From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14126 invoked by alias); 16 May 2006 18:06:02 -0000 Received: (qmail 14111 invoked by uid 22791); 16 May 2006 18:06:00 -0000 X-Spam-Status: No, hits=-1.6 required=5.0 tests=AWL,BAYES_00,SPF_FAIL X-Spam-Check-By: sourceware.org Received: from gateway.sf.frob.com (HELO gateway.sf.frob.com) (64.81.54.130) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 16 May 2006 18:05:31 +0000 Received: from magilla.sf.frob.com (magilla.sf.frob.com [198.49.250.228]) by gateway.sf.frob.com (Postfix) with ESMTP id B95D4357B; Tue, 16 May 2006 11:05:27 -0700 (PDT) Received: by magilla.sf.frob.com (Postfix, from userid 5281) id 546F8180053; Tue, 16 May 2006 11:05:27 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit From: Roland McGrath To: "Yi Feng" Cc: "Frank Ch. Eigler" , systemtap@sources.redhat.com Subject: Re: Repost: Inaccurate function parameter location in debug info with gcc 3.x and 4.0 In-Reply-To: Yi Feng's message of Tuesday, 16 May 2006 10:50:05 -0700 <4acfb6400605161050w63bbf78fp9ac26e7f2f8d913c@mail.gmail.com> X-Antipastobozoticataclysm: Bariumenemanilow Message-Id: <20060516180527.546F8180053@magilla.sf.frob.com> Date: Tue, 16 May 2006 18:06:00 -0000 X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q2/txt/msg00421.txt.bz2 We have come across some bugs in gcc's DWARF generation in the course of systemtap development. We mostly pay attention to the current compiler versions (now gcc 4.1), but we have also had some fixes backported to the 3.4-based version used in RHEL4. Frank might have a list of the gcc or redhat bugzilla items reported about these things. I don't have one off hand. To figure out if your issues are affected by those changes, you might try a gcc build from the sources in this branch: svn://gcc.gnu.org/svn/gcc/branches/redhat/gcc-3_4-branch I'm not sure that anyone working on systemtap is using kernels built with gcc 3 any longer, except for RHEL4 kernels, which are built with a compiler from this branch. Thanks, Roland