From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gerd =?UTF-8?Q?M=C3=B6llmann?= Newsgroups: gmane.emacs.bugs Subject: bug#58113: 29.0.50; [noverlay] Segmentation fault while building on macOS Date: Wed, 28 Sep 2022 06:29:33 +0200 Message-ID: References: <83v8p8iwzq.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="31246"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (darwin) Cc: 58113@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 28 06:30:17 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1odOi9-0007yQ-Ex for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 28 Sep 2022 06:30:17 +0200 Original-Received: from localhost ([::1]:46782 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1odOi7-00065I-RH for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 28 Sep 2022 00:30:15 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56388) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odOhv-00064w-Pv for bug-gnu-emacs@gnu.org; Wed, 28 Sep 2022 00:30:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:59168) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1odOhu-00008l-Dt for bug-gnu-emacs@gnu.org; Wed, 28 Sep 2022 00:30:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1odOhu-0004Lk-6n for bug-gnu-emacs@gnu.org; Wed, 28 Sep 2022 00:30:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Gerd =?UTF-8?Q?M=C3=B6llmann?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 28 Sep 2022 04:30:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 58113 X-GNU-PR-Package: emacs Original-Received: via spool by 58113-submit@debbugs.gnu.org id=B58113.166433938716677 (code B ref 58113); Wed, 28 Sep 2022 04:30:02 +0000 Original-Received: (at 58113) by debbugs.gnu.org; 28 Sep 2022 04:29:47 +0000 Original-Received: from localhost ([127.0.0.1]:58246 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1odOhf-0004Ku-Ao for submit@debbugs.gnu.org; Wed, 28 Sep 2022 00:29:47 -0400 Original-Received: from mail-ed1-f46.google.com ([209.85.208.46]:37446) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1odOha-0004Ke-Ph for 58113@debbugs.gnu.org; Wed, 28 Sep 2022 00:29:46 -0400 Original-Received: by mail-ed1-f46.google.com with SMTP id a41so15706120edf.4 for <58113@debbugs.gnu.org>; Tue, 27 Sep 2022 21:29:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:from:to:cc:subject:date; bh=s7X/G8fkc4fV38dgQOi5z1ia0Ip37OSUp50PuPiGCTo=; b=SnWZL+4P3gtrWC4ryH4Xnr7uXWBYrnuixEmCeS5fePsVJorEm6ooXG3VXmZY0pfiOg Ac10V3E1aSBGra5aYdxYpdJqbMtYd5B6NmyPmiEBLB859kVPJRnhxMgilCT1/UES+3uN 8nxE9QYkx1aTLZuKvl73UGV5N9M8xWqHOw2lbbeL5yL0GyV9PSvVOafPAbossvw47cKT YBBilAG4MC1aFCAsWwzepCVql8mJvSbd6PoZKpefO5auApp9qzOWnmuqFnSiU+AxKCWc 2bH/6ISOdzRKKbSNLKyOf21FYXoFwAhU1k+VaBRhRNJZiCpG7c8QwKKSMGBmQj0+Zx2E RLKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=s7X/G8fkc4fV38dgQOi5z1ia0Ip37OSUp50PuPiGCTo=; b=Qg4QKwZnQkcjE7GewbhUtWK4GNpixWp30Qy70rPLdB+KBciFLNZz47PT9r7psrMkS3 U/7Cqvdt1uxhjt6F6IjcN9xMsPKyvzQ4YEqyiImfcw3ZtGDkzHfqW6tMeJJ7wp8zy2Yb hvCL+owAqIrq0BRwmhTou/NaWAEpybbWfX8gASPFYEap/c6vF5wUE+B6t70WBQ7zRcRh ks+P9iK+5sSEF7eS3qKiWk1VQyHHQBHRrzN5hdB8/jIMfLuBN1iORriae4HIX1m0DNqx WH+BQtkGblVQH9B3RJG2uSHo89bwXaKzSWTvxKWeMCO6qGJg9h4jDNGOErSaSZjXIffE fonw== X-Gm-Message-State: ACrzQf3s3K6mPTwm2917icghU8fJPBtdsnhOWfMJ53VJ0oLz5/qL/R60 cxVvzcu1u1tqZ9qXmnprKZ4fhvHz4GQ= X-Google-Smtp-Source: AMsMyM6Oh0VvVUr5CJoLYm6Geh8IZw3Twqlr5RJvylEa0b+lQWN0LjLBi9Rpm0pBnBZknhV4UNB36A== X-Received: by 2002:a05:6402:548f:b0:457:ed40:5f58 with SMTP id fg15-20020a056402548f00b00457ed405f58mr849356edb.408.1664339376140; Tue, 27 Sep 2022 21:29:36 -0700 (PDT) Original-Received: from Mini.fritz.box (pd9e36b47.dip0.t-ipconnect.de. [217.227.107.71]) by smtp.gmail.com with ESMTPSA id rn13-20020a170906d92d00b0077a7c01f263sm1696306ejb.88.2022.09.27.21.29.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Sep 2022 21:29:35 -0700 (PDT) In-Reply-To: <83v8p8iwzq.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 27 Sep 2022 19:48:57 +0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:243783 Archived-At: Eli Zaretskii writes: >> (lldb) p tree->size >> (intmax_t) $0 = 26 >> (lldb) p &tree->null >> (interval_node *) $1 = 0x0000600002c03f08 >> (lldb) p tree->root >> (interval_node *) $2 = 0x0000600002c03f08 > > What does tree->null represent? Does it represent an empty tree? If > so, I guess tree->size is not maintained correctly? I surmise it means the tree is empty. The tree->null thing reminds me of the MEM_NIL I used in the red-black tree in alloc.c. It is sort of a "trick" to make a red-black tree implementation more "elegant". Although--one such node per tree looks a bit odd to me. But what do I know. I'll see if I can spot something obvious that goes wrong with the size. Otherwiese, it would be good if someone who can build an Emacs from the branch could write some more tests. [ A more general question is why the existing red-black tree hasn't been hoisted from alloc.c? Or even, why not use a ready-made interval tree like the one in the Linux kernel, which is also an augmented rb-tree? That would be much more confidence-inducing than this. ]