fri, 14 Jul 2017 07:37:39 +0000 (UTC) Subject: Re: Add support to trace comparison instructions and switch statements To: =?UTF-8?B?5ZC05r2N5rWgKOatpOW9vCk=?= , gcc , gcc-patches Cc: wishwu007 References: <234840fd-a06a-4dfd-a1c5-254e26144754.weixi.wwx@antfin.com> From: Jeff Law Message-ID: <19d526e0-70b8-dc6c-e96d-5d33666c140b@redhat.com> Date: Fri, 14 Jul 2017 07:37:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <234840fd-a06a-4dfd-a1c5-254e26144754.weixi.wwx@antfin.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2017-07/txt/msg00799.txt.bz2 On 07/10/2017 06:07 AM, 吴潍浠(此彼) wrote: > Hi > > I write some codes to make gcc support comparison-guided fuzzing. > It is very like http://clang.llvm.org/docs/SanitizerCoverage.html#tracing-data-flow . > With -fsanitize-coverage=trace-cmp the compiler will insert extra instrumentation around comparison instructions and switch statements. > I think it is useful for fuzzing. :D > > Patch is below, I may supply test cases later. Before anyone can really look at this code you'll need to get a copyright assignment on file with the FSF. See: https://gcc.gnu.org/contribute.html If you've already done this, please let me know and I'll confirm with the FSF copyright clerk. Jeff