From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?Gerd_M=C3=B6llmann?= Newsgroups: gmane.emacs.devel Subject: Re: MPS: assertion failed: header_type (h) != IGC_OBJ_FWD Date: Tue, 16 Jul 2024 16:39:46 +0200 Message-ID: References: <86zfqhh2xv.fsf@gnu.org> <86y161h1e8.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32874"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: eggert@cs.ucla.edu, pipcet@protonmail.com, emacs-devel@gnu.org, eller.helmut@gmail.com To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jul 16 16:40:55 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sTjMM-0008Do-Je for ged-emacs-devel@m.gmane-mx.org; Tue, 16 Jul 2024 16:40:54 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTjLO-0008Go-Lw; Tue, 16 Jul 2024 10:39:54 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTjLM-0008GZ-9H for emacs-devel@gnu.org; Tue, 16 Jul 2024 10:39:52 -0400 Original-Received: from mail-wr1-x42a.google.com ([2a00:1450:4864:20::42a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sTjLK-0002C7-B6; Tue, 16 Jul 2024 10:39:52 -0400 Original-Received: by mail-wr1-x42a.google.com with SMTP id ffacd0b85a97d-36799fb93baso3372792f8f.0; Tue, 16 Jul 2024 07:39:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1721140788; x=1721745588; darn=gnu.org; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:from:to:cc:subject:date:message-id:reply-to; bh=vS2I3XAvzMievazKeXnWA93iG+r532ib4xwtwOiTmmg=; b=L1Oyf/E2TeGVrpMyy9ef4WaROTsarsaqj8YuLun0KLhFHiil9DdB8e3vdrq1u6MMK9 vIQygPyaoTMNam/6OoYU9hbAEwpflezfNtbXk3TfZkvqr93Os4BvvMZ5/XN4a78pH+3j 0fAgmLn8EdWOlXtKlWOMUjcZ5w8ZmqKIYDVi4MZX8qlI1uXKYBk9sw3kRop3wJ6LmLA1 TdoMELlTm8AWe247BL9NYZo2GFnCWfM6LpMFcYkO2et8boqQPzaQYEqHciMSOG05fpzR Xe7r+XgHVO9llggrscDhYpfJROXuXKc1n/L/URvXB27zs05D4/ojflxDwPusmXjowEFN MU8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721140788; x=1721745588; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=vS2I3XAvzMievazKeXnWA93iG+r532ib4xwtwOiTmmg=; b=W7QBhzEBnwlSIQIBLHKF5Y7lC9Bn3VDFZ2bUc5keE2Umj8tJYQJpBSZe6nsvsEFGsH hw++zLAT7M5tS9GEtOKgUq/S15PQGYoGjqcLghOoaHwaQrPZE2aB1GK1timuseEj7oQN l2GUxy9cqSnWxVpR7pgJzKf+OPyHPYqzmREZm9N36DAk6rXGNvYNW6SzxwNqIZD6VT3i URfmkSr8hy+7HXMdcezkDlAzG/03IRih6bpoqfaJ+rzyg+Unh2huZoG9MBRIF5oQKSGo eoHi1a1+1doW9E7IJBU7E0RE6brLbqhj3UaMvRsgx/W1qx2bG5vVfjqdKwetTg9F6oEL XwsA== X-Forwarded-Encrypted: i=1; AJvYcCXKMYw2xaDBDV+qAcNzN3xUeBrCf4T65mxcqO2wQ4bhQQK3idUTdrzqJa/sn8n6u2oRorTI1sfQlW33l9hVge72ulGA X-Gm-Message-State: AOJu0YycXulcE6qMEP5uNHwcd0/x/xWVTcONAYUPEluDHqVR40tptV9X AIaIAHqnh3tRh5K7Iq6eUIad76xtZVbCIOZOVijrlL9sIww1O2t0 X-Google-Smtp-Source: AGHT+IEBFtVgF2LvHfIw7jG249C1VsulmaMcUti+GP0SYNxWfhWIltd3GqmI8wVDgfMXuiGC1jjc4Q== X-Received: by 2002:a5d:5f93:0:b0:367:880f:b8b0 with SMTP id ffacd0b85a97d-36825f6618dmr1989845f8f.8.1721140788196; Tue, 16 Jul 2024 07:39:48 -0700 (PDT) Original-Received: from pro2.fritz.box (p4fe3aae8.dip0.t-ipconnect.de. [79.227.170.232]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3680dab3e1csm9221897f8f.2.2024.07.16.07.39.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jul 2024 07:39:47 -0700 (PDT) In-Reply-To: <86y161h1e8.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 16 Jul 2024 17:11:59 +0300") Received-SPF: pass client-ip=2a00:1450:4864:20::42a; envelope-from=gerd.moellmann@gmail.com; helo=mail-wr1-x42a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:321709 Archived-At: Eli Zaretskii writes: >> Example with sizeof(int) = 4, and sizeof(void *) = 8 >> >> struct x >> { >> int x; >> struct Lisp_Symbol *s; >> }; >> >> What about the offset of x::s? > > The pointer or the Lisp_Symbol struct it points to? What is offsetof (struct x, s)? Is it guaranteed to be 8 in this case? But it's not limited to struct members. The question is similar for control stacks, and anything allocated via malloc. Given an address range [start, end) to scan with scan_ambig, where can references be found?