From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#65726: 29.1.50; Crash in regexp engine Date: Mon, 04 Sep 2023 15:12:53 +0300 Message-ID: <83fs3u5e7u.fsf@gnu.org> References: <8e1b4e50-0430-3eb3-e486-60def1e4821f@gmx.at> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32690"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rudalics@gmx.at, 65726@debbugs.gnu.org To: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Sep 04 14:14:26 2023 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 1qd8TJ-0008Jd-NF for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 04 Sep 2023 14:14:25 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qd8T1-0003Vz-MH; Mon, 04 Sep 2023 08:14:10 -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 1qd8Sw-0003Uo-KD for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2023 08:14:02 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qd8Sw-0005kr-B5 for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2023 08:14:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qd8Sv-0002df-Rh for bug-gnu-emacs@gnu.org; Mon, 04 Sep 2023 08:14:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 04 Sep 2023 12:14:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 65726 X-GNU-PR-Package: emacs Original-Received: via spool by 65726-submit@debbugs.gnu.org id=B65726.169382960710093 (code B ref 65726); Mon, 04 Sep 2023 12:14:01 +0000 Original-Received: (at 65726) by debbugs.gnu.org; 4 Sep 2023 12:13:27 +0000 Original-Received: from localhost ([127.0.0.1]:48982 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qd8SN-0002cj-5f for submit@debbugs.gnu.org; Mon, 04 Sep 2023 08:13:27 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37670) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qd8SH-0002cP-QF for 65726@debbugs.gnu.org; Mon, 04 Sep 2023 08:13:25 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qd8SC-0005ZL-5M; Mon, 04 Sep 2023 08:13:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=+yxNqjQ9nNhThm+ltcZQlPUZv/iT52kn1GOIMiUFXew=; b=r9RQ4cYJ/dwEnjM5LN3J i7pdThT3WxIPPYb3C2+VhhqhsG/e89jHYWjzH8nxucxcw5msqBfKuBAC+RQAjDSywKiCWQIbiJ8VK oQVGxipU9KAvfJ6JKHRm6FFzjnvUZSKpXK0/HKnxB9NY3fbdm4ygroqFQpzZ/Jz0beEWiejvNll92 qIdepKTUrgrc8oxw+VcJqO42FkN0c87qJFLawFQsihepwnf+/EmsxHJ1WMCslOZW8RUojWC6x0OZN sH7xZm6wlkC7mymE5JwJ6ZRuPdO0MP8+a13trZh0zJ+FTEcqSsTAjiy1BW5fMp67CpXY/pKsyA7Xf dxVo50ScdjW5Jg==; In-Reply-To: (message from Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= on Mon, 4 Sep 2023 10:44:06 +0200) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:269233 Archived-At: > Cc: martin rudalics > From: Mattias Engdegård > Date: Mon, 4 Sep 2023 10:44:06 +0200 > > Can't reproduce here (macOS). Can you give us a deeper backtrace? I can reproduce on MS-Windows. It's an infinite recursion. > Try finding out the Lisp context: what function is called and with what arguments? What is the regexp, exactly? What text does it attempt to match against? Here's the end of the call stack: #104528 0x0120bbc4 in search_buffer_re (string=XIL(0x8000000007e5e308), pos=62669, pos_byte=62669, lim=300101, lim_byte=300103, n=1, trt=XIL(0xa00000000631c92c), inverse_trt=XIL(0xa000000006231ed4), posix=false) at search.c:1265 #104529 0x0120cae5 in search_buffer (string=XIL(0x8000000007e5e308), pos=62669, pos_byte=62669, lim=300101, lim_byte=300103, n=1, RE=1, trt=XIL(0xa00000000631c92c), inverse_trt=XIL(0xa000000006231ed4), posix=false) at search.c:1527 #104530 0x0120b404 in search_command (string=XIL(0x8000000007e5e308), bound=XIL(0), noerror=XIL(0x30), count=XIL(0), direction=1, RE=1, posix=false) at search.c:1069 #104531 0x0120e35a in Fre_search_forward (regexp=XIL(0x8000000007e5e308), bound=XIL(0), noerror=XIL(0x30), count=XIL(0)) at search.c:2294 #104532 0x0127860e in eval_sub (form=XIL(0xc000000007dbef40)) at eval.c:2508 #104533 0x0126f601 in Fand (args=XIL(0xc000000007dbe810)) at eval.c:370 #104534 0x012780e0 in eval_sub (form=XIL(0xc000000007dbef30)) at eval.c:2449 #104535 0x0126f847 in Fcond (args=XIL(0xc000000007e16d00)) at eval.c:412 #104536 0x012780e0 in eval_sub (form=XIL(0xc000000007e16d70)) at eval.c:2449 #104537 0x0126fa9d in Fprogn (body=XIL(0)) at eval.c:436 #104538 0x01272b16 in Flet (args=XIL(0xc000000007e16d90)) at eval.c:1026 #104539 0x012780e0 in eval_sub (form=XIL(0xc000000007e16da0)) at eval.c:2449 #104540 0x0126fa9d in Fprogn (body=XIL(0)) at eval.c:436 #104541 0x012780e0 in eval_sub (form=XIL(0xc000000007e17740)) at eval.c:2449 #104542 0x0126f74a in Fif (args=XIL(0xc000000007e16dd0)) at eval.c:391 #104543 0x012780e0 in eval_sub (form=XIL(0xc000000007e16dc0)) at eval.c:2449 #104544 0x0126fa9d in Fprogn (body=XIL(0)) at eval.c:436 #104545 0x01272b16 in Flet (args=XIL(0xc000000007e16e00)) at eval.c:1026 #104546 0x012780e0 in eval_sub (form=XIL(0xc000000007e16e10)) at eval.c:2449 #104547 0x0126fa9d in Fprogn (body=XIL(0)) at eval.c:436 #104548 0x0126f7ae in Fif (args=XIL(0xc000000007e16e30)) at eval.c:392 #104549 0x012780e0 in eval_sub (form=XIL(0xc000000007e16e20)) at eval.c:2449 #104550 0x0126fa9d in Fprogn (body=XIL(0xc000000007dbeb50)) at eval.c:436 #104551 0x0127247c in FletX (args=XIL(0xc000000007e16fc0)) at eval.c:958 #104552 0x012780e0 in eval_sub (form=XIL(0xc000000007e16fd0)) at eval.c:2449 #104553 0x0126fa9d in Fprogn (body=XIL(0)) at eval.c:436 #104554 0x0127b95e in funcall_lambda (fun=XIL(0xc000000007dbe750), nargs=0, arg_vector=0x82ecb0) at eval.c:3233 #104555 0x0127a4c9 in funcall_general (fun=XIL(0xc000000007dbe750), numargs=0, args=0x82ecb0) at eval.c:2957 #104556 0x0127a6b7 in Ffuncall (nargs=1, args=0x82eca8) at eval.c:2995 #104557 0x012693e3 in Ffuncall_interactively (nargs=1, args=0x82eca8) at callint.c:250 #104558 0x0127ad17 in funcall_subr (subr=0x1881580 , numargs=1, args=0x82eca8) at eval.c:3059 #104559 0x0127a2cb in funcall_general (fun=XIL(0xa000000001881580), numargs=1, args=0x82eca8) at eval.c:2941 #104560 0x0127a6b7 in Ffuncall (nargs=2, args=0x82eca0) at eval.c:2995 #104561 0x012790cb in Fapply (nargs=3, args=0x82eca0) at eval.c:2619 #104562 0x01269ae9 in Fcall_interactively (function=XIL(0x60de7c0), record_flag=XIL(0), keys=XIL(0xa000000007970198)) at callint.c:342 #104563 0x0127a915 in funcall_subr (subr=0x18815c0 , numargs=3, args=0x6c50078) at eval.c:3038 #104564 0x012ed316 in exec_byte_code (fun=XIL(0xa00000000615797c), args_template=1025, nargs=1, args=0x82f590) at bytecode.c:809 #104565 0x0127ae66 in fetch_and_exec_byte_code (fun=XIL(0xa00000000615797c), args_template=1025, nargs=1, args=0x82f588) at eval.c:3081 #104566 0x0127b3c5 in funcall_lambda (fun=XIL(0xa00000000615797c), nargs=1, arg_vector=0x82f588) at eval.c:3153 #104567 0x0127a332 in funcall_general (fun=XIL(0xa00000000615797c), numargs=1, args=0x82f588) at eval.c:2945 #104568 0x0127a6b7 in Ffuncall (nargs=2, args=0x82f580) at eval.c:2995 #104569 0x0116d992 in call1 (fn=XIL(0x4590), arg1=XIL(0x60de7c0)) at lisp.h:3248 #104570 0x01171cb7 in command_loop_1 () at keyboard.c:1503 #104571 0x01274470 in internal_condition_case ( bfun=0x11710ec , handlers=XIL(0x90), hfun=0x11700ba ) at eval.c:1474 #104572 0x01170b59 in command_loop_2 (handlers=XIL(0x90)) at keyboard.c:1133 #104573 0x012732f7 in internal_catch (tag=XIL(0x103b0), func=0x1170b22 , arg=XIL(0x90)) at eval.c:1197 #104574 0x01170ac4 in command_loop () at keyboard.c:1111 #104575 0x0116fb1a in recursive_edit_1 () at keyboard.c:720 #104576 0x0116fdb8 in Frecursive_edit () at keyboard.c:803 #104577 0x0116ab60 in main (argc=2, argv=0xa428e0) at emacs.c:2521 Lisp Backtrace: "re-search-forward" (0x82d6a0) "and" (0x82d8a0) "cond" (0x82da60) "let" (0x82dcf0) "progn" (0x82deb0) "if" (0x82e070) "let" (0x82e300) "if" (0x82e500) "let*" (0x82e770) "elinfo-goto-texi" (0x82ecb0) "funcall-interactively" (0x82eca8) "call-interactively" (0x6c50078) "command-execute" (0x82f588) (gdb) In frame #104531, we have: #104531 0x0120e35a in Fre_search_forward (regexp=XIL(0x8000000007e5e308), bound=XIL(0), noerror=XIL(0x30), count=XIL(0)) at search.c:2294 and regexp is this monstrocity: "\\(split\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)-\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)window\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)[ \t\n]+\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)&optional\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)[ \t\n]+\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)window\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)[ \t\n]+\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)size\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)[ \t\n]+\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)side\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)[ \t\n]+\\(?:\\(?:@[a-z]+{\\|[}`'\"_:]*\\)*[ \t\n]*\\)pixelwise\\)\\|^node" Feel free to ask more questions, as I can reproduce this at will.