From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27099 invoked by alias); 8 Jan 2010 03:52:25 -0000 Received: (qmail 27053 invoked by uid 48); 8 Jan 2010 03:52:09 -0000 Date: Fri, 08 Jan 2010 03:52:00 -0000 Message-ID: <20100108035209.27052.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/42631] [4.5 Regression] "-fcompare-debug failure" with "-O1 -funroll-loops" In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "zadeck at naturalbridge dot com" 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 X-SW-Source: 2010-01/txt/msg00891.txt.bz2 ------- Comment #11 from zadeck at naturalbridge dot com 2010-01-08 03:52 ------- I really do not know what to say here. There is a first do no harm principal here. it does not sound like this is really a bug and i do not think that mucking with the compiler to make a test on a program that has undefined behavior is really the right thing to do. this really is not so much a df question as a question for what kinds of behavior are we going to consider to be "correct". kenny -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42631