From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Welsh Duggan Newsgroups: gmane.emacs.bugs Subject: bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs Date: Mon, 29 Mar 2021 10:06:43 -0400 Message-ID: References: <87im5ofp3z.fsf@md5i.com> <83im5off16.fsf@gnu.org> <83h7l8fdfa.fsf@gnu.org> <871rccgqyz.fsf@igel.home> <83eegcfbrh.fsf@gnu.org> <8735wrrjx7.fsf@md5i.com> <83a6qzfxmc.fsf@gnu.org> <87sg4rclim.fsf@md5i.com> <83k0q3dzj7.fsf@gnu.org> <83czvvdw7o.fsf@gnu.org> <14e14f28-7ece-cd98-5e49-d4583a0153a0@gmx.at> <16b279ef-a1c2-cd41-b18c-69383174c72a@gmx.at> <87a6qs7z60.fsf@md5i.com> <83eeg3kawg.fsf@gnu.org> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19831"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Michael Welsh Duggan , "schwab@linux-m68k.org" , "47244@debbugs.gnu.org" <47244@debbugs.gnu.org> To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Mar 29 16:07:29 2021 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 1lQsYB-0004xZ-BR for geb-bug-gnu-emacs@m.gmane-mx.org; 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Mon, 29 Mar 2021 10:06:44 -0400 Original-Received: from lx-birch.ad.sei.cmu.edu (localhost [127.0.0.1]) by lx-birch.ad.sei.cmu.edu (8.14.7/8.14.7) with ESMTP id 12TE6hmB008534; Mon, 29 Mar 2021 10:06:44 -0400 Original-Received: (from mwd@localhost) by lx-birch.ad.sei.cmu.edu (8.14.7/8.14.7) id 12TE6hJ1008529; Mon, 29 Mar 2021 10:06:43 -0400 X-Authentication-Warning: lx-birch.ad.sei.cmu.edu: mwd set sender to mwd@cert.org using -f In-Reply-To: <83eeg3kawg.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 25 Mar 2021 02:25:19 -0400") 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:203237 Archived-At: --=-=-= Content-Type: text/plain Eli Zaretskii writes: >> From: Michael Welsh Duggan >> Cc: Michael Welsh Duggan , Eli Zaretskii , >> "mwd@md5i.com" , "schwab@linux-m68k.org" >> , "47244@debbugs.gnu.org" <47244@debbugs.gnu.org> >> Date: Wed, 24 Mar 2021 22:19:35 -0400 >> >> > --- a/src/buffer.c >> > +++ b/src/buffer.c >> > @@ -2151,6 +2151,9 @@ set_buffer_internal_1 (register struct buffer *b) >> > >> > BUFFER_CHECK_INDIRECTION (b); >> > >> > + if (!BUFFER_LIVE_P (b)) >> > + error ("Selecting deleted buffer"); >> > + >> > old_buf = current_buffer; >> > current_buffer = b; >> > last_known_column_point = -1; /* Invalidate indentation cache. */ >> >> Okay. Building now and will run until...something happens? Should I be >> expecting an Emacs error from this? > > Yes. > >> Should I breakpoint the error() clause? > > Better put a breakpoint on this call to 'error' instead, because > 'error' could be called for unrelated reasons, and it could be caught > -- you don't want those cases. I have now hit this breakpoint. Backtrace included. xbacktrace was empty. I'll leave the gdb session up for forensics. --=-=-= Content-Type: text/plain Content-Disposition: inline #0 set_buffer_internal_2 (b=0x5555578f43d8) at ../../master/src/buffer.c:2155 old_buf = 0x555555593480 <_start> tail = XIL(0) #1 0x0000555555713f28 in set_buffer_internal_1 (b=0x1) at ../../master/src/buffer.c:2141 #2 0x00005555556e4ec6 in set_buffer_internal (b=0x5555578f43d8) at ../../master/src/buffer.h:1184 #3 0x00005555556e6b21 in command_loop_1 () at ../../master/src/keyboard.c:1289 cmd = XIL(0x7fffffffde10) keybuf = {XIL(0), XIL(0x7ffff2c27c1d), XIL(0x555555765cd4), XIL(0x11cf6b0), XIL(0x7fffffffdd70), XIL(0x55555579e20b), XIL(0x11cf6b0), XIL(0x7ffff257e4c4), XIL(0x555559de7123), XIL(0x7ffff2c27c1d), XIL(0x7ffff2c27c1d), XIL(0x555559de7123), XIL(0x7ffff257e4c4), XIL(0x11cf6b0), XIL(0), XIL(0), XIL(0x555555cc5f80), XIL(0), XIL(0), XIL(0x7fffffffdd70), XIL(0x5555556e3c73), XIL(0xffffddc0), XIL(0x555555cc5f80), XIL(0), XIL(0), XIL(0x7fffffffdda0), XIL(0x555555797d03), make_fixnum(0), XIL(0x7fffffffdde0), XIL(0x55555579b3f4)} i = 1 prev_modiff = 0 prev_buffer = 0x0 already_adjusted = false #4 0x000055555579afef in internal_condition_case (bfun=0x5555556e690c , handlers=XIL(0x90), hfun=0x5555556e60a8 ) at ../../master/src/eval.c:1439 val = XIL(0x5555556e3c73) c = 0x555555dc13e0 #5 0x00005555556e65d4 in command_loop_2 (ignore=XIL(0)) at ../../master/src/keyboard.c:1094 val = make_fixnum(0) #6 0x000055555579a7fd in internal_catch (tag=XIL(0xd9e0), func=0x5555556e65a7 , arg=XIL(0)) at ../../master/src/eval.c:1189 val = XIL(0xd9e0) c = 0x555555daa710 #7 0x00005555556e6573 in command_loop () at ../../master/src/keyboard.c:1073 #8 0x00005555556e5c79 in recursive_edit_1 () at ../../master/src/keyboard.c:720 count = 1 val = XIL(0x7fffffffdf50) #9 0x00005555556e5dfc in Frecursive_edit () at ../../master/src/keyboard.c:789 count = 0 buffer = XIL(0) #10 0x00005555556e2829 in main (argc=2, argv=0x7fffffffe1b8) at ../../master/src/emacs.c:2050 stack_bottom_variable = 0x7ffff617e053 no_loadup = false junk = 0x0 dname_arg = 0x0 ch_to_dir = 0x0 original_pwd = 0x0 dump_mode = 0x0 skip_args = 1 temacs = 0x0 attempt_load_pdump = true rlim = { rlim_cur = 10022912, rlim_max = 18446744073709551615 } lc_all = 0x0 sockfd = -1 module_assertions = false --=-=-= Content-Type: text/plain -- Michael Welsh Duggan (mwd@cert.org) --=-=-=--