fatal error during isearch-forward
Stephen J. Turnbull
stephen at xemacs.org
Sun Dec 9 04:07:47 EST 2007
Aidan Kehoe writes:
> In local testing, I can reproduce your bug; and it seems that Stephen’s
> patch of http://mid.gmane.org/87hcixwkh4.fsf@uwakimon.sk.tsukuba.ac.jp ,
> which he has yet to commit, eliminates it. We’d love confirmation of this
> from you; despite Stephen’s ‘do not apply this patch’ in his message, the
> change is easy to apply.
Now that I've got a test that reproduces, I'll apply it tomorrow.
Note that the reason for third parties not to apply is that I intend
to make a whitespace change, and their CVS checkouts will have
conflicts due to that since the posted patch ignores whitespace.
However, there may very well be another bug lurking, as the backtrace
I was looking at was in a function that a pure ASCII search pattern
should never reach. (If somebody cares to look, the function is
search.c, simple_search(); if only ASCII is in use, boyer_moore()
should always be used instead.)
-------------- next part --------------
>
> Ar an t-ocht? l? de m? na Nollaig, scr?obh Klaus Reim:
>
> > Hi!
> >
> > I encountered a fatal error during an isearch-forward
> > within a several 10000 lines buffer.
> > Eventually it turned out that "size does not matter":
> > I was able to boil the problem down to a mere 3-bytes buffer
> > containing the letters "IAI".
> > If you place point just before the 'A', and then
> > do a "C-s C-w" sequence, xemacs dies from:
Hm, interesting.
> >
> > Fatal error: assertion failed, file search.c, line 1487,
> > (this_pos) > ((Bytebpos) 1) && this_pos <= ((buf)->text->z + 0)
> >
> > instead of marking the "AI".
> > This occurs for example in today's cvs-head.
> > To be more precise, the assertion triggers for
> > CVS date-tag "-D 2007-08-27" and later, while it does not for "-D 2007-08-26"
> > Among the few files changed in that interval, it turned out
> > that revision 1.9 of "lisp/mule/latin.el" causes the problem
> > (or maybe makes an older problem evident).
> > I built my version of xemacs --with-mule.
This absolutely cannot happen without Mule, since that assert is only
enabled with Mule.
> >
> > Find below my system info (saw the same effect on
> > a redhat system as well, with the same build configuration).
> >
> > regards,
> > Klaus
> >
> >
> > ================================================================
> >
> > System Info to help track down your bug:
> > ---------------------------------------
> >
> > uname -a: Linux linux 2.6.11.4-21.17-default #1 Fri Apr 6 08:42:34 UTC 2007 i686 athlon i386 GNU/Linux
> >
> > configure '--with-package-path=/home/klr/xemacs/lib/xemacs/xemacs-packages:/home/klr/xemacs/lib/xemacs/mule-packages' '--infodir=/home/klr/xemacs/xemacs-21.5/info' '--with-infopath=/home/klr/xemacs/xemacs-packages:/home/klr/xemacs/mule-packages' '--with-athena=3d' '--with-xpm' '--with-png' '--with-jpeg' '--with-tiff' '--with-gif' '--with-mule' '--with-gpm=yes' '--with-sound=native' '--with-pop' '--with-clash-detection' '--with-canna=yes' '--with-wnn=yes' '--with-xim=xlib' '--with-database=no' '--with-postgresql=no' '--with-ldap=no' '--with-hesiod=no' '--with-widgets=athena' '--with-menubars=lucid' '--with-scrollbars=lucid' '--with-dialogs=athena' '--with-msw=no' '--with-optimization' '--with-cflags-debugging='
> >
> >
> > XEmacs 21.5-b28 "fuki" (+CVS-20071118) configured for `i686-pc-linux'.
> >
> > Compilation Environment and Installation Defaults:
> > Source code location: /home/klr/xemacs/xemacs-21.5
> > Installation prefix: /usr/local
> > Operating system description file: `s/linux.h'
> > Machine description file: `m/intel386.h'
> > Compiler version: gcc (GCC) 3.3.5 20050117 (prerelease) (SUSE Linux)
> > - GCC specs file: /usr/lib/gcc-lib/i586-suse-linux/3.3.5/specs
> > - Compiler command: gcc -Wall -Wno-switch -Wundef -Wsign-compare -Wno-char-subscripts -Wpacked -Wunused-parameter -O3
> > libc version:
> > Relocating allocator for buffers: no
> > GNU version of malloc: yes
> > - Using Doug Lea's new malloc from the GNU C Library.
> >
> > Window System:
> > Compiling in support for the X window system:
> > - X Windows headers location: /usr/X11/include
> > - X Windows libraries location: /usr/X11/lib
> > - Handling WM_COMMAND properly.
> > Compiling in support for the Athena widget set:
> > - Athena headers location: X11/Xaw3d
> > - Athena library to link: Xaw3d
> > Using Lucid menubars.
> > Using Lucid scrollbars.
> > Using Athena dialog boxes.
> > Using Athena native widgets.
> >
> > TTY:
> > Compiling in support for GPM (General Purpose Mouse).
> >
> > 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.
> > Compiling in support for TIFF images.
> >
> > Sound:
> > Compiling in support for sound (native).
> > Compiling in support for ALSA (Advanced Linux Sound Architecture).
> >
> > Databases:
> >
> > Internationalization:
> > Compiling in support for Mule (multi-lingual Emacs).
> > Compiling in support for XIM (X11R5+ I18N input method).
> > - Using raw Xlib to provide XIM support.
> >
> > Mail:
> > Compiling in support for POP mail retrieval.
> > Compiling in support for "file" mail spool file locking method.
> >
> > Other Features:
> > Inhibiting IPv6 canonicalization at startup.
> > Compiling in support for dynamic shared object modules.
> > Using the new GC mark algorithms (KKCC).
> > WARNING: ---------------------------------------------------------
> > WARNING: The new algorithms are experimental. They are enabled by
> > WARNING: default for this release. Use `--disable-kkcc' to
> > WARNING: turn it off.
> > WARNING: ---------------------------------------------------------
> > Using the new portable dumper.
> > Dumping into executable.
> > Compiling in support for extra debugging code.
> > Compiling in support for runtime error checking.
> > WARNING: ---------------------------------------------------------
> > 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:
> > ----------------------
> > (/home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/ethio-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/ethio-util
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/china-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/china-util
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/japan-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/japan-util
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/korea-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/korea-util
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/cyril-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/cyril-util
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-base/viet-util
> > /home/klr/xemacs/xemacs-21.5/lisp/mule/viet-util
> > /home/klr/xemacs/lib/xemacs/xemacs-packages/lisp/xemacs-base/easy-mmode
> > /home/klr/xemacs/xemacs-21.5/lisp/easy-mmode
> > /home/klr/xemacs/lib/xemacs/mule-packages/lisp/mule-ucs/unicode
> > /home/klr/xemacs/xemacs-21.5/lisp/unicode
> > /home/klr/xemacs/lib/xemacs/xemacs-packages/lisp/build/build-report
> > /home/klr/xemacs/xemacs-21.5/lisp/build-report
> > /home/klr/xemacs/lib/xemacs/xemacs-packages/lisp/xemacs-base/regexp-opt
> > /home/klr/xemacs/xemacs-21.5/lisp/regexp-opt /home/klr/lisp/font-lock
> > /home/klr/xemacs/xemacs-21.5/lisp/font-lock)
> >
> > Internationalization Settings:
> > -------------------------
> >
> > Environment:
> >
> > Value of LC_ALL : nil
> > Value of LC_COLLATE : nil
> > Value of LC_CTYPE : nil
> > Value of LC_MESSAGES : nil
> > Value of LC_MONETARY : nil
> > Value of LC_NUMERIC : nil
> > Value of LC_TIME : nil
> > Value of LANG : C
> >
> > Lisp locale settings:
> >
> > current-language-environment => "English"
> > default-buffer-file-coding-system => iso-8859-1
> > default-process-coding-system => (undecided . iso-8859-1)
> > (current-locale) => "C"
> > keyboard-coding-system => iso-8859-1
> > terminal-coding-system => iso-8859-1
> > (coding-priority-list) =>
> > (no-conversion utf-16-little-endian-bom utf-16-bom utf-8-bom iso-7
> > utf-8 iso-8-1 iso-8-2 iso-8-designate iso-lock-shift shift-jis
> > big5 utf-16-little-endian utf-16 ucs-4)
> >
> > Coding system aliases:
> >
> > 'native is aliased to iso-8859-1
> > 'file-name is aliased to native
> > 'mswindows-multibyte-system-default is not a coding system alias
> >
> >
> > Installed XEmacs Packages:
> > -------------------------
> > (skk ver: 1.24 upstream: 10.62a)
> > (mule-ucs ver: 1.16 upstream: 0.84)
> > (mule-base ver: 1.52 upstream: No-Upstream-Ver)
> > (lookup ver: 1.15 upstream: 1.0)
> > (leim ver: 1.26 upstream: No-Upstream-Ver)
> > (egg-its ver: 1.27 upstream: No-Upstream-Ver)
> > (edict ver: 1.16 upstream: 0.9.9)
> > (zenirc ver: 1.16 upstream: 2.112)
> > (xwem ver: 1.22 upstream: lg at xwem.org--2005/xwem--main--2.1--versionfix-1)
> > (xslt-process ver: 1.12 upstream: 1.2.1)
> > (xslide ver: 1.09 upstream: 0.2.2)
> > (xlib ver: 1.14 upstream: lg at xwem.org--2005/xlib--main--2.1--version-0)
> > (xetla ver: 1.01 upstream: steve at eicq.org--2005/xetla--main--1.1--version-0)
> > (xemacs-devel ver: 1.76 upstream: No-Upstream-Ver)
> > (x-symbol ver: 1.1 upstream: 4.5.1)
> > (w3 ver: 1.34 upstream: 4.0pre47)
> > (vm ver: 7.26 upstream: 7.19)
> > (viper ver: 1.59 upstream: 3.09)
> > (view-process ver: 1.13 upstream: 2.4)
> > (vhdl ver: 1.22 upstream: 3.33.12)
> > (vc-cc ver: 1.22 upstream: No-Upstream-Ver)
> > (vc ver: 1.45 upstream: No-Upstream-Ver)
> > (tramp ver: 1.39 upstream: 2.0.56)
> > (tpu ver: 1.14 upstream: 4.2X)
> > (tooltalk ver: 1.15 upstream: No-Upstream-Ver)
> > (tm ver: 1.38 upstream: No-Upstream-Ver)
> > (time ver: 1.14 upstream: 1.17)
> > (textools ver: 1.15 upstream: No-Upstream-Ver)
> > (text-modes ver: 1.95 upstream: No-Upstream-Ver)
> > (texinfo ver: 1.3 upstream: No-Upstream-Ver)
> > (supercite ver: 1.21 upstream: 3.55x3)
> > (strokes ver: 1.1 upstream: No-Upstream-Ver)
> > (speedbar ver: 1.28 upstream: 0.14beta4)
> > (sounds-wav ver: 1.12 upstream: No-Upstream-Ver)
> > (sounds-au ver: 1.12 upstream: No-Upstream-Ver)
> > (sml-mode ver: 0.12 upstream: 3.9.5)
> > (slider ver: 1.15 upstream: 0.3x1)
> > (sieve ver: 1.18 upstream: No-Upstream-Ver)
> > (sh-script ver: 1.22 upstream: 2.0f)
> > (sgml ver: 1.11 upstream: No-Upstream-Ver)
> > (semantic ver: 1.2 upstream: 1.4.4)
> > (scheme ver: 1.16 upstream: No-Upstream-Ver)
> > (sasl ver: 1.16 upstream: 1.14.4)
> > (ruby-modes ver: 1.02 upstream: 1.6.8)
> > (rmail ver: 1.14 upstream: No-Upstream-Ver)
> > (reftex ver: 1.34 upstream: 4.21)
> > (re-builder ver: 1.05 upstream: 1.20)
> > (psgml-dtds ver: 1.03 upstream: No-Upstream-Ver)
> > (ps-print ver: 1.11 upstream: 6.5.6)
> > (prog-modes ver: 2.15 upstream: No-Upstream-Ver)
> > (pgg ver: 1.06 upstream: 0.1)
> > (pcomplete ver: 1.04 upstream: 1.1.6)
> > (pcl-cvs ver: 1.68 upstream: R-2_9_9)
> > (pc ver: 1.28 upstream: No-Upstream-Ver)
> > (os-utils ver: 1.4 upstream: No-Upstream-Ver)
> > (oo-browser ver: 1.05 upstream: 4.08)
> > (ocaml ver: 0.06 upstream: 3.06)
> > (net-utils ver: 1.53 upstream: N/A)
> > (mmm-mode ver: 1.02 upstream: 0.4.7)
> > (misc-games ver: 1.19 upstream: No-Upstream-Ver)
> > (mine ver: 1.16 upstream: 1.9)
> > (mh-e ver: 1.31 upstream: 7.4.2)
> > (mew ver: 1.19 upstream: 1.94.2)
> > (mailcrypt ver: 2.14 upstream: 3.5.8)
> > (mail-lib ver: 1.79 upstream: No-Upstream-Ver)
> > (jde ver: 1.51 upstream: 2.3.3)
> > (ispell ver: 1.32 upstream: 3.6)
> > (ilisp ver: 1.34 upstream: 5.12.0)
> > (igrep ver: 1.15 upstream: 2.111)
> > (idlwave ver: 1.32 upstream: 5.1)
> > (ibuffer ver: 1.09 upstream: No-Upstream-Ver)
> > (hyperbole ver: 1.17 upstream: 5.0)
> > (hm--html-menus ver: 1.24 upstream: 5.9)
> > (gnats ver: 1.17 upstream: 3.101)
> > (games ver: 1.17 upstream: 1.04)
> > (fsf-compat ver: 1.15 upstream: No-Upstream-Ver)
> > (frame-icon ver: 1.11 upstream: No-Upstream-Ver)
> > (fortran-modes ver: 1.05 upstream: No-Upstream-Ver)
> > (forms ver: 1.15 upstream: 2.37)
> > (footnote ver: 1.16 upstream: 0.18x)
> > (eudc ver: 1.4 upstream: 1.32)
> > (eterm ver: 1.17 upstream: No-Upstream-Ver)
> > (eshell ver: 1.12 upstream: 2.4.1)
> > (escreen ver: 1.01 upstream: 1.16)
> > (emerge ver: 1.11 upstream: No-Upstream-Ver)
> > (elib ver: 1.11 upstream: 1.0)
> > (eieio ver: 1.05 upstream: 0.17)
> > (efs ver: 1.34 upstream: 1.24)
> > (edt ver: 1.14 upstream: No-Upstream-Ver)
> > (edit-utils ver: 2.38 upstream: No-Upstream-Ver)
> > (ediff ver: 1.72 upstream: 2.75)
> > (edebug ver: 1.22 upstream: No-Upstream-Ver)
> > (ecrypto ver: 0.2 upstream: 2.0)
> > (ecb ver: 1.22 upstream: 2.31)
> > (easypg ver: 1.01 upstream: 0.0.15)
> > (docbookide ver: 0.08 upstream: 0.1)
> > (dired ver: 1.18 upstream: 7.14)
> > (dictionary ver: 1.16 upstream: 1.8)
> > (debug ver: 1.18 upstream: No-Upstream-Ver)
> > (crisp ver: 1.15 upstream: 1.34)
> > (cookie ver: 1.15 upstream: No-Upstream-Ver)
> > (clearcase ver: 1.1 upstream: /main/laptop/165)
> > (cc-mode ver: 1.45 upstream: 5.30.10)
> > (calendar ver: 1.34 upstream: No-Upstream-Ver)
> > (calc ver: 1.26 upstream: 2.02fX3)
> > (c-support ver: 1.22 upstream: No-Upstream-Ver)
> > (build ver: 1.14 upstream: 2.02)
> > (apel ver: 1.33 upstream: 10.6)
> > (ada ver: 1.14 upstream: 2.27)
> > (Sun ver: 1.16 upstream: No-Upstream-Ver)
> >
> >
> >
> > Installed Modules:
> > -----------------
> >
> >
> > Features:
> > --------
> >
> > (mail-abbrevs xemacsbug shadow sendmail rfc822 rect cc-mode cc-fonts
> > cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
> > diff-mode tramp-smb tramp regexp-opt executable advice advice-preload
> > shell comint ring password format-spec timer-funcs trampver add-log
> > efs-cu font font-lock paren blink-paren image-mode
> > dired-faces dired-xemacs dired idm-mode idm-class-attribute-alist
> > idm-parser idm-scanner idm-strings idm-util idm-faces cus-face
> > disp-table skk-autoloads mule-ucs-autoloads mule-base-autoloads
> > lookup-autoloads leim-autoloads latin-unity-autoloads
> > egg-its-autoloads edict-autoloads zenirc-autoloads xwem-autoloads
> > xslt-process-autoloads xslide-autoloads xlib-autoloads xetla-autoloads
> > xemacs-devel-autoloads xemacs-base-autoloads x-symbol-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 riece-autoloads reftex-autoloads
> > re-builder-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 oo-browser-autoloads ocaml-autoloads
> > net-utils-autoloads mmm-mode-autoloads misc-games-autoloads
> > mine-autoloads mh-e-autoloads mew-autoloads mailcrypt-autoloads
> > mail-lib-autoloads jde-autoloads ispell-autoloads ilisp-autoloads
> > igrep-autoloads idlwave-autoloads ibuffer-autoloads
> > hyperbole-autoloads hm--html-menus-autoloads haskell-mode-autoloads
> > guided-tour-autoloads gnus-autoloads gnats-autoloads games-autoloads
> > fsf-compat-autoloads frame-icon-autoloads fortran-modes-autoloads
> > forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads
> > eshell-autoloads escreen-autoloads erc-autoloads emerge-autoloads
> > elib-autoloads eieio-autoloads efs-autoloads edt-autoloads
> > edit-utils-autoloads ediff-autoloads edebug-autoloads
> > ecrypto-autoloads ecb-autoloads easypg-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
> > Sun-autoloads modules-autoloads mule-autoloads auto-autoloads
> > auto-show fontl-hooks canna-leim tibetan slovenian czech romanian lao
> > devanagari indian ccl code-cmds gutter-items menubar-items x-menubar
> > mode-motion mouse behavior itimer auto-save lisp-mode easymenu
> > easy-mmode iso8859-1 page buff-menu lib-complete loadhist cus-file
> > derived newcomment rsz-minibuf env text-props frame obsolete cus-start
> > custom widget cl-extra cl cl-19 packages backquote unicode
> > lucid-scrollbars cut-buffer lucid-menubars athena-dialogs x
> > c-balloon-help tty-frames tty toolbar native-sound alsa-sound
> > scrollbar unix-processes multicast network-streams subprocesses
> > modules menu-accelerator-support menubar md5 xemacs xim mule gutter
> > tiff png gif jpeg xpm xbm lisp-float-type file-coding linux dialog
> > devices window-system base64)
> >
> >
> > Recent keystrokes:
> > -----------------
> >
> > down C-d C-x C-s button1 button1up C-a C-SPC up up
> > up up up up up up up up up up up up up up up up up
> > up up up up up C-w C-x C-s down down down down down
> > down down down down down down down down down down down
> > down down down down down down down down down down down
> > down down down down C-x 1 C-x C-f ~ / t m p TAB C-g
> > M-x e m a c TAB BS BS BS BS BS BS r e p TAB o TAB r
> > TAB x TAB RET
> >
> >
> > Recent messages (most recent first):
> > -----------------------------------
> >
> > Warning:
> >
> > Defaulting to the GNU Emacs-derived `sendmail.el' mail client. This facility,
> > while part of base XEmacs, is heinously underfeatured, and not going to get
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> > Loading xemacsbug...done
> > Loading xemacsbug...
> > Making completion list...
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> > Quit
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/rule/compile.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/rule/compile.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/rule/compile.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/rule/compile.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/rule/compile.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> > Wrote /mnt/misc/klr/Ods_Head_connect/bol42/lib/idm/object/userdata.c
> > Wrote /mnt/misc/klr/Ods_Head_connect/klrwm.diff
> >
> > _______________________________________________
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> --
> ?D?nde estar? ahora mi sobrino Yoghurtu Ngh?, que tuvo que huir
> precipitadamente de la aldea por culpa de la escasez de rinocerontes?
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