From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca (simark.ca [158.69.221.121]) by sourceware.org (Postfix) with ESMTPS id 2106D3850421 for ; Fri, 11 Sep 2020 14:49:08 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 2106D3850421 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=simark.ca Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=simark@simark.ca Received: from [172.16.0.95] (192-222-181-218.qc.cable.ebox.net [192.222.181.218]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPSA id 735991E009; Fri, 11 Sep 2020 10:49:07 -0400 (EDT) Subject: Re: Displaying variables from namespace with strange DWARF info To: Stas Perepelitsa , gdb@sourceware.org References: From: Simon Marchi Message-ID: <807038ce-913d-f8a1-2bad-bce2da867a6d@simark.ca> Date: Fri, 11 Sep 2020 10:49:06 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: tl Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, NICE_REPLY_A, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Sep 2020 14:49:09 -0000 On 2020-09-08 11:13 a.m., Stas Perepelitsa via Gdb wrote: > Hi All, > > I've got an ELF file compiled with a proprietary C/C++ compiler, where the > project contains namespaces. > > I’ve parsed DWARF info and it reveals that variables sitting in namespace > have their names fully qualified, like AAA::BBB::name. > > Another point, the compilation unit marked as C89 source regardless of C++ > source file taken as input file. > > And there are no attributes ’ DW_AT_namespace’ found in DWARF info. You mean DW_TAG_namespace? > (Checked same project with ARM compiler and yes, there are those attributes) > As a result, the variables from namespaces are neither displayed as > variables nor as expressions. Is there any chance to teach gdb how to > process such names? Yes, it would be by hacking in dwarf2/read.c. I don't know how easy or difficult this particular change would be though. Simon