11:13 p.m.
================================================================
Dear Bug Team!
I was editing a Perl file. I clicked on a tab to switch to another
Perl bufer, and XEmacs crashed. I couldn't repeat it. On standard
out, I got
Fatal error: assertion failed, file gui-x.c, line 284, RECORD_TYPEP (obj,
lrecord_type_cons)
Fatal error (6).
Your files have been auto-saved.
Use `M-x recover-session' to recover them.
Your version of XEmacs was distributed with a PROBLEMS file that may describe
your crash, and with luck a workaround. Please check it first, but do report
the crash anyway.
Please report this bug by invoking M-x report-emacs-bug, or by selecting
`Send Bug Report' from the Help menu. If that won't work, send ordinary
email to `crashes(a)xemacs.org'. *MAKE SURE* to include this entire output
from this crash, especially including the Lisp backtrace, as well as the
XEmacs configuration from M-x describe-installation (or equivalently, the
file `Installation' in the top of the build tree).
*Please* try *hard* to obtain a C stack backtrace; without it, we are unlikely
to be able to analyze the problem. Locate the core file produced as a result
of this crash (often called `core' or `core.<process-id>', and located in
the directory in which you started XEmacs or your home directory), and type
gdb /usr/local/bin/xemacs core
then type `where' at the debugger prompt. No GDB on your system? You may
have DBX, or XDB, or SDB. (Ask your system administrator if you need help.)
If no core file was produced, enable them (often with `ulimit -c unlimited')
in case of future recurrance of the crash.
Lisp backtrace follows:
# (unwind-protect ...)
# (unwind-protect ...)
# (unwind-protect ...)
# (unwind-protect ...)
# (unwind-protect ...)
# (unwind-protect ...)
# (unwind-protect ...)
("next_event_internal()" "[internal]")
# (unwind-protect ...)
# bind (inhibit-quit)
(next-event "[internal]")
# (condition-case ... . error)
# (catch top-level ...)
$
I ran gdb as htese instructions recommend, and got
(gdb) where
#0 0xfeb9f890 in _libc_kill () from /usr/lib/libc.so.1
#1 0x9c410 in fatal_error_signal (sig=6) at emacs.c:3440
#2 <signal handler called>
#3 0xfeb9f890 in _libc_kill () from /usr/lib/libc.so.1
#4 0xfeb358bc in abort () from /usr/lib/libc.so.1
#5 0x9c5a4 in zero_out_command_line_status_vars () at emacs.c:4283
(gdb)
Hope this helps.
-- Pete
================================================================
System Info to help track down your bug:
---------------------------------------
uname -a: SunOS cworks 5.8 Generic_108528-18 sun4u sparc SUNW,Sun-Fire-280R
./configure '--with-xpm' '--with-png'
'--site-libraries=/usr/local/lib'
'--site-includes=/usr/openwin/include/X11:/usr/local/include'
'--without-ldap'
XEmacs 21.5-b11 "cabbage" configured for `sparc-sun-solaris2.8'.
Compilation / Installation:
Source code location: /usr/src/xemacs-21.5.11
Installation prefix: /usr/local
Additional header files: /usr/openwin/include/X11 /usr/local/include
Additional libraries: /usr/local/lib
Runtime library search path:
/usr/ccs/lib:/usr/local/lib:/usr/dt/lib:/usr/openwin/lib:/opt/sfw/lib/gcc-lib/sparc-sun-solaris2.8/2.95.3:/opt/sfw/lib
Operating system description file: `s/sol2.h'
Machine description file: `m/sparc.h'
Compiler: gcc -Wall -Wno-switch -Winline -Wmissing-prototypes
-Wsign-compare -Wundef -Wstrict-prototypes -Wshadow -Wmissing-declarations -Wpointer-arith
-g -O3
Relocating allocator for buffers: yes
GNU version of malloc: yes
Window System:
Compiling in support for the X window system:
- X Windows headers location: /usr/dt/include /usr/openwin/include
- X Windows libraries location: /usr/dt/lib /usr/openwin/lib
- Handling WM_COMMAND properly.
Using Lucid menubars.
Using Lucid scrollbars.
Using Motif dialog boxes.
Using Motif native widgets.
TTY:
Compiling in support for ncurses.
Images:
Compiling in support for GIF images (builtin).
Compiling in support for XPM images.
Compiling in support for PNG images.
Compiling in support for JPEG images.
Sound:
Compiling in support for sound (native).
Databases:
Compiling in support for DBM.
Internationalization:
Mail:
Compiling in support for "dot-locking" mail spool file locking method.
Other Features:
Inhibiting IPv6 canonicalization at startup.
Compiling in support for ToolTalk.
Compiling in support for dynamic shared object modules.
Compiling in support for extra debugging code.
WARNING: ---------------------------------------------------------
WARNING: Compiling in support for runtime error checking.
WARNING: XEmacs will run noticeably more slowly as a result.
WARNING: Error checking is on by default for XEmacs beta releases.
WARNING: ---------------------------------------------------------
Load-Path Lisp Shadows:
----------------------
(/usr/local/lib/xemacs/xemacs-packages/lisp/build/build-report
/usr/local/lib/xemacs-21.5-b11/lisp/build-report)
Installed XEmacs Packages:
-------------------------
((zenirc:version 1.13 :type regular)
(xslt-process :version 1.11 :type regular)
(xslide :version 1.04 :type regular)
(xemacs-devel :version 1.5 :type single-file)
(xemacs-base :version 1.75 :type regular)
(w3 :version 1.28 :type regular)
(vm :version 7.07 :type regular)
(viper :version 1.35 :type regular)
(view-process :version 1.12 :type regular)
(vhdl :version 1.16 :type regular)
(vc-cc :version 1.21 :type regular)
(vc :version 1.35 :type regular)
(tramp :version 1.11 :type regular)
(tpu :version 1.12 :type regular)
(tooltalk :version 1.13 :type regular)
(tm :version 1.35 :type regular)
(time :version 1.12 :type regular)
(textools :version 1.14 :type regular)
(text-modes :version 1.58 :type single-file)
(texinfo :version 1.23 :type regular)
(supercite :version 1.19 :type regular)
(strokes :version 1.08 :type regular)
(speedbar :version 1.26 :type regular)
(sounds-wav :version 1.1 :type regular)
(sounds-au :version 1.1 :type regular)
(sml-mode :version 0.07000000000000001 :type regular)
(slider :version 1.13 :type regular)
(sieve :version 1.11 :type regular)
(sh-script :version 1.17 :type regular)
(sgml :version 1.08 :type regular)
(semantic :version 1.17 :type regular)
(scheme :version 1.13 :type regular)
(sasl :version 1.12 :type regular)
(ruby-modes :version 1.01 :type regular)
(rmail :version 1.13 :type regular)
(reftex :version 1.28 :type regular)
(python-modes :version 1.02 :type single-file)
(psgml-dtds :version 1.02 :type regular)
(psgml :version 1.38 :type regular)
(ps-print :version 1.08 :type regular)
(prog-modes
:version
1
.72
:type
single-file)
(pgg :version 1.02 :type regular)
(perl-modes :version 1.04 :type single-file)
(pcomplete :version 1.02 :type regular)
(pcl-cvs :version 1.64 :type regular)
(pc :version 1.25 :type single-file)
(os-utils :version 1.3 :type single-file)
(ocaml :version 0.04 :type regular)
(net-utils :version 1.31 :type single-file)
(mmm-mode :version 1.0 :type regular)
(misc-games :version 1.16 :type single-file)
(mine :version 1.14 :type regular)
(mh-e :version 1.17 :type regular)
(mew :version 1.17 :type regular)
(mailcrypt :version 2.12 :type regular)
(mail-lib :version 1.56 :type regular)
(liece :version 1.1 :type regular)
(jde :version 1.43 :type regular)
(ispell :version 1.24 :type regular)
(ilisp :version 1.29 :type regular)
(igrep :version 1.1 :type regular)
(idlwave :version 1.28 :type regular)
(ibuffer :version 1.08 :type regular)
(hm--html-menus :version 1.18 :type regular)
(haskell-mode :version 1.05 :type regular)
(gnus :version 1.65 :type regular)
(gnats :version 1.15 :type regular)
(games :version 1.13 :type regular)
(fsf-compat :version 1.12 :type single-file)
(frame-icon :version 1.09 :type regular)
(fortran-modes :version 1.02 :type single-file)
(forms :version 1.14 :type regular)
(footnote :version 1.15 :type regular)
(eudc :version 1.37 :type regular)
(eterm :version 1.13 :type regular)
(ess :version 1.03 :type regular)
(eshell :version 1.04 :type regular)
(emerge :version 1.09 :type regular)
(elib :version 1.1 :type single-file)
(eieio :version 1.04 :type regular)
(efs :version 1.29 :type regular)
(edt :version 1.12 :type regular)
(edit-utils :version 1.98 :type single-file)
(ediff :version 1.46 :type regular)
(edebug :version 1.15 :type regular)
(ecrypto :version 0.12 :type regular)
(ecb :version 1.01 :type regular)
(docbookide :version 0.06 :type regular)
(dired :version 1.13 :type regular)
(dictionary :version 1.11 :type regular)
(debug :version 1.16 :type regular)
(crisp :version 1.12 :type regular)
(cookie :version 1.14 :type regular)
(clearcase :version 1.04 :type regular)
(cc-mode :version 1.32 :type regular)
(calendar :version 1.19 :type regular)
(calc :version 1.23 :type regular)
(c-support :version 1.16 :type single-file)
(build :version 1.1 :type regular)
(bbdb :version 1.21 :type regular)
(auctex :version 1.33 :type regular)
(apel :version 1.26 :type regular)
(ada :version 1.13 :type regular))
Installed Modules:
-----------------
Features:
--------
(mail-abbrevs xemacsbug shadow sendmail rfc822 cperl-mode efs-cu
font-lock cus-face crypt crypt++ sgml-mode psgml zenirc-autoloads
xslt-process-autoloads xslide-autoloads xemacs-devel-autoloads
xemacs-base-autoloads w3-autoloads vm-autoloads viper-autoloads
view-process-autoloads vhdl-autoloads vc-cc-autoloads vc-autoloads
tramp-autoloads tpu-autoloads tooltalk-autoloads tm-autoloads
time-autoloads textools-autoloads text-modes-autoloads
texinfo-autoloads supercite-autoloads strokes-autoloads
speedbar-autoloads sounds-wav-autoloads sounds-au-autoloads
sml-mode-autoloads slider-autoloads sieve-autoloads
sh-script-autoloads sgml-autoloads semantic-autoloads scheme-autoloads
sasl-autoloads ruby-modes-autoloads rmail-autoloads reftex-autoloads
python-modes-autoloads psgml-dtds-autoloads psgml-autoloads
ps-print-autoloads prog-modes-autoloads pgg-autoloads
perl-modes-autoloads pcomplete-autoloads pcl-cvs-autoloads
pc-autoloads os-utils-autoloads ocaml-autoloads net-utils-autoloads
mmm-mode-autoloads misc-games-autoloads mine-autoloads mh-e-autoloads
mew-autoloads mailcrypt-autoloads mail-lib-autoloads liece-autoloads
jde-autoloads ispell-autoloads ilisp-autoloads igrep-autoloads
idlwave-autoloads ibuffer-autoloads hm--html-menus-autoloads
haskell-mode-autoloads gnus-autoloads gnats-autoloads games-autoloads
fsf-compat-autoloads frame-icon-autoloads fortran-modes-autoloads
forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads
ess-autoloads eshell-autoloads emerge-autoloads elib-autoloads
eieio-autoloads efs-autoloads edt-autoloads edit-utils-autoloads
ediff-autoloads edebug-autoloads ecrypto-autoloads ecb-autoloads
docbookide-autoloads dired-autoloads dictionary-autoloads
debug-autoloads crisp-autoloads cookie-autoloads clearcase-autoloads
cc-mode-autoloads calendar-autoloads calc-autoloads
c-support-autoloads build-autoloads bbdb-autoloads auctex-autoloads
apel-autoloads ada-autoloads modules-autoloads auto-autoloads loadhist
rsz-minibuf auto-show fontl-hooks x-iso8859-1 code-cmds gutter-items
menubar-items x-menubar mode-motion mouse behavior itimer auto-save
lisp-mode easymenu iso8859-1 page buff-menu lib-complete cus-file
derived env text-props frame obsolete cus-start custom widget cl-extra
mini-cl cl cl-19 packages backquote very-early-lisp tooltalk unicode
lucid-scrollbars cut-buffer lucid-menubars motif-dialogs x
c-balloon-help tty-frames tty toolbar native-sound scrollbar
unix-processes multicast network-streams subprocesses modules
menu-accelerator-support menubar dbm md5 xemacs gutter png gif jpeg
xpm xbm lisp-float-type file-coding usg-unix-v dialog devices
window-system base64)
Recent keystrokes:
-----------------
misc-user M-SPC M-x r e p TAB e BS o TAB r TAB e m
TAB RET
Recent messages (most recent first):
-----------------------------------
Auto save file for draft message exists; consider M-x mail-recover
Loading xemacsbug...done
Loading xemacsbug...
Making completion list...
Making completion list...
Fontifying catalyst.pm... done.
Loading cperl-mode...done
Fontifying catalyst.pm... (regexps)...................
Fontifying catalyst.pm... (regexps)...................
Fontifying catalyst.pm... (regexps)..................
Fontifying catalyst.pm... (regexps)..................
Fontifying catalyst.pm... (regexps)..................
Fontifying catalyst.pm... (regexps).................
Fontifying catalyst.pm... (regexps).................
Fontifying catalyst.pm... (regexps)................
Fontifying catalyst.pm... (regexps)................
Fontifying catalyst.pm... (regexps)................
Fontifying catalyst.pm... (regexps)...............
Fontifying catalyst.pm... (regexps)...............
Fontifying catalyst.pm... (regexps)...............
9:11 a.m.
>>>> "Pete" == Pete Siemsen
<siemsen(a)ucar.edu> writes:
Thanks for the report. I don't know what is causing these, but I just
saw one, too.
Pete> I was editing a Perl file. I clicked on a tab to switch to
Pete> another Perl bufer, and XEmacs crashed. I couldn't repeat
Pete> it. On standard out, I got
I don't think Perl has anything to do with it, it's native widgets, I
think (I see them sporadically in customize buffers and a local
library I have that uses native widgets via widget.el, always when
clicking on something).
Pete> Fatal error: assertion failed, file gui-x.c, line 284,
Pete> RECORD_TYPEP (obj, lrecord_type_cons)
Pete> I ran gdb as htese instructions recommend, and got
[4 uninteresting frames elided]
Pete> #5 0x9c5a4 in zero_out_command_line_status_vars () at emacs.c:4283
You only got 5 frames of backtrace? Urk.
If you go up a few frames (gdb command is "up" oddly enough ;-), and
do
(gdb) print * (struct lrecord_header *) client_data
$5 = {type = 63, mark = 0, c_readonly = 1, lisp_readonly = 1, unused = 1824183}
(gdb) print (enum lrecord_type) lrecord_type_free + 0
$11 = 63
Suspicious, huh?
I'd be interested to know what the type member is in your crash. The
fact that I got "free" suggests uninitialized data somewhere, but if
your stack was smashed (as the small number of frames suggests), then
that could just be a random number. If you get a different number,
you can just report it, but if you're curious the list of types is in
enum lrecord_type in src/lrecord.h.
--
Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp
University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN
Ask not how you can "do" free software business;
ask what your business can "do for" free software.
4:36 a.m.
>> "SJT" == Stephen J Turnbull
<stephen(a)xemacs.org> writes:
>>>>> "Pete" == Pete Siemsen <siemsen(a)ucar.edu> writes:
SJT> Thanks for the report. I don't know what is causing these, but I
SJT> just saw one, too.
I sent in a bug report about this one sometime last week. I can still
see these crashes.
SJT> I don't think Perl has anything to do with it, it's native widgets, I
SJT> think (I see them sporadically in customize buffers and a local
SJT> library I have that uses native widgets via widget.el, always when
SJT> clicking on something).
SJT> [4 uninteresting frames elided]
Pete> #5 0x9c5a4 in zero_out_command_line_status_vars () at emacs.c:4283
SJT> You only got 5 frames of backtrace? Urk.
Does this help?
Program received signal SIGABRT, Aborted.
0x28624b64 in kill () from /usr/lib/libc.so.4
(gdb) bt
#0 0x28624b64 in kill () from /usr/lib/libc.so.4
#1 0x2866610a in abort () from /usr/lib/libc.so.4
#2 0x80c5eaf in really_abort () at emacs.c:4394
#3 0x80c5c07 in assert_failed (file=0x82e948c "gui-x.c", line=284,
expr=0x82e82c0 "RECORD_TYPEP (obj, lrecord_type_cons)") at emacs.c:3728
#4 0x82271ff in popup_selection_callback (widget=0x8d86200, ignored_id=65544,
client_data=0x8d508dc) at lisp.h:1700
#5 0x8249b75 in xlw_tab_control_callback (w=0x8d86200, client_data=0x8a95b60,
call_data=0x8d86200) at lwlib-Xlw.c:363
#6 0x28432db9 in XtCallCallbackList () from /usr/X11R6/lib/libXt.so.6
#7 0x824de0d in XawTabsSetTop (w=0x8d86200, callCallbacks=1) at xlwtabs.c:1310
#8 0x824ee9c in TabsSelect (w=0x8cdde00, event=0xbfbff440, params=0x0,
num_params=0x2846f0b4) at xlwtabs.c:1079
#9 0x2845fa82 in HandleActions () from /usr/X11R6/lib/libXt.so.6
#10 0x2845ff03 in HandleSimpleState () from /usr/X11R6/lib/libXt.so.6
#11 0x28460441 in _XtTranslateEvent () from /usr/X11R6/lib/libXt.so.6
#12 0x2843dd6d in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#13 0x2843e701 in _XtDefaultDispatcher () from /usr/X11R6/lib/libXt.so.6
#14 0x2843e94e in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6
#15 0x284494c5 in XtAppProcessEvent () from /usr/X11R6/lib/libXt.so.6
#16 0x820c80e in emacs_Xt_next_event (emacs_event=0x84cf48c) at event-Xt.c:2845
#17 0x80dc377 in event_stream_next_event (event=0x84cf48c)
at event-stream.c:2078
#18 0x80dc6bb in next_event_internal (target_event=139261068, allow_queued=1)
at event-stream.c:2142
#19 0x80dcd9a in Fnext_event (event=139261068, prompt=678174468)
at event-stream.c:2367
#20 0x80a2afc in Fcommand_loop_1 () at cmdloop.c:568
#21 0x80a2dca in command_loop_1 (dummy=678174468) at cmdloop.c:488
#22 0x80c83c7 in condition_case_1 (handlers=678172356,
bfun=0x80a2d8c <command_loop_1>, barg=678174468,
hfun=0x80a2e3c <cmd_error>, harg=678174468) at eval.c:1917
#23 0x80a2f33 in command_loop_2 (dummy=678174468) at cmdloop.c:251
#24 0x80d109c in internal_catch (tag=677963412,
func=0x80a2ef0 <command_loop_2>, arg=678174468, threw=0x0, thrown_tag=0x0)
at eval.c:1527
#25 0x80a27ac in initial_command_loop (load_me=678174468) at cmdloop.c:300
#26 0x80c3e83 in xemacs_21_5_b11_i386_unknown_freebsd4_7 (argc=1,
argv=0xbfbff98c, envp=0xbfbff994, restart=0) at emacs.c:2400
#27 0x80c5fa0 in main (argc=1, argv=0xbfbff98c, envp=0xbfbff994)
at emacs.c:2830
SJT> If you go up a few frames (gdb command is "up" oddly enough ;-), and
SJT> do
SJT> (gdb) print * (struct lrecord_header *) client_data
SJT> $5 = {type = 63, mark = 0, c_readonly = 1, lisp_readonly = 1, unused = 1824183}
SJT> (gdb) print (enum lrecord_type) lrecord_type_free + 0
SJT> $11 = 63
SJT> Suspicious, huh?
SJT> I'd be interested to know what the type member is in your crash. The
SJT> fact that I got "free" suggests uninitialized data somewhere, but if
SJT> your stack was smashed (as the small number of frames suggests), then
SJT> that could just be a random number. If you get a different number,
SJT> you can just report it, but if you're curious the list of types is in
SJT> enum lrecord_type in src/lrecord.h.
I assume in the crash above it would be in frame 5. I get the
following:
(gdb) fr 5
#5 0x8249b75 in xlw_tab_control_callback (w=0x8d86200, client_data=0x8a95b60,
call_data=0x8d86200) at lwlib-Xlw.c:363
363 instance->info->selection_cb (w, id, widget_arg);
(gdb) p *(struct lrecord_header*)client_data
$1 = {type = 0, mark = 0, c_readonly = 1, lisp_readonly = 1, unused = 72123}
Actually I am quite interested in debugging this crash and I have been
trying to read the Internals info doc. Its been a little slow though,
there is so much to learn. Someday soon...
Kaarthik
7:30 a.m.
i'm almost positive this is due to an oversight on my part when modifying the
gcpro-popup-callback mechanism for use with kkcc. patch forthcoming as soon as
i test it.
ben
----- Original Message -----
From: "Kaarthik Sivakumar" <kaarthik(a)comcast.net>
To: "Stephen J. Turnbull" <stephen(a)xemacs.org>
Cc: "Pete Siemsen" <siemsen(a)ucar.edu>; "XEmacs Beta"
<xemacs-beta(a)xemacs.org>;
<ben(a)xemacs.org>; <andy(a)xemacs.org>
Sent: Wednesday, March 05, 2003 9:36 PM
Subject: Re: [Bug: 21.5-b11] assertion failed
>>> "SJT" == Stephen J Turnbull
<stephen(a)xemacs.org> writes:
>>>>>> "Pete" == Pete Siemsen <siemsen(a)ucar.edu>
writes:
SJT> Thanks for the report. I don't know what is causing these, but I
SJT> just saw one, too.
I sent in a bug report about this one sometime last week. I can still
see these crashes.
SJT> I don't think Perl has anything to do with it, it's native widgets, I
SJT> think (I see them sporadically in customize buffers and a local
SJT> library I have that uses native widgets via widget.el, always when
SJT> clicking on something).
SJT> [4 uninteresting frames elided]
Pete> #5 0x9c5a4 in zero_out_command_line_status_vars () at emacs.c:4283
SJT> You only got 5 frames of backtrace? Urk.
Does this help?
Program received signal SIGABRT, Aborted.
0x28624b64 in kill () from /usr/lib/libc.so.4
(gdb) bt
#0 0x28624b64 in kill () from /usr/lib/libc.so.4
#1 0x2866610a in abort () from /usr/lib/libc.so.4
#2 0x80c5eaf in really_abort () at emacs.c:4394
#3 0x80c5c07 in assert_failed (file=0x82e948c "gui-x.c", line=284,
expr=0x82e82c0 "RECORD_TYPEP (obj, lrecord_type_cons)") at emacs.c:3728
#4 0x82271ff in popup_selection_callback (widget=0x8d86200, ignored_id=65544,
client_data=0x8d508dc) at lisp.h:1700
#5 0x8249b75 in xlw_tab_control_callback (w=0x8d86200, client_data=0x8a95b60,
call_data=0x8d86200) at lwlib-Xlw.c:363
#6 0x28432db9 in XtCallCallbackList () from /usr/X11R6/lib/libXt.so.6
#7 0x824de0d in XawTabsSetTop (w=0x8d86200, callCallbacks=1) at
xlwtabs.c:1310
#8 0x824ee9c in TabsSelect (w=0x8cdde00, event=0xbfbff440,
params=0x0,
num_params=0x2846f0b4) at xlwtabs.c:1079
#9 0x2845fa82 in HandleActions () from /usr/X11R6/lib/libXt.so.6
#10 0x2845ff03 in HandleSimpleState () from /usr/X11R6/lib/libXt.so.6
#11 0x28460441 in _XtTranslateEvent () from /usr/X11R6/lib/libXt.so.6
#12 0x2843dd6d in XtDispatchEventToWidget () from /usr/X11R6/lib/libXt.so.6
#13 0x2843e701 in _XtDefaultDispatcher () from /usr/X11R6/lib/libXt.so.6
#14 0x2843e94e in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6
#15 0x284494c5 in XtAppProcessEvent () from /usr/X11R6/lib/libXt.so.6
#16 0x820c80e in emacs_Xt_next_event (emacs_event=0x84cf48c) at
event-Xt.c:2845
#17 0x80dc377 in event_stream_next_event (event=0x84cf48c)
at event-stream.c:2078
#18 0x80dc6bb in next_event_internal (target_event=139261068, allow_queued=1)
at event-stream.c:2142
#19 0x80dcd9a in Fnext_event (event=139261068, prompt=678174468)
at event-stream.c:2367
#20 0x80a2afc in Fcommand_loop_1 () at cmdloop.c:568
#21 0x80a2dca in command_loop_1 (dummy=678174468) at cmdloop.c:488
#22 0x80c83c7 in condition_case_1 (handlers=678172356,
bfun=0x80a2d8c <command_loop_1>, barg=678174468,
hfun=0x80a2e3c <cmd_error>, harg=678174468) at eval.c:1917
#23 0x80a2f33 in command_loop_2 (dummy=678174468) at cmdloop.c:251
#24 0x80d109c in internal_catch (tag=677963412,
func=0x80a2ef0 <command_loop_2>, arg=678174468, threw=0x0, thrown_tag=0x0)
at eval.c:1527
#25 0x80a27ac in initial_command_loop (load_me=678174468) at cmdloop.c:300
#26 0x80c3e83 in xemacs_21_5_b11_i386_unknown_freebsd4_7 (argc=1,
argv=0xbfbff98c, envp=0xbfbff994, restart=0) at emacs.c:2400
#27 0x80c5fa0 in main (argc=1, argv=0xbfbff98c, envp=0xbfbff994)
at emacs.c:2830
SJT> If you go up a few frames (gdb command is "up" oddly enough ;-), and
SJT> do
SJT> (gdb) print * (struct lrecord_header *) client_data
SJT> $5 = {type = 63, mark = 0, c_readonly = 1, lisp_readonly = 1, unused =
1824183}
SJT> (gdb) print (enum lrecord_type) lrecord_type_free + 0
SJT> $11 = 63
SJT> Suspicious, huh?
SJT> I'd be interested to know what the type member is in your crash. The
SJT> fact that I got "free" suggests uninitialized data somewhere, but if
SJT> your stack was smashed (as the small number of frames suggests), then
SJT> that could just be a random number. If you get a different number,
SJT> you can just report it, but if you're curious the list of types is in
SJT> enum lrecord_type in src/lrecord.h.
I assume in the crash above it would be in frame 5. I get the
following:
(gdb) fr 5
#5 0x8249b75 in xlw_tab_control_callback (w=0x8d86200, client_data=0x8a95b60,
call_data=0x8d86200) at lwlib-Xlw.c:363
363 instance->info->selection_cb (w, id, widget_arg);
(gdb) p *(struct lrecord_header*)client_data
$1 = {type = 0, mark = 0, c_readonly = 1, lisp_readonly = 1, unused = 72123}
Actually I am quite interested in debugging this crash and I have been
trying to read the Internals info doc. Its been a little slow though,
there is so much to learn. Someday soon...
Kaarthik
7727
days inactive
7729
days old
3 comments
4 participants
participants (4)
-
Ben Wing -
Kaarthik Sivakumar -
Pete Siemsen -
Stephen J. Turnbull