From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id E424B1F4B4 for ; Tue, 22 Sep 2020 18:17:17 +0000 (UTC) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 0D6DC398792A; Tue, 22 Sep 2020 18:17:16 +0000 (GMT) Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) by sourceware.org (Postfix) with ESMTPS id E99EF386197D for ; Tue, 22 Sep 2020 18:17:12 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org E99EF386197D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=linux-m68k.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=whitebox@nefkom.net Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4BwqK361wJz1qs4B; Tue, 22 Sep 2020 20:17:11 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4BwqK35LcSz1r56r; Tue, 22 Sep 2020 20:17:11 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id t1y63tOyqyqu; Tue, 22 Sep 2020 20:17:10 +0200 (CEST) X-Auth-Info: EGFt2onbwMEkoF34BdsbhDuWUvG7e3jkQoLOcwzJC46pOruIvG0dS4tpcEbCbM7M Received: from igel.home (ppp-46-244-171-76.dynamic.mnet-online.de [46.244.171.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Tue, 22 Sep 2020 20:17:10 +0200 (CEST) Received: by igel.home (Postfix, from userid 1000) id 549152C2861; Tue, 22 Sep 2020 20:17:10 +0200 (CEST) From: Andreas Schwab To: Carlos O'Donell via Libc-alpha Subject: Re: [RFC PATCH 0/3] implement dlmopen hooks for gdb References: <20200626193228.1953-1-danielwa@cisco.com> <0f791d3a-20bc-4524-54eb-ce6df108fbff@redhat.com> <20200723184054.GD9875@zorba> <3ff42e45-b394-bf50-38c4-93baecc71497@redhat.com> <87h7rpwxke.fsf@oldenburg2.str.redhat.com> <87y2l1vhkn.fsf@oldenburg2.str.redhat.com> X-Yow: Look DEEP into the OPENINGS!! Do you see any ELVES or EDSELS... or a HIGHBALL??... Date: Tue, 22 Sep 2020 20:17:10 +0200 In-Reply-To: (Carlos O'Donell via Libc-alpha's message of "Tue, 22 Sep 2020 13:59:09 -0400") Message-ID: <87ft79ptg9.fsf@igel.home> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Weimer , "xe-linux-external\(mailer list\)" , "Jeremy Stenglein \(jstengle\)" , Pedro Alves Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" On Sep 22 2020, Carlos O'Donell via Libc-alpha wrote: > Yes, absolutely, I agree completely, for it to be useful the semantics > have to be: > > - If you detect a given symbol foo@GLIBC_DEBUG, then the feature is > present and has the semantics you expect. > > - If you want new semantics then you need to make a foo2@GLIBC_DEBUG > with the new semantics. > > What are the runtime semantics of the symbol? How do you access it? Isn't that the same situation as libthread_db? Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."