From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 66497 invoked by alias); 11 Sep 2018 16:04:34 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 66472 invoked by uid 89); 11 Sep 2018 16:04:33 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= X-HELO: gateway31.websitewelcome.com Received: from gateway31.websitewelcome.com (HELO gateway31.websitewelcome.com) (192.185.143.46) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 11 Sep 2018 16:04:31 +0000 Received: from cm12.websitewelcome.com (cm12.websitewelcome.com [100.42.49.8]) by gateway31.websitewelcome.com (Postfix) with ESMTP id 5894A13922 for ; Tue, 11 Sep 2018 11:04:30 -0500 (CDT) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with SMTP id zl96fI6KASjJAzl9IfuZpB; Tue, 11 Sep 2018 11:04:29 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=m9bXTbNOxEOqfPDMHLIX7YTtosRi5v3wws7lpl4oxWE=; b=Xss5veRFOnFR9QbWFOsexa/vwp eccFAsAbumKjjQgKGgiPhI1embFRCMSUC7jeZTVBbQXbc6Q+nDwzvLjYBjrDzUS0WS/zs8Xr+Lj9g JkYzyixI50iVrvq4euuj2k091; Received: from 97-122-189-157.hlrn.qwest.net ([97.122.189.157]:58584 helo=pokyo) by box5379.bluehost.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1fzl96-0045Rj-2C; Tue, 11 Sep 2018 11:04:08 -0500 From: Tom Tromey To: Alan Modra Cc: binutils@sourceware.org, gdb-patches@sourceware.org Subject: Re: PR23425, unresolved symbol diagnostic References: <20180907195832.5423-1-hjl.tools@gmail.com> <20180911021757.GE3174@bubble.grove.modra.org> <20180911151714.GH3174@bubble.grove.modra.org> Date: Tue, 11 Sep 2018 16:04:00 -0000 In-Reply-To: <20180911151714.GH3174@bubble.grove.modra.org> (Alan Modra's message of "Wed, 12 Sep 2018 00:47:14 +0930") Message-ID: <87worsqavc.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SW-Source: 2018-09/txt/msg00340.txt.bz2 >>>>> "Alan" == Alan Modra writes: Alan> I think this should be OK for all the gdb uses of Alan> bfd_simple_get_relocated_section_contents or similar code in Alan> compile-object-load.c, but I won't commit this immediately to give gdb Alan> folk time to comment. There should be gdb test cases covering the relocation cases. For the compile feature you'll need to make sure your gcc is compile-capable and that the needed library and plugin are installed. However, I believe relocation isn't only used for the compile feature. There's this in dwarf2read.c: /* When debugging .o files, we may need to apply relocations; see http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . We never compress sections in .o files, so we only need to try this when the section is not compressed. */ retbuf = symfile_relocate_debug_section (objfile, sectp, buf); I don't know if there is a test case for this or not -- I'd hope so. Tom