Package: emacs;
Reported by: Tassilo Horn <thorn <at> fastmail.fm>
Date: Tue, 6 Nov 2012 11:00:01 UTC
Severity: normal
Found in version 24.3.50
Done: Tassilo Horn <tsdh <at> gnu.org>
Bug is archived. No further changes may be made.
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bug-gnu-emacs <at> gnu.org
:bug#12814
; Package emacs
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(Tue, 06 Nov 2012 11:00:01 GMT) Full text and rfc822 format available.Tassilo Horn <thorn <at> fastmail.fm>
:bug-gnu-emacs <at> gnu.org
.
(Tue, 06 Nov 2012 11:00:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <thorn <at> fastmail.fm> To: bug-gnu-emacs <at> gnu.org Subject: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 11:56:15 +0100
[Message part 1 (text/plain, inline)]
Over the last days (I update my emacs copy daily), I had a few emacs crashes. I think, it always crashed when I hit M-DEL (or at least DEL), but not every such keystroke crashes emacs. Now I've run it in GDB. This is the backtrace:
[emacs_crash.txt (text/plain, inline)]
(gdb) c Continuing. Program received signal SIGSEGV, Segmentation fault. 0x0000000000544498 in event_to_kboard (event=0xbda9a0 <kbd_buffer+126272>) at keyboard.c:3421 warning: Source file is more recent than executable. 3421 if (WINDOWP (obj)) (gdb) bt full #0 0x0000000000544498 in event_to_kboard (event=0xbda9a0 <kbd_buffer+126272>) at keyboard.c:3421 obj = 8627717 #1 0x0000000000544fb1 in kbd_buffer_get_event (kbp=0x7ffffee30ce0, used_mouse_menu=0x7ffffee31297, end_time=0x0) at keyboard.c:3823 event = 0xbda9a0 <kbd_buffer+126272> obj = 0 #2 0x0000000000542b81 in read_char (commandflag=1, nmaps=8, maps=0x7ffffee31080, prev_event=12766914, used_mouse_menu=0x7ffffee31297, end_time=0x0) at keyboard.c:2768 kb = 0x100000004d62595 c = 12766914 jmpcount = 2 local_getcjmp = {{ __jmpbuf = {0, 8569071642456854240, 4290928, 140737469684688, 0, 0, 8569071643392184032, -8569074466754294048}, __mask_was_saved = 0, __saved_mask = { __val = {164568, 140737469681728, 6062330, 73344011, 9323869, 12766914, 4290928, 140737469681376, 6119764, 1, 12766914, 12807019, 114847494, 0, 12766866, 12766914} } }} ---Type <return> to continue, or q <return> to quit--- save_jump = {{ __jmpbuf = {0, 0, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 0, __saved_mask = { __val = {0 <repeats 16 times>} } }} tem = 81143184 save = 12769840 previous_echo_area_message = 12766914 also_record = 12766914 reread = false gcpro1 = { next = 0x4d62590, var = 0x6ab2848, nvars = 111880264 } gcpro2 = { next = 0x7ffffee30d20, var = 0x63eba3 <find_interval+117>, nvars = 111880264 } polling_stopped_here = true ---Type <return> to continue, or q <return> to quit--- orig_kboard = 0x3560410 #3 0x000000000054f630 in read_key_sequence (keybuf=0x7ffffee31510, bufsize=30, prompt=12766914, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true) at keyboard.c:9223 interrupted_kboard = 0x3560410 interrupted_frame = 0x1234170 key = 40 used_mouse_menu = false echo_local_start = 0 last_real_key_start = 0 keys_local_start = 0 local_first_binding = 0 from_string = 12766914 count = 2 t = 0 echo_start = 0 keys_start = 0 nmaps = 8 nmaps_allocated = 8 defs = 0x7ffffee31030 submaps = 0x7ffffee31080 orig_local_map = 87263254 orig_keymap = 12766914 ---Type <return> to continue, or q <return> to quit--- localized_local_map = 0 first_binding = 0 first_unbound = 31 mock_input = 0 fkey = { parent = 19820790, map = 19820790, start = 0, end = 0 } keytran = { parent = 12746166, map = 12746166, start = 0, end = 0 } indec = { parent = 19820774, map = 19820774, start = 0, end = 0 } shift_translated = false ---Type <return> to continue, or q <return> to quit--- delayed_switch_frame = 12766914 original_uppercase = 81143184 original_uppercase_position = -1 dummyflag = false starting_buffer = 0x4d62590 fake_prefixed_keys = 12766914 gcpro1 = { next = 0x7ffffee312c0, var = 0x4d62595, nvars = 12953202 } #4 0x0000000000540108 in command_loop_1 () at keyboard.c:1458 cmd = 12807106 keybuf = {428, 244, 388, 140737469683232, 12766962, 114799014, 3929895075855, 55175360, 54900128, 744, 140737469683072, 9345238, 12818658, 19087728, 140737469683120, 5167821, 12600816, 6973741, 140737469682672, 12766914, 12766914, 9345249, 140737469683200, 5503309, 140737469683232, 114799014, 12766914, 19087728, 140737469683200, 0} i = 1 prev_modiff = 41158 prev_buffer = 0x4d62590 already_adjusted = false ---Type <return> to continue, or q <return> to quit--- #5 0x00000000005d7aef in internal_condition_case ( bfun=0x53fd21 <command_loop_1>, handlers=12818562, hfun=0x53f622 <cmd_error>) at eval.c:1288 val = 1 c = { tag = 12766914, val = 12766914, next = 0x7ffffee31850, gcpro = 0x0, jmp = {{ __jmpbuf = {0, 8569071642469437152, 4290928, 140737469684688, 0, 0, 8569071642509283040, -8569074387562295584}, __mask_was_saved = 0, __saved_mask = { __val = {9877669686147256032, 0, 140010314009472, 4294967295, 0, 9290408, 0, 0, 0, 0, 140010410170884, 1, 0, 1, 140010310150768, 0} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, ---Type <return> to continue, or q <return> to quit--- poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } h = { handler = 12818562, var = 12766914, chosen_clause = 12766962, tag = 0x7ffffee316d0, next = 0x0 } #6 0x000000000053fa3a in command_loop_2 (ignore=12766914) at keyboard.c:1167 val = 0 #7 0x00000000005d74c3 in internal_catch (tag=12814402, func=0x53fa14 <command_loop_2>, arg=12766914) at eval.c:1059 c = { tag = 12814402, val = 12766914, next = 0x0, gcpro = 0x0, jmp = {{ __jmpbuf = {0, 8569071642687540960, 4290928, 140737469684688, 0, 0, 8569071642729484000, -8569074387637268768}, ---Type <return> to continue, or q <return> to quit--- __mask_was_saved = 0, __saved_mask = { __val = {0, 0, 144, 0, 0, 140737469684048, 6028825, 4294967296, 12766914, 12766914, 12988610, 140737469684144, 0, 12218656, 12793680, 352} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } #8 0x000000000053f9ec in command_loop () at keyboard.c:1146 No locals. #9 0x000000000053f16f in recursive_edit_1 () at keyboard.c:778 count = 1 val = 12766914 #10 0x000000000053f315 in Frecursive_edit () at keyboard.c:842 count = 0 buffer = 12766914 ---Type <return> to continue, or q <return> to quit--- #11 0x000000000053d258 in main (argc=1, argv=0x7ffffee31bd8) at emacs.c:1564 dummy = 4247287 stack_bottom_variable = 0 '\000' do_initial_setlocale = true dumping = false skip_args = 0 rlim = { rlim_cur = 8720000, rlim_max = 18446744073709551615 } no_loadup = false junk = 0x0 dname_arg = 0x0 ch_to_dir = 0x13c7f10 "\360%9\001" (gdb) (gdb) xbacktrace (gdb) (gdb)
[Message part 3 (text/plain, inline)]
In GNU Emacs 24.3.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.4.4) of 2012-11-06 on thinkpad Bzr revision: dmantipov <at> yandex.ru-20121106062720-a8n1hv70pyrqscta Windowing system distributor `The X.Org Foundation', version 11.0.11300000 System Description: NAME=Gentoo Configured using: `configure '--prefix=/usr' '--build=x86_64-pc-linux-gnu' '--host=x86_64-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--libdir=/usr/lib64' '--disable-dependency-tracking' '--program-suffix=-emacs-24-vcs' '--program-transform-name=s/emacs-[0-9].*/emacs-24-vcs/' '--infodir=/usr/share/info/emacs-24-vcs' '--enable-locallisppath=/etc/emacs:/usr/share/emacs/site-lisp' '--with-crt-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/../../../../lib64' '--with-gameuser=games' '--without-compress-info' '--without-hesiod' '--without-kerberos' '--without-kerberos5' '--with-gpm' '--with-dbus' '--with-gnutls' '--with-xml2' '--without-selinux' '--without-wide-int' '--with-sound' '--with-x' '--without-ns' '--without-gconf' '--with-gsettings' '--with-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--with-imagemagick' '--with-xft' '--with-libotf' '--with-m17n-flt' '--with-x-toolkit=gtk3' 'GENTOO_PACKAGE=app-editors/emacs-vcs-24.3.9999' 'EBZR_BRANCH=trunk' 'EBZR_REVNO=110810' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 'CFLAGS=-march=native -pipe -g -ggdb' 'LDFLAGS=-Wl,-O1 -Wl,--as-needed' 'CPPFLAGS='' Important settings: value of $LC_COLLATE: C value of $LC_MONETARY: de_DE.utf8 value of $LC_NUMERIC: de_DE.utf8 value of $LC_TIME: de_DE.utf8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Group Minor modes in effect: gnus-topic-mode: t shell-dirtrack-mode: t helm-match-plugin-mode: t hl-line-mode: t gnus-undo-mode: t global-edit-server-edit-mode: t recentf-mode: t global-subword-mode: t subword-mode: t savehist-mode: t show-paren-mode: t window-number-meta-mode: t global-yascroll-bar-mode: t yascroll-bar-mode: t tooltip-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t buffer-read-only: t column-number-mode: t line-number-mode: t transient-mark-mode: t Recent input: <down-mouse-1> <mouse-1> M-x g n u s <return> <help-echo> C-x C-f e m <return> M-< <down> <down> <down> <up> <up> <up> <up> <up> <down> <down> <down> <down> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <left> <down> <down> <down> <down> <down> <right> <right> <right> <right> C-SPC <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> M-w C-< M-x r e p o <tab> r t <tab> <return> Recent messages: 20121106T115122.602> Reading active file from archive via nnml... 20121106T115122.602> Reading active file from archive via nnml...done 20121106T115122.603> Reading active file via nndraft... 20121106T115122.609> Reading active file via nndraft... 20121106T115122.609> Reading active file via nndraft...done 20121106T115122.612> Checking new news...done Mark set byte-code: Beginning of buffer [2 times] Mark set Making completion list... 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/usr/share/emacs/24.3.50/lisp/calendar/time-date ~/Repos/el/gnus/lisp/parse-time hides /usr/share/emacs/24.3.50/lisp/calendar/parse-time Features: (shadow sort gnus-cite emacsbug sendmail nndraft nnmh rot13 utf-7 gnutls network-stream starttls nnimap parse-time tls utf7 netrc nnml nnnil gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-cache gnus-demon nntp spam spam-stat gnus-uu yenc gnus-msg gnus-gravatar mail-extr gravatar gnus-topic nnir gnus-registry registry eieio-base th-private helm-misc helm-files image-dired tramp tramp-compat tramp-loaddefs shell dired-aux ffap helm-tags helm-bookmark helm-adaptative helm-info helm-net browse-url helm-plugin helm-locate helm-help helm-match-plugin helm-external eldoc go-mode-load greql-mode tg-mode generic preview-latex tex-site auto-loads paredit epa-file epa google-translate ido rdictcc appt vc-git hl-line org-mobile org-capture org-mks org-irc org-info org-gnus org-docview org-bibtex bibtex org-protocol org-attach org-id org-icalendar org-exp ob-exp org-habit calfw-ical icalendar calfw-org org-agenda calfw holidays hol-loaddefs diary-lib diary-loaddefs org ob-tangle ob-ref ob-lob ob-table org-footnote org-src ob-comint ob-keys org-pcomplete pcomplete org-list org-faces org-entities org-version ob-emacs-lisp ob org-compat org-macs ob-eval org-loaddefs find-func cal-menu calendar cal-loaddefs google-contacts-message google-contacts-gnus gnus-art mm-uu mml2015 mm-view mml-smime smime dig gnus-sum nnoo gnus-group gnus-undo nnmail mail-source gnus-start gnus-spec gnus-int gnus-range gnus-win gnus gnus-ems gnus-compat nnheader google-contacts xml oauth2 json plstore epg epg-config url-cache url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf mailcap url-util url-parse auth-source gnus-util password-cache url-vars google-oauth dired-x highlight-symbol hi-lock thingatpt boxquote rect ecomplete message idna format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mailabbrev mail-utils gmm-utils mailheader info edit-server server yasnippet dropdown-list derived help-mode disp-table noutline outline browse-kill-ring recentf tree-widget wid-edit helm-buffers helm-grep helm-regexp grep helm-elscreen helm-utils compile comint ansi-color ring helm helm-config easymenu uniquify easy-mmode iedit help-macro iedit-lib cl-macs gv subword saveplace savehist highlight-parentheses paren lusty-explorer dired warnings advice help-fns advice-preload rx window-number cl cl-lib yascroll edmacro kmacro gnus-load adaptive-wrap-autoloads boxquote-autoloads browse-kill-ring-autoloads clojure-mode-autoloads debbugs-autoloads full-ack-autoloads gist-autoloads gh-autoloads eieio byte-opt bytecomp byte-compile cconv git-commit-autoloads graphviz-dot-mode-autoloads highlight-parentheses-autoloads highlight-symbol-autoloads logito-autoloads markdown-mode-autoloads oauth2-autoloads paredit-autoloads pastebin-autoloads pcache-autoloads finder-inf window-number-autoloads yascroll-autoloads package site-gentoo time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)
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(Tue, 06 Nov 2012 15:17:01 GMT) Full text and rfc822 format available.Message #8 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 16:13:08 +0100
[Message part 1 (text/plain, inline)]
Tassilo Horn <thorn <at> fastmail.fm> writes: > Over the last days (I update my emacs copy daily), I had a few emacs > crashes. I think, it always crashed when I hit M-DEL (or at least > DEL), but not every such keystroke crashes emacs. The crash occured again. This time, I think it was during "normal" typing, i.e., no DEL. The (almost identical) backtrace is attached.
[emacs_crash2.txt (text/plain, inline)]
Program received signal SIGSEGV, Segmentation fault. 0x0000000000544498 in event_to_kboard (event=0xbe9ee0 <kbd_buffer+189056>) at keyboard.c:3421 warning: Source file is more recent than executable. 3421 if (WINDOWP (obj)) (gdb) bt full #0 0x0000000000544498 in event_to_kboard (event=0xbe9ee0 <kbd_buffer+189056>) at keyboard.c:3421 obj = 23475429 #1 0x0000000000544fb1 in kbd_buffer_get_event (kbp=0x7ffffb338fa0, used_mouse_menu=0x7ffffb339577, end_time=0x0) at keyboard.c:3823 event = 0xbe9ee0 <kbd_buffer+189056> obj = 432488194 #2 0x0000000000542b81 in read_char (commandflag=1, nmaps=9, maps=0x7ffffb339350, prev_event=12766914, used_mouse_menu=0x7ffffb339577, end_time=0x0) at keyboard.c:2768 kb = 0x7ffffb338fd0 c = 12766914 jmpcount = 2 local_getcjmp = {{ __jmpbuf = {0, -1730894225911923910, 4290928, 140737407852208, 0, 0, -1730894225194697926, 1730884259209591610}, __mask_was_saved = 0, __saved_mask = { __val = {6569541, 12766914, 127802357, 12799762, 4248, 140737407849248, 6062330, 12766914, 33490614, 12766914, 33602934, 140737407848896, 6119764, 0, 12766914, 127802352} } }} save_jump = {{ __jmpbuf = {0, 0, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 0, __saved_mask = { __val = {0 <repeats 16 times>} ---Type <return> to continue, or q <return> to quit--- } }} tem = 33984598 save = 140737407849136 previous_echo_area_message = 12766914 also_record = 12766914 reread = false gcpro1 = { next = 0x7ffffb339000, var = 0x63eba3 <find_interval+117>, nvars = 95637904 } gcpro2 = { next = 0x7ffffb339490, var = 0x5b35190, nvars = 72057594037927939 } polling_stopped_here = true orig_kboard = 0x1b72860 #3 0x000000000054f630 in read_key_sequence (keybuf=0x7ffffb3397f0, bufsize=30, prompt=12766914, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true) at keyboard.c:9223 interrupted_kboard = 0x1b72860 interrupted_frame = 0x1234170 key = 40 used_mouse_menu = false echo_local_start = 0 last_real_key_start = 0 ---Type <return> to continue, or q <return> to quit--- keys_local_start = 0 local_first_binding = 0 from_string = 12766914 count = 2 t = 0 echo_start = 0 keys_start = 0 nmaps = 9 nmaps_allocated = 9 defs = 0x7ffffb3392f0 submaps = 0x7ffffb339350 orig_local_map = 35189862 orig_keymap = 12766914 localized_local_map = 0 first_binding = 0 first_unbound = 31 mock_input = 0 fkey = { parent = 19820790, map = 19820790, start = 0, end = 0 } keytran = { parent = 12746166, map = 12746166, start = 0, end = 0 ---Type <return> to continue, or q <return> to quit--- } indec = { parent = 19820774, map = 19820774, start = 0, end = 0 } shift_translated = false delayed_switch_frame = 12766914 original_uppercase = 127802352 original_uppercase_position = -1 dummyflag = false starting_buffer = 0x79e1bf0 fake_prefixed_keys = 12766914 gcpro1 = { next = 0x0, var = 0x79e1bf5, nvars = 12953202 } #4 0x0000000000540108 in command_loop_1 () at keyboard.c:1458 cmd = 16198018 keybuf = {508, 428, 108, 140737407850752, 12766962, 92661894, 4316442132495, 27990208, 27714976, 728, 140737407850592, 9345238, 12818658, 19087728, 140737407850640, 5167821, 1, 6973741, 140737407850192, 12766914, 12766914, 9345249, 140737407850720, 5503309, 140737407850752, 92661894, 12766914, 19087728, 140737407850720, 0} i = 1 prev_modiff = 2493 ---Type <return> to continue, or q <return> to quit--- prev_buffer = 0x79e1bf0 already_adjusted = false #5 0x00000000005d7aef in internal_condition_case (bfun=0x53fd21 <command_loop_1>, handlers=12818562, hfun=0x53f622 <cmd_error>) at eval.c:1288 val = 1 c = { tag = 12766914, val = 12766914, next = 0x7ffffb339b30, gcpro = 0x0, jmp = {{ __jmpbuf = {0, -1730894225643488454, 4290928, 140737407852208, 0, 0, -1730894225523950790, 1730884200964209466}, __mask_was_saved = 0, __saved_mask = { __val = {1730884200964209466, 0, 139913602980736, 4294967295, 0, 9290408, 0, 0, 0, 0, 139913699142148, 1, 0, 1, 139913599122032, 0} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } h = { ---Type <return> to continue, or q <return> to quit--- handler = 12818562, var = 12766914, chosen_clause = 12766962, tag = 0x7ffffb3399b0, next = 0x0 } #6 0x000000000053fa3a in command_loop_2 (ignore=12766914) at keyboard.c:1167 val = 0 #7 0x00000000005d74c3 in internal_catch (tag=12814402, func=0x53fa14 <command_loop_2>, arg=12766914) at eval.c:1059 c = { tag = 12814402, val = 12766914, next = 0x0, gcpro = 0x0, jmp = {{ __jmpbuf = {0, -1730894225693820102, 4290928, 140737407852208, 0, 0, -1730894225601545414, 1730884200602975034}, __mask_was_saved = 0, __saved_mask = { __val = {0, 0, 144, 0, 0, 140737407851568, 6028825, 4294967296, 12766914, 12766914, 12988610, 140737407851664, 0, 12218656, 12793680, 352} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, ---Type <return> to continue, or q <return> to quit--- pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } #8 0x000000000053f9ec in command_loop () at keyboard.c:1146 No locals. #9 0x000000000053f16f in recursive_edit_1 () at keyboard.c:778 count = 1 val = 12766914 #10 0x000000000053f315 in Frecursive_edit () at keyboard.c:842 count = 0 buffer = 12766914 #11 0x000000000053d258 in main (argc=1, argv=0x7ffffb339eb8) at emacs.c:1564 dummy = 4247287 stack_bottom_variable = 0 '\000' do_initial_setlocale = true dumping = false skip_args = 0 rlim = { rlim_cur = 8720000, rlim_max = 18446744073709551615 } no_loadup = false junk = 0x0 dname_arg = 0x0 ch_to_dir = 0x13c7f10 "\360%9\001" (gdb) (gdb) xbacktrace (gdb)
[Message part 3 (text/plain, inline)]
Bye, Tassilo
bug-gnu-emacs <at> gnu.org
:bug#12814
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(Tue, 06 Nov 2012 16:20:02 GMT) Full text and rfc822 format available.Message #11 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 18:16:33 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Date: Tue, 06 Nov 2012 16:13:08 +0100 > > The crash occured again. This time, I think it was during "normal" > typing, i.e., no DEL. The (almost identical) backtrace is attached. > > > [2:text/plain Hide] > > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000544498 in event_to_kboard (event=0xbe9ee0 <kbd_buffer+189056>) > at keyboard.c:3421 > warning: Source file is more recent than executable. Given these repeated warnings, I'm not sure your backtrace is reliable enough to be used for looking into the problem. Please consider rebuilding Emacs. > 3421 if (WINDOWP (obj)) What is 'obj' here? Why does it cause a segfault?
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:bug#12814
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(Tue, 06 Nov 2012 18:15:02 GMT) Full text and rfc822 format available.Message #14 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 19:11:27 +0100
Eli Zaretskii <eliz <at> gnu.org> writes: Hi Eli, >> The crash occured again. This time, I think it was during "normal" >> typing, i.e., no DEL. The (almost identical) backtrace is attached. >> >> Program received signal SIGSEGV, Segmentation fault. >> 0x0000000000544498 in event_to_kboard (event=0xbe9ee0 <kbd_buffer+189056>) >> at keyboard.c:3421 >> warning: Source file is more recent than executable. > > Given these repeated warnings, I'm not sure your backtrace is reliable > enough to be used for looking into the problem. Please consider > rebuilding Emacs. I had 2 other crashes with a rebuilt emacs, but they are completely identical with respect to frames and line numbers. >> 3421 if (WINDOWP (obj)) > > What is 'obj' here? Why does it cause a segfault? I'll tell you the next time the crash occurs. Shouldn't take too long. Bye, Tassilo
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:bug#12814
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(Tue, 06 Nov 2012 18:32:01 GMT) Full text and rfc822 format available.Message #17 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 19:27:46 +0100
Tassilo Horn <tsdh <at> gnu.org> writes: >>> 3421 if (WINDOWP (obj)) >> >> What is 'obj' here? Why does it cause a segfault? > > I'll tell you the next time the crash occurs. Shouldn't take too > long. Um, it's an integer (which is also visible in the other backtraces). Program received signal SIGSEGV, Segmentation fault. 0x0000000000543714 in event_to_kboard (event=0xbd2ba0 <kbd_buffer+98112>) at keyboard.c:3421 3421 if (WINDOWP (obj)) (gdb) p obj $1 = 1666821 Bye, Tassilo
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:bug#12814
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(Tue, 06 Nov 2012 19:13:02 GMT) Full text and rfc822 format available.Message #20 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 21:08:55 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Cc: 12814 <at> debbugs.gnu.org > Date: Tue, 06 Nov 2012 19:27:46 +0100 > > Tassilo Horn <tsdh <at> gnu.org> writes: > > >>> 3421 if (WINDOWP (obj)) > >> > >> What is 'obj' here? Why does it cause a segfault? > > > > I'll tell you the next time the crash occurs. Shouldn't take too > > long. > > Um, it's an integer (which is also visible in the other backtraces). > > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000543714 in event_to_kboard (event=0xbd2ba0 <kbd_buffer+98112>) > at keyboard.c:3421 > 3421 if (WINDOWP (obj)) > (gdb) p obj > $1 = 1666821 All Lisp objects look like integers, but aren't. What does "xtype" say about it? Like this: (gdb) p obj (gdb) xtype
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(Tue, 06 Nov 2012 20:05:02 GMT) Full text and rfc822 format available.Message #23 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 21:01:26 +0100
Eli Zaretskii <eliz <at> gnu.org> writes: >> Um, it's an integer (which is also visible in the other backtraces). >> >> Program received signal SIGSEGV, Segmentation fault. >> 0x0000000000543714 in event_to_kboard (event=0xbd2ba0 <kbd_buffer+98112>) >> at keyboard.c:3421 >> 3421 if (WINDOWP (obj)) >> (gdb) p obj >> $1 = 1666821 > > All Lisp objects look like integers, but aren't. What does "xtype" > say about it? Like this: > > (gdb) p obj > (gdb) xtype Program received signal SIGSEGV, Segmentation fault. 0x0000000000543714 in event_to_kboard (event=0xbe01e0 <kbd_buffer+152960>) at keyboard.c:3421 3421 if (WINDOWP (obj)) (gdb) p obj $1 = 7816245 (gdb) xtype No symbol "GCTYPEBITS" in current context. Bye, Tassilo
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(Tue, 06 Nov 2012 20:26:02 GMT) Full text and rfc822 format available.Message #26 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org>, Paul Eggert <eggert <at> cs.ucla.edu> Cc: 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 22:21:58 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Cc: 12814 <at> debbugs.gnu.org > Date: Tue, 06 Nov 2012 21:01:26 +0100 > > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000543714 in event_to_kboard (event=0xbe01e0 <kbd_buffer+152960>) > at keyboard.c:3421 > 3421 if (WINDOWP (obj)) > (gdb) p obj > $1 = 7816245 > (gdb) xtype > No symbol "GCTYPEBITS" in current context. Ugh! Paul, this is because of your changes in revision 110783. Could you please fix that? Debugging Emacs with "xtype" is no fun. In the meantime, Tassilo, you can change xgettype on src/.gdbinit to use 3 instead of GCTYPEBITS, then the xtype command should work again.
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(Tue, 06 Nov 2012 20:54:02 GMT) Full text and rfc822 format available.Message #29 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Paul Eggert <eggert <at> cs.ucla.edu> To: Eli Zaretskii <eliz <at> gnu.org> Cc: 12814 <at> debbugs.gnu.org, Tassilo Horn <tsdh <at> gnu.org> Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 12:50:22 -0800
On 11/06/2012 12:21 PM, Eli Zaretskii wrote: > Ugh! Paul, this is because of your changes in revision 110783. Could > you please fix that? Debugging Emacs with "xtype" is no fun. Sorry about that. I installed what should be a fix, in trunk bzr 110820. Tasillo, is there some reason you're building with -g rather than -g3? The latter is nicer for debugging, independently of this fix.
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(Tue, 06 Nov 2012 20:58:01 GMT) Full text and rfc822 format available.Message #32 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Paul Eggert <eggert <at> cs.ucla.edu> Cc: Eli Zaretskii <eliz <at> gnu.org>, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 21:54:20 +0100
Paul Eggert <eggert <at> cs.ucla.edu> writes: >> Ugh! Paul, this is because of your changes in revision 110783. >> Could you please fix that? Debugging Emacs with "xtype" is no fun. > > Sorry about that. I installed what should be a fix, in trunk bzr 110820. Ok, I'll upgrade and report back if the crashes have vanished. > Tasillo, is there some reason you're building with -g rather than -g3? > The latter is nicer for debugging, independently of this fix. No, no particular reason. I'll use -g3 from now on. Bye, Tassilo
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(Tue, 06 Nov 2012 21:08:01 GMT) Full text and rfc822 format available.Message #35 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Paul Eggert <eggert <at> cs.ucla.edu> To: Tassilo Horn <tsdh <at> gnu.org> Cc: Eli Zaretskii <eliz <at> gnu.org>, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 13:04:16 -0800
On 11/06/2012 12:54 PM, Tassilo Horn wrote: >> Sorry about that. I installed what should be a fix, in trunk bzr 110820. > Ok, I'll upgrade and report back if the crashes have vanished. Sorry, I should have been clearer. My fix was to make GDB work better for you; it shouldn't affect the actual crashes. Good luck anyway.
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(Tue, 06 Nov 2012 21:24:02 GMT) Full text and rfc822 format available.Message #38 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Paul Eggert <eggert <at> cs.ucla.edu> Cc: Eli Zaretskii <eliz <at> gnu.org>, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 22:20:18 +0100
Paul Eggert <eggert <at> cs.ucla.edu> writes: >>> Sorry about that. I installed what should be a fix, in trunk bzr 110820. >> Ok, I'll upgrade and report back if the crashes have vanished. > > Sorry, I should have been clearer. My fix was to make > GDB work better for you; it shouldn't affect the actual > crashes. Good luck anyway. Yep. Shortly after I sent the message, I've read your commit message which made it clear that it's actually the xtype stuff that has been fixed, not the crash itself. Unfortunately, when you want to provoke the crash, you are not able to, so no new information today. But I'm sure, tomorrow when I'm writing a super-important, urgent long mail, it'll crash again. (Luckily, Gnus auto-saves drafts quite frequently so you don't loose too much.) Bye, Tassilo
bug-gnu-emacs <at> gnu.org
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(Tue, 06 Nov 2012 21:31:01 GMT) Full text and rfc822 format available.Message #41 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Paul Eggert <eggert <at> cs.ucla.edu> Cc: 12814 <at> debbugs.gnu.org, tsdh <at> gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 23:27:02 +0200
> Date: Tue, 06 Nov 2012 12:50:22 -0800 > From: Paul Eggert <eggert <at> cs.ucla.edu> > CC: Tassilo Horn <tsdh <at> gnu.org>, 12814 <at> debbugs.gnu.org > > On 11/06/2012 12:21 PM, Eli Zaretskii wrote: > > > Ugh! Paul, this is because of your changes in revision 110783. Could > > you please fix that? Debugging Emacs with "xtype" is no fun. > > Sorry about that. I installed what should be a fix, in trunk bzr 110820. Thanks. > Tasillo, is there some reason you're building with -g rather than -g3? I had the same problem, although I do use -g3. Probably because of my old version of GCC. So I think we should leave the enum for now.
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(Tue, 06 Nov 2012 21:33:01 GMT) Full text and rfc822 format available.Message #44 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Tue, 06 Nov 2012 23:29:24 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Cc: Eli Zaretskii <eliz <at> gnu.org>, 12814 <at> debbugs.gnu.org > Date: Tue, 06 Nov 2012 21:54:20 +0100 > > Paul Eggert <eggert <at> cs.ucla.edu> writes: > > >> Ugh! Paul, this is because of your changes in revision 110783. > >> Could you please fix that? Debugging Emacs with "xtype" is no fun. > > > > Sorry about that. I installed what should be a fix, in trunk bzr 110820. > > Ok, I'll upgrade and report back if the crashes have vanished. They haven't, but now you should be able to use xtype to see what kind of object is obj that cases the crash.
bug-gnu-emacs <at> gnu.org
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(Wed, 07 Nov 2012 11:40:02 GMT) Full text and rfc822 format available.Message #47 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Wed, 07 Nov 2012 12:39:01 +0100
[Message part 1 (text/plain, inline)]
Eli Zaretskii <eliz <at> gnu.org> writes: > They haven't, but now you should be able to use xtype to see what kind > of object is obj that cases the crash. Ok. It took much longer for the crash to occur, but now xtype worked (complete backtrace attached). Program received signal SIGSEGV, Segmentation fault. 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) at keyboard.c:3421 3421 if (WINDOWP (obj)) (gdb) p obj $1 = 7652357 (gdb) xtype Lisp_Vectorlike Cannot access memory at address 0x74c400 Bye, Tassilo
[emacs_crash.txt (text/plain, inline)]
Program received signal SIGSEGV, Segmentation fault. 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) at keyboard.c:3421 3421 if (WINDOWP (obj)) (gdb) p obj $1 = 7652357 (gdb) xtype Lisp_Vectorlike Cannot access memory at address 0x74c400 (gdb) bt full #0 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) at keyboard.c:3421 obj = 7652357 #1 0x00000000005442bd in kbd_buffer_get_event (kbp=0x7fff3d71dd20, used_mouse_menu=0x7fff3d71e2d7, end_time=0x0) at keyboard.c:3823 event = 0xbc0660 <kbd_buffer+18944> obj = 357921035 #2 0x0000000000541e8d in read_char (commandflag=1, nmaps=8, maps=0x7fff3d71e0c0, prev_event=12766914, used_mouse_menu=0x7fff3d71e2d7, end_time=0x0) at keyboard.c:2768 kb = 0x10000000532ead5 c = 12766914 jmpcount = 2 local_getcjmp = {{ __jmpbuf = {0, 2550837358400367020, 4290928, 140734224264208, 0, 0, 2550837360409438636, -2551254709291062868}, __mask_was_saved = 0, __saved_mask = { __val = {190348, 140734224261248, 6058850, 57672011, 9323869, 12766914, 4290928, 140734224260896, 6116284, 1, 12766914, 12807021, 100865958, 0, 12766866, 12766914} } }} ---Type <return> to continue, or q <return> to quit--- save_jump = {{ __jmpbuf = {0, 0, 0, 0, 0, 0, 0, 0}, __mask_was_saved = 0, __saved_mask = { __val = {0 <repeats 16 times>} } }} tem = 87222992 save = 12769840 previous_echo_area_message = 12766914 also_record = 12766914 reread = false gcpro1 = { next = 0x532ead0, var = 0x33e7ec0, nvars = 54427328 } gcpro2 = { next = 0x7fff3d71dd60, var = 0x63dbd7 <find_interval+117>, nvars = 54427328 } polling_stopped_here = true ---Type <return> to continue, or q <return> to quit--- orig_kboard = 0x27a50c0 #3 0x000000000054e93c in read_key_sequence (keybuf=0x7fff3d71e550, bufsize=30, prompt=12766914, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true) at keyboard.c:9223 interrupted_kboard = 0x27a50c0 interrupted_frame = 0x122bd10 key = 40 used_mouse_menu = false echo_local_start = 0 last_real_key_start = 0 keys_local_start = 0 local_first_binding = 0 from_string = 12766914 count = 2 t = 0 echo_start = 0 keys_start = 0 nmaps = 8 nmaps_allocated = 8 defs = 0x7fff3d71e070 submaps = 0x7fff3d71e0c0 orig_local_map = 74940486 orig_keymap = 12766914 ---Type <return> to continue, or q <return> to quit--- localized_local_map = 0 first_binding = 0 first_unbound = 31 mock_input = 0 fkey = { parent = 19811574, map = 19811574, start = 0, end = 0 } keytran = { parent = 12746166, map = 12746166, start = 0, end = 0 } indec = { parent = 19811558, map = 19811558, start = 0, end = 0 } shift_translated = false ---Type <return> to continue, or q <return> to quit--- delayed_switch_frame = 12766914 original_uppercase = 87222992 original_uppercase_position = -1 dummyflag = false starting_buffer = 0x532ead0 fake_prefixed_keys = 12766914 gcpro1 = { next = 0x7fff3d71e300, var = 0x532ead5, nvars = 12953202 } #4 0x000000000053f414 in command_loop_1 () at keyboard.c:1458 cmd = 12807106 keybuf = {436, 12, 12766914, 140734224262752, 12766962, 99474918, 3994319585295, 40855936, 40580512, 800, 140734224262592, 9345238, 12818658, 19053840, 140734224262640, 5165477, 9374113, 6970589, 140734224262192, 12766914, 12766914, 9345249, 140734224262720, 5499993, 140734224262752, 99474918, 12766914, 19053840, 140734224262720, 0} i = 1 prev_modiff = 49690 prev_buffer = 0x532ead0 already_adjusted = false ---Type <return> to continue, or q <return> to quit--- #5 0x00000000005d6d57 in internal_condition_case ( bfun=0x53f02d <command_loop_1>, handlers=12818562, hfun=0x53e92e <cmd_error>) at eval.c:1288 val = 1 c = { tag = 12766914, val = 12766914, next = 0x7fff3d71e890, gcpro = 0x0, jmp = {{ __jmpbuf = {0, 2550837358681385388, 4290928, 140734224264208, 0, 0, 2550837358582819244, -2551254790071916116}, __mask_was_saved = 0, __saved_mask = { __val = {15895489283637635500, 0, 140223433214848, 4294967295, 0, 9290408, 0, 0, 0, 0, 140223529376260, 1, 0, 1, 140223429356144, 0} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, ---Type <return> to continue, or q <return> to quit--- poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } h = { handler = 12818562, var = 12766914, chosen_clause = 12766962, tag = 0x7fff3d71e710, next = 0x0 } #6 0x000000000053ed46 in command_loop_2 (ignore=12766914) at keyboard.c:1167 val = 0 #7 0x00000000005d672b in internal_catch (tag=12814402, func=0x53ed20 <command_loop_2>, arg=12766914) at eval.c:1059 c = { tag = 12814402, val = 12766914, next = 0x0, gcpro = 0x0, jmp = {{ __jmpbuf = {0, 2550837358631053740, 4290928, 140734224264208, 0, 0, 2550837358672996780, -2551254790282155604}, ---Type <return> to continue, or q <return> to quit--- __mask_was_saved = 0, __saved_mask = { __val = {0, 0, 144, 0, 0, 140734224263568, 6025345, 4294967296, 12766914, 12766914, 12988610, 140734224263664, 0, 12218656, 12793680, 352} } }}, backlist = 0x0, handlerlist = 0x0, lisp_eval_depth = 0, pdlcount = 2, poll_suppress_count = 1, interrupt_input_blocked = 0, byte_stack = 0x0 } #8 0x000000000053ecf8 in command_loop () at keyboard.c:1146 No locals. #9 0x000000000053e47b in recursive_edit_1 () at keyboard.c:778 count = 1 val = 12766914 #10 0x000000000053e621 in Frecursive_edit () at keyboard.c:842 count = 0 buffer = 12766914 ---Type <return> to continue, or q <return> to quit--- #11 0x000000000053c564 in main (argc=1, argv=0x7fff3d71ec18) at emacs.c:1564 dummy = 4247287 stack_bottom_variable = 0 '\000' do_initial_setlocale = true dumping = false skip_args = 0 rlim = { rlim_cur = 8720000, rlim_max = 18446744073709551615 } no_loadup = false junk = 0x0 dname_arg = 0x0 ch_to_dir = 0x13ad000 "<\001" (gdb) (gdb) xbacktrace (gdb)
bug-gnu-emacs <at> gnu.org
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(Wed, 07 Nov 2012 17:19:01 GMT) Full text and rfc822 format available.Message #50 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Wed, 07 Nov 2012 19:17:31 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org > Date: Wed, 07 Nov 2012 12:39:01 +0100 > > Program received signal SIGSEGV, Segmentation fault. > 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) > at keyboard.c:3421 > 3421 if (WINDOWP (obj)) > (gdb) p obj > $1 = 7652357 > (gdb) xtype > Lisp_Vectorlike > Cannot access memory at address 0x74c400 Hmm... probably a window or frame that were deleted and recycled. > Program received signal SIGSEGV, Segmentation fault. > 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) > at keyboard.c:3421 > 3421 if (WINDOWP (obj)) > (gdb) p obj > $1 = 7652357 > (gdb) xtype > Lisp_Vectorlike > Cannot access memory at address 0x74c400 > (gdb) bt full > #0 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) > at keyboard.c:3421 > obj = 7652357 So what kind of event is this? Try these commands: (gdb) p *event (gdb) p event->arg (gdb) xtype The last command will probably say it's a cons cell, in which case you can use the "xcar" and "xcdr" commands to show the contents. For each component, type "xtype" followed by the command suitable for the type that is shown: "xstring" for a string, "xsymbol" for a symbol, etc. (Usually, just "pp event->arg" would display the whole thing, but it is dangerous to use that command in a crashed session, you could screw up the entire debugging session.) Thanks.
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(Wed, 07 Nov 2012 18:46:02 GMT) Full text and rfc822 format available.Message #53 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Wed, 07 Nov 2012 19:45:21 +0100
Eli Zaretskii <eliz <at> gnu.org> writes: Hi Eli, the next crash occured. This time not while typing but while scrolling (<down>) in an info buffer. >> (gdb) bt full >> #0 0x00000000005437a4 in event_to_kboard (event=0xbc0660 <kbd_buffer+18944>) >> at keyboard.c:3421 >> obj = 7652357 > > So what kind of event is this? Try these commands: --8<---------------cut here---------------start------------->8--- Program received signal SIGSEGV, Segmentation fault. 0x00000000005437a4 in event_to_kboard (event=0xbd2ca0 <kbd_buffer+94272>) at keyboard.c:3421 3421 if (WINDOWP (obj)) (gdb) p obj $1 = 2922261 (gdb) xtype Lisp_Vectorlike Cannot access memory at address 0x2c9710 (gdb) xvector $2 = (struct Lisp_Vector *) 0x2c9710 Cannot access memory at address 0x2c9710 (gdb) p *event $3 = { kind = SELECTION_REQUEST_EVENT, code = 54395952, part = 23068704, modifiers = 0, x = 400, y = 322, timestamp = 356, frame_or_window = 2922261, arg = 12766914 } (gdb) p event->arg $4 = 12766914 (gdb) xtype Lisp_Symbol (gdb) xsymbol $5 = (struct Lisp_Symbol *) 0xc2cec0 "nil" (gdb) p event->code $6 = 54395952 (gdb) xtype Lisp_Int0 (gdb) xint $7 = 13598988 (gdb) p event->part $8 = 23068704 (gdb) xtype Lisp_Int0 (gdb) xint $9 = 5767176 (gdb) p event->frame_or_window $10 = 2922261 (gdb) xtype Lisp_Vectorlike Cannot access memory at address 0x2c9710 (gdb) xvector $11 = (struct Lisp_Vector *) 0x2c9710 Cannot access memory at address 0x2c9710 --8<---------------cut here---------------end--------------->8--- Bye, Tassilo
bug-gnu-emacs <at> gnu.org
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(Wed, 07 Nov 2012 19:21:02 GMT) Full text and rfc822 format available.Message #56 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Eli Zaretskii <eliz <at> gnu.org> To: Tassilo Horn <tsdh <at> gnu.org> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Wed, 07 Nov 2012 21:19:17 +0200
> From: Tassilo Horn <tsdh <at> gnu.org> > Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org > Date: Wed, 07 Nov 2012 19:45:21 +0100 > > the next crash occured. This time not while typing but while scrolling > (<down>) in an info buffer. If you were scrolling down, how come Emacs was processing a selection request event? AFAIK, that means some other application requested the selection data owned by Emacs. > (gdb) p *event > $3 = { > kind = SELECTION_REQUEST_EVENT, > code = 54395952, > part = 23068704, > modifiers = 0, > x = 400, > y = 322, > timestamp = 356, > frame_or_window = 2922261, > arg = 12766914 > } Someone who knows their way around X selection code should help you find out where does this value of frame_or_window come from, and how that Lisp object became inaccessible.
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(Thu, 08 Nov 2012 07:57:01 GMT) Full text and rfc822 format available.Message #59 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Eli Zaretskii <eliz <at> gnu.org>, Dmitry Antipov <dmantipov <at> yandex.ru> Cc: eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Thu, 08 Nov 2012 08:56:05 +0100
Eli Zaretskii <eliz <at> gnu.org> writes: >> the next crash occured. This time not while typing but while >> scrolling (<down>) in an info buffer. > > If you were scrolling down, how come Emacs was processing a selection > request event? I have no clue. The crash just happened again while typing in a mail, and it also was a SELECTION_REQUEST_EVENT with inaccessible frame_or_window. > AFAIK, that means some other application requested the selection data > owned by Emacs. Hm, I'm running a GNOME3 desktop. Right now, there are only some terminals running and a browser. Ah, and the parcellite clipboard manager. But those haven't been updated lately, and a week ago, emacs didn't crash. > Someone who knows their way around X selection code should help you > find out where does this value of frame_or_window come from, and how > that Lisp object became inaccessible. Looking at the ChangeLog, this one looks suspicious to me: 2012-11-02 Dmitry Antipov <dmantipov <at> yandex.ru> Remove pad from struct input_event. * termhooks.h (struct input_event): Remove padding field. Adjust comment. * keyboard.c (event_to_kboard): Simplify because frame_or_window member is never cons for a long time. Adjust comment. (mark_kboards): Adjust because SELECTION_REQUEST_EVENT and SELECTION_CLEAR_EVENT has no Lisp_Objects to mark. Add comment. * xterm.c (handle_one_xevent): Do not initialize frame_or_window field of SELECTION_REQUEST_EVENT and SELECTION_CLEAR_EVENT. It would fit the time frame since when the crashes appeared first. Bye, Tassilo
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(Thu, 08 Nov 2012 09:31:01 GMT) Full text and rfc822 format available.Message #62 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Dmitry Antipov <dmantipov <at> yandex.ru> To: Tassilo Horn <tsdh <at> gnu.org> Cc: Eli Zaretskii <eliz <at> gnu.org>, eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Thu, 08 Nov 2012 13:30:40 +0400
On 11/08/2012 11:56 AM, Tassilo Horn wrote: > Looking at the ChangeLog, this one looks suspicious to me: > > 2012-11-02 Dmitry Antipov <dmantipov <at> yandex.ru> > > Remove pad from struct input_event. > * termhooks.h (struct input_event): Remove padding field. > Adjust comment. > * keyboard.c (event_to_kboard): Simplify because frame_or_window > member is never cons for a long time. Adjust comment. > (mark_kboards): Adjust because SELECTION_REQUEST_EVENT and > SELECTION_CLEAR_EVENT has no Lisp_Objects to mark. Add comment. > * xterm.c (handle_one_xevent): Do not initialize frame_or_window > field of SELECTION_REQUEST_EVENT and SELECTION_CLEAR_EVENT. > > It would fit the time frame since when the crashes appeared first. Argh, my bad in r110766; should be fixed in r110828. Dmitry
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(Thu, 08 Nov 2012 10:56:01 GMT) Full text and rfc822 format available.Message #65 received at 12814 <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Dmitry Antipov <dmantipov <at> yandex.ru> Cc: Eli Zaretskii <eliz <at> gnu.org>, eggert <at> cs.ucla.edu, 12814 <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Thu, 08 Nov 2012 11:55:28 +0100
Dmitry Antipov <dmantipov <at> yandex.ru> writes: >> 2012-11-02 Dmitry Antipov <dmantipov <at> yandex.ru> >> >> Remove pad from struct input_event. >> * termhooks.h (struct input_event): Remove padding field. >> Adjust comment. >> * keyboard.c (event_to_kboard): Simplify because frame_or_window >> member is never cons for a long time. Adjust comment. >> (mark_kboards): Adjust because SELECTION_REQUEST_EVENT and >> SELECTION_CLEAR_EVENT has no Lisp_Objects to mark. Add comment. >> * xterm.c (handle_one_xevent): Do not initialize frame_or_window >> field of SELECTION_REQUEST_EVENT and SELECTION_CLEAR_EVENT. >> >> It would fit the time frame since when the crashes appeared first. > > Argh, my bad in r110766; should be fixed in r110828. Great, I'll update my copy and report back if it works now. Bye, Tassilo
Tassilo Horn <tsdh <at> gnu.org>
:Tassilo Horn <thorn <at> fastmail.fm>
:Message #70 received at 12814-done <at> debbugs.gnu.org (full text, mbox):
From: Tassilo Horn <tsdh <at> gnu.org> To: Dmitry Antipov <dmantipov <at> yandex.ru> Cc: Eli Zaretskii <eliz <at> gnu.org>, eggert <at> cs.ucla.edu, 12814-done <at> debbugs.gnu.org Subject: Re: bug#12814: 24.3.50; Emacs crash in event_to_kboard at keyboard.c:3421 Date: Mon, 12 Nov 2012 08:34:29 +0100
Tassilo Horn <tsdh <at> gnu.org> writes: >>> 2012-11-02 Dmitry Antipov <dmantipov <at> yandex.ru> >>> >>> Remove pad from struct input_event. >>> * termhooks.h (struct input_event): Remove padding field. >>> Adjust comment. >>> * keyboard.c (event_to_kboard): Simplify because frame_or_window >>> member is never cons for a long time. Adjust comment. >>> (mark_kboards): Adjust because SELECTION_REQUEST_EVENT and >>> SELECTION_CLEAR_EVENT has no Lisp_Objects to mark. Add comment. >>> * xterm.c (handle_one_xevent): Do not initialize frame_or_window >>> field of SELECTION_REQUEST_EVENT and SELECTION_CLEAR_EVENT. >>> >>> It would fit the time frame since when the crashes appeared first. >> >> Argh, my bad in r110766; should be fixed in r110828. > > Great, I'll update my copy and report back if it works now. I didn't have any further crashes, so it seems the bug is fixed, and I'm closing this issue. Thanks, Tassilo
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