From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id EVyoJ0BcnWAsAQAAWB0awg (envelope-from ) for ; Thu, 13 May 2021 13:05:04 -0400 Received: by simark.ca (Postfix, from userid 112) id 94C821F11C; Thu, 13 May 2021 13:05:04 -0400 (EDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on simark.ca X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED, MAILING_LIST_MULTI,T_DKIM_INVALID,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id DE6831E813 for ; Thu, 13 May 2021 13:05:03 -0400 (EDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 971B73A390E3; Thu, 13 May 2021 17:05:03 +0000 (GMT) Received: from gateway21.websitewelcome.com (gateway21.websitewelcome.com [192.185.45.140]) by sourceware.org (Postfix) with ESMTPS id B99C2393A439 for ; Thu, 13 May 2021 17:05:00 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org B99C2393A439 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 cm13.websitewelcome.com (cm13.websitewelcome.com [100.42.49.6]) by gateway21.websitewelcome.com (Postfix) with ESMTP id 331784010CE79 for ; Thu, 13 May 2021 12:04:59 -0500 (CDT) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with SMTP id hElfl6fKhAEP6hElfl5i9y; Thu, 13 May 2021 12:04:59 -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=YNi+3lyBHk2tP3UME5FPzuDsF1VSGnSSvXWoN3dh66o=; b=l6f0zxj1Ar0QW72JmaTuxSFeTy 0vStMAnLVQ1AYCR6p6Ry1whDEb170snBGxMR41155AHP6vethAHMvEeYZ1o0+pKYNXBAnB5QFsGCQ DZ3f31w0JLGCk/yWlaByUU8Df; Received: from 75-166-134-27.hlrn.qwest.net ([75.166.134.27]:53060 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 1lhEle-002uEp-Qt; Thu, 13 May 2021 11:04:58 -0600 From: Tom Tromey To: Simon Marchi via Gdb-patches Subject: Re: [PATCH 0/1] Integrate GNU poke in GDB References: <20210510151044.20829-1-jose.marchesi@oracle.com> <9f1f3ee3-f31e-2941-3f6b-f54552f5c16b@polymtl.ca> X-Attribution: Tom Date: Thu, 13 May 2021 11:04:58 -0600 In-Reply-To: <9f1f3ee3-f31e-2941-3f6b-f54552f5c16b@polymtl.ca> (Simon Marchi via Gdb-patches's message of "Mon, 10 May 2021 14:39:08 -0400") Message-ID: <87wns24lad.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: 75.166.134.27 X-Source-L: No X-Exim-ID: 1lhEle-002uEp-Qt X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 75-166-134-27.hlrn.qwest.net (murgatroyd) [75.166.134.27]:53060 X-Source-Auth: tom+tromey.com X-Email-Count: 1 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces@sourceware.org Sender: "Gdb-patches" >>>>> "Simon" == Simon Marchi via Gdb-patches writes: Simon> I don't find this super clear, as we could always see it both Simon> ways. One my pet peeves about autoconf is that the --with/--enable distinction is too subtle to ever remember or care about. Like, what would it mean if a program had both --enable-x and --with-x? I think it would be better to just declare them as synonyms. Simon> From target_read_raw_memory's doc: Simon> /* Like target_read_memory, but specify explicitly that this is a read Simon> from the target's raw memory. That is, this read bypasses the Simon> dcache, breakpoint shadowing, etc. */ Simon> So, it bypasses a cache in GDB (not sure why that's important). gdb tries to cache some memory to avoid excess requests to the remote. This matters if you have a slow connection. >> - How can I demangle C++ identifiers? And how can I detect when >> a given type is a C++ one that needs demangling? Simon> I think that we usually rely on the language of the compilation unit, as Simon> given by DWARF, to know that a symbol has a C++ mangled name and needs Simon> demangling. I can't remember if I mentioned this elsewhere, but type names aren't normally mangled. Symbol names for variables or functions can be, but gdb already does the demangling if you use the correct accessor. Tom