From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gproxy4-pub.mail.unifiedlayer.com (gproxy4-pub.mail.unifiedlayer.com [69.89.23.142]) by sourceware.org (Postfix) with ESMTPS id B007C385DC1D for ; Wed, 25 May 2022 20:13:05 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B007C385DC1D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from cmgw14.mail.unifiedlayer.com (unknown [10.0.90.129]) by progateway6.mail.pro1.eigbox.com (Postfix) with ESMTP id 9F50610047813 for ; Wed, 25 May 2022 20:13:04 +0000 (UTC) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTP id txNQnmDZahWk0txNQnRCUN; Wed, 25 May 2022 20:13:04 +0000 X-Authority-Reason: nr=8 X-Authority-Analysis: v=2.4 cv=IrfbzJzg c=1 sm=1 tr=0 ts=628e8dd0 a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=oZkIemNP1mAA:10:nop_rcvd_month_year a=Qbun_eYptAEA:10:endurance_base64_authed_username_1 a=_i3ZIZnpbwcpWawcBh0A:9 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=bmnREeHeK6q5ypd/M/cSTCw76MjzLUBi6S1gE1Om3ks=; b=tKEIHTesGm8dhjnU679aWbGliv Q+wnDutbXN9uPWqtw2L1M26bSyHpJBovRInVN1mGSzma3p43tHaCRiEzkVUKtdkoEyZNEWh1m5oCQ H6HlR3L/JgpewP8DY0O3b6EgI; Received: from 71-211-158-194.hlrn.qwest.net ([71.211.158.194]:55838 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 1ntxNP-002VDc-NW; Wed, 25 May 2022 14:13:03 -0600 From: Tom Tromey To: "Metzger, Markus T via Gdb-patches" Subject: Re: gdb parsing question References: X-Attribution: Tom Date: Wed, 25 May 2022 14:13:02 -0600 In-Reply-To: (Markus T. via Gdb-patches Metzger's message of "Wed, 25 May 2022 14:01:12 +0000") Message-ID: <87h75d8j75.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (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: 71.211.158.194 X-Source-L: No X-Exim-ID: 1ntxNP-002VDc-NW X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 71-211-158-194.hlrn.qwest.net (murgatroyd) [71.211.158.194]:55838 X-Source-Auth: tom+tromey.com X-Email-Count: 1 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3023.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, JMQ_SPF_NEUTRAL, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org 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: , X-List-Received-Date: Wed, 25 May 2022 20:13:06 -0000 > I'm debugging a fail in gdb.base/non-lazy-array-index.exp and I'm > wondering why, for parsing '$.f', gdb would lookup 'f' as global > symbol [1]? > I would have expected it to lookup the type of '$' and lookup 'f' in its members. I am not really sure, but the lexer in c-exp.y doesn't really know a whole lot. It often has no idea of the context, so when classifying a name it may do some lookup. That is, there may not be a real reason. Whether or not the result of this lookup is then used in the parser is a different question -- for example the field_name production seems to just use the underlying 'stoken', which is just the text. Tom