From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gateway30.websitewelcome.com (gateway30.websitewelcome.com [192.185.160.12]) by sourceware.org (Postfix) with ESMTPS id 31B6C384B801 for ; Thu, 6 May 2021 19:45:09 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 31B6C384B801 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=tom@tromey.com Received: from cm10.websitewelcome.com (cm10.websitewelcome.com [100.42.49.4]) by gateway30.websitewelcome.com (Postfix) with ESMTP id A9544591C for ; Thu, 6 May 2021 14:45:07 -0500 (CDT) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with SMTP id ejvnl2ft2N7CDejvnlg0xb; Thu, 06 May 2021 14:45:07 -0500 X-Authority-Reason: nr=8 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=JPf477skUR4coJBkh0feaujU93JJDQHN55DvdIG2oo4=; b=Kxw5mHD9amwRpOGWEbcLxCsQmv 2vx9SBcy76iAlgtrg0oaD11CuozV8QYrjRNkIKmEW5BMbr4tocbfg3L1GKk764JbzfCsN+9Lp+erR lTEgqg27+TCKJshvGucfQ7o6l; Received: from 97-122-70-176.hlrn.qwest.net ([97.122.70.176]:37436 helo=murgatroyd) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1lejvn-003lMg-Bu; Thu, 06 May 2021 13:45:07 -0600 From: Tom Tromey To: Ulrich Weigand via Gcc Cc: gdb@sourceware.org, Ulrich Weigand Subject: Re: Issue with pointer types marked with scalar_storage_order References: <20210506123308.GA27332@oc3748833570.ibm.com> X-Attribution: Tom Date: Thu, 06 May 2021 13:45:06 -0600 In-Reply-To: <20210506123308.GA27332@oc3748833570.ibm.com> (Ulrich Weigand via Gcc's message of "Thu, 6 May 2021 14:33:08 +0200") Message-ID: <87a6p7pry5.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 97.122.70.176 X-Source-L: No X-Exim-ID: 1lejvn-003lMg-Bu X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 97-122-70-176.hlrn.qwest.net (murgatroyd) [97.122.70.176]:37436 X-Source-Auth: tom+tromey.com X-Email-Count: 2 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3027.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, JMQ_SPF_NEUTRAL, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_NEUTRAL, TXREP autolearn=no 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: Thu, 06 May 2021 19:45:12 -0000 >>>>> "Ulrich" == Ulrich Weigand via Gcc writes: Ulrich> If we do want to byte-swap pointer types, then I guess we need Ulrich> to still fix the debug info problem, which I guess would at a Ulrich> minimum require extending DWARF to allow DW_AT_endianity as an Ulrich> attribute to DW_TAG_pointer_type (and then probably also Ulrich> DW_TAG_reference_type, DW_TAG_rvalue_reference_type, Ulrich> DW_TAG_ptr_to_member_type and possibly others). Also, the Ulrich> implementation in GDB would need to be changed accordingly. Ulrich> Any comments or suggestions on what to do here? This kind of extension is pretty normal in DWARF, so I think it isn't a big deal to emit it. Consumers are ordinarily expected to simply ignore things they don't understand. Tom