[Bug: 21.4.15] VM mode and lazy lock don't interoperate

================================================================ Dear Bug Team! VM uses all available CPU cycles when lazy-lock is loaded, too. The situation: I start XEmacs with -vanilla, since I don't want site or personal configurations. I evaluate (add-hook 'font-lock-mode-hook 'turn-on-lazy-lock) (turn-on-font-lock) and call vm-visit-folder-other-frame with an existing mail folder. Then top shows that the xemacs process uses all available CPU time. (Well, of one CPU; I have a SMP system.) I tried to analyze which function causes this. Setting debug-on-quit to t and typing ^G just outputs that #'quit is called, no further information. Incidentially, typing ^G then often crashes XEmacs with the error message Fatal error: assertion failed, file eval.c, line 1886, abort() and no core dump. Removing 'turn-on-lazy-lock from 'font-lock-mode-hook doesn't change the behaviour, if it was turned on once. One needs to remove lazy-lock-pre-idle-fontify-windows from pre-idle-hook, then no such excessive CPU usage occurs any more. I had a look at lazy-lock-pre-idle-fontify-windows but couldn't see what caused the problem. So I decided to send a bug report instead... ;-) I hope this information can help to track down the error. Cheers, Joachim -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Joachim Schrod Email: jschrod(a)acm.org Kranichweg 1 Tel.: +49-6074-861532 63322 Rödermark, Germany Fax: +49-6074-861531 ================================================================ System Info to help track down your bug: --------------------------------------- uname -a: Linux galerkin 2.6.8.1 #1 Wed Oct 6 09:16:23 UTC 2004 i686 athlon i386 GNU/Linux ./configure 'i386-suse-linux' '--with-gcc' '--dynamic' '--rel-alloc' '--debug=no' '--error-checking=none' '--cflags=-O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -Wall -Wno-switch -pipe -O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -fno-strict-aliasing' '--ldflags=-s' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/X11R6/bin' '--datadir=/usr/share' '--archlibdir=/usr/lib/xemacs/21.4.15/i386-suse-linux' '--docdir=/usr/lib/xemacs/21.4.15/i386-suse-linux' '--lispdir=/usr/share/xemacs/21.4.15/lisp' '--pkgdir=/usr/share/xemacs/21.4.15/lisp' '--etcdir=/usr/share/xemacs/21.4.15/etc' '--statedir=/var/lib/xemacs' '--moduledir=/usr/lib/xemacs/21.4.15/i386-suse-linux/modules' '--infodir=/usr/share/xemacs/info' '--mandir=/usr/share/man/man1' '--with-database=gnudbm,berkdb' '--with-ncurses' '--with-tty=yes' '--with-site-lisp' '--with-sound=native' '--with-gpm' '--pdump' '--with-xpm' '--with-gif' '--with-tiff' '--with-jpeg' '--with-png' '--with-x' '--with-athena=3d' '--wit h-menubars=lucid' '--with-scrollbars=lucid' '--with-dialogs=athena' '--with-widgets=athena' '--x-includes=/usr/X11R6/include' '--x-libraries=/usr/X11R6/lib' '--with-mule' '--with-xim=xlib' '--with-xfs' '--with-clash-detection' '--with-ldap' '--with-pop' XEmacs 21.4.15 "Security Through Obscurity" configured for `i386-suse-linux'. Compilation / Installation: Source code location: /usr/src/packages/BUILD/xemacs-21.4.15 Installation prefix: /usr Operating system description file: `s/linux.h' Machine description file: `m/intel386.h' Compiler: gcc -O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -Wall -Wno-switch -pipe -O2 -march=i586 -mcpu=i686 -fmessage-length=0 -Wall -fno-strict-aliasing Compiler version: gcc (GCC) 3.3.4 (pre 3.3.5 20040809) Compiler specs file: /usr/lib/gcc-lib/i586-suse-linux/3.3.4/specs Relocating allocator for buffers: yes GNU version of malloc: yes - Using Doug Lea's new malloc from the GNU C Library. Need to guess glibc1/2/etc here Window System: Compiling in support for the X window system: - X Windows headers location: /usr/X11R6/include - X Windows libraries location: /usr/X11R6/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 ncurses. 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. Compiling in support for X-Face message headers. Sound: Compiling in support for sound (native). Databases: Compiling in support for Berkeley database. Compiling in support for GNU DBM. Compiling in support for LDAP. 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. - Using XFontSet to provide bilingual menubar. Compiling in support for Canna on Mule. Compiling in support for the WNN input method on Mule. Mail: Compiling in support for POP mail retrieval. Compiling in support for "dot-locking" mail spool file locking method. Other Features: Inhibiting IPv6 canonicalization at startup. Compiling in support for dynamic shared object modules. Using the new portable dumper. Load-Path Lisp Shadows: ---------------------- (/usr/share/xemacs/site-packages/lisp/flim/std11 /usr/share/xemacs/xemacs-packages/lisp/apel/std11 /usr/share/xemacs/site-packages/lisp/flim/sha1 /usr/share/xemacs/xemacs-packages/lisp/ecrypto/sha1 /usr/share/xemacs/site-packages/lisp/flim/sha1-el /usr/share/xemacs/xemacs-packages/lisp/ecrypto/sha1-el /usr/share/xemacs/site-packages/lisp/flim/md5 /usr/share/xemacs/xemacs-packages/lisp/ecrypto/md5 /usr/share/xemacs/site-packages/lisp/flim/md4 /usr/share/xemacs/xemacs-packages/lisp/ecrypto/md4 /usr/share/xemacs/site-packages/lisp/flim/hex-util /usr/share/xemacs/xemacs-packages/lisp/ecrypto/hex-util /usr/share/xemacs/site-packages/lisp/semi/smime /usr/share/xemacs/xemacs-packages/lisp/gnus/smime /usr/share/xemacs/site-packages/lisp/flim/smtpmail /usr/share/xemacs/xemacs-packages/lisp/mail-lib/smtpmail /usr/share/xemacs/site-packages/lisp/semi/pgg /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg /usr/share/xemacs/site-packages/lisp/semi/pgg-pgp5 /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg-pgp5 /usr/share/xemacs/site-packages/lisp/semi/pgg-pgp /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg-pgp /usr/share/xemacs/site-packages/lisp/semi/pgg-parse /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg-parse /usr/share/xemacs/site-packages/lisp/semi/pgg-gpg /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg-gpg /usr/share/xemacs/site-packages/lisp/semi/pgg-def /usr/share/xemacs/xemacs-packages/lisp/pgg/pgg-def /usr/share/xemacs/site-packages/lisp/flim/sasl /usr/share/xemacs/xemacs-packages/lisp/sasl/sasl /usr/share/xemacs/site-packages/lisp/flim/sasl-scram /usr/share/xemacs/xemacs-packages/lisp/sasl/sasl-scram /usr/share/xemacs/site-packages/lisp/flim/sasl-ntlm /usr/share/xemacs/xemacs-packages/lisp/sasl/sasl-ntlm /usr/share/xemacs/site-packages/lisp/flim/sasl-digest /usr/share/xemacs/xemacs-packages/lisp/sasl/sasl-digest /usr/share/xemacs/site-packages/lisp/flim/sasl-cram /usr/share/xemacs/xemacs-packages/lisp/sasl/sasl-cram /usr/share/xemacs/site-packages/lisp/flim/ntlm /usr/share/xemacs/xemacs-packages/lisp/sasl/ntlm /usr/share/xemacs/site-packages/lisp/flim/hmac-sha1 /usr/share/xemacs/xemacs-packages/lisp/sasl/hmac-sha1 /usr/share/xemacs/site-packages/lisp/flim/hmac-md5 /usr/share/xemacs/xemacs-packages/lisp/sasl/hmac-md5 /usr/share/xemacs/site-packages/lisp/flim/hmac-def /usr/share/xemacs/xemacs-packages/lisp/sasl/hmac-def /usr/share/xemacs/site-packages/lisp/flim/mel-u /usr/share/xemacs/xemacs-packages/lisp/tm/mel-u /usr/share/xemacs/site-packages/lisp/flim/mel-q /usr/share/xemacs/xemacs-packages/lisp/tm/mel-q /usr/share/xemacs/site-packages/lisp/flim/mel-g /usr/share/xemacs/xemacs-packages/lisp/tm/mel-g /usr/share/xemacs/site-packages/lisp/semi/signature /usr/share/xemacs/xemacs-packages/lisp/tm/signature /usr/share/xemacs/site-packages/lisp/semi/mime-setup /usr/share/xemacs/xemacs-packages/lisp/tm/mime-setup /usr/share/xemacs/site-packages/lisp/flim/mel /usr/share/xemacs/xemacs-packages/lisp/tm/mel /usr/share/xemacs/21.4.15/site-packages/lisp/term/gnome /usr/share/xemacs/21.4.15/lisp/gnome /usr/share/xemacs/xemacs-packages/lisp/build/build-report /usr/share/xemacs/21.4.15/lisp/build-report) Installed XEmacs Packages: ------------------------- (zenirc ver: 1.15 upstream: 2.112) (xslt-process ver: 1.11 upstream: 1.2.1) (xslide ver: 1.09 upstream: 0.2.2) (xemacs-devel ver: 1.61 upstream: No-Upstream-Ver) (xemacs-base ver: 1.84 upstream: No-Upstream-Ver) (x-symbol ver: 1.09 upstream: 4.5.1) (w3 ver: 1.29 upstream: 4.0pre47) (vm ver: 7.18 upstream: 7.17) (viper ver: 1.37 upstream: 3.09) (view-process ver: 1.13 upstream: 2.4) (vhdl ver: 1.18 upstream: 3.31.20) (vc-cc ver: 1.22 upstream: No-Upstream-Ver) (vc ver: 1.38 upstream: No-Upstream-Ver) (tramp ver: 1.17 upstream: 2.0.35) (tpu ver: 1.14 upstream: 4.2X) (tooltalk ver: 1.15 upstream: No-Upstream-Ver) (tm ver: 1.37 upstream: No-Upstream-Ver) (time ver: 1.14 upstream: 1.17) (textools ver: 1.15 upstream: No-Upstream-Ver) (text-modes ver: 1.73 upstream: No-Upstream-Ver) (texinfo ver: 1.25 upstream: No-Upstream-Ver) (supercite ver: 1.2 upstream: 3.55x3) (strokes ver: 1.1 upstream: No-Upstream-Ver) (speedbar ver: 1.27 upstream: 0.14beta4) (sounds-wav ver: 1.12 upstream: No-Upstream-Ver) (sounds-au ver: 1.12 upstream: No-Upstream-Ver) (sml-mode ver: 0.11 upstream: 3.9.5) (slider ver: 1.15 upstream: 0.3x1) (sieve ver: 1.15 upstream: No-Upstream-Ver) (sh-script ver: 1.18 upstream: 2.0e) (sgml ver: 1.11 upstream: No-Upstream-Ver) (semantic ver: 1.18 upstream: 1.4.2) (scheme ver: 1.14 upstream: No-Upstream-Ver) (sasl ver: 1.14 upstream: 1.14.4) (ruby-modes ver: 1.02 upstream: 1.6.8) (rmail ver: 1.14 upstream: No-Upstream-Ver) (riece ver: 1.14 upstream: 0.1.7) (reftex ver: 1.33 upstream: 4.21) (python-modes ver: 1.03 upstream: No-Upstream-Ver) (psgml-dtds ver: 1.03 upstream: No-Upstream-Ver) (psgml ver: 1.42 upstream: 1.3.1) (ps-print ver: 1.09 upstream: 6.5.6) (prog-modes ver: 1.94 upstream: No-Upstream-Ver) (pgg ver: 1.04 upstream: 0.1) (perl-modes ver: 1.05 upstream: No-Upstream-Ver) (pcomplete ver: 1.03 upstream: 1.1.6) (pcl-cvs ver: 1.65 upstream: R-2_9_9) (pc ver: 1.26 upstream: No-Upstream-Ver) (os-utils ver: 1.35 upstream: No-Upstream-Ver) (ocaml ver: 0.05 upstream: 3.06) (net-utils ver: 1.38 upstream: N/A) (mmm-mode ver: 1.01 upstream: 0.4.7) (misc-games ver: 1.18 upstream: No-Upstream-Ver) (mine ver: 1.16 upstream: 1.9) (mh-e ver: 1.28 upstream: 7.4.2) (mew ver: 1.18 upstream: 1.94.2) (mailcrypt ver: 2.14 upstream: 3.5.8) (mail-lib ver: 1.64 upstream: No-Upstream-Ver) (liece ver: 1.13 upstream: 1.4.9) (jde ver: 1.46 upstream: 2.3.2) (ispell ver: 1.29 upstream: 3.6) (ilisp ver: 1.33 upstream: 5.12.0) (igrep ver: 1.12 upstream: 2.95) (idlwave ver: 1.31 upstream: 5.1) (ibuffer ver: 1.09 upstream: No-Upstream-Ver) (hm--html-menus ver: 1.23 upstream: 5.9) (haskell-mode ver: 1.06 upstream: 1.44) (gnus ver: 1.79 upstream: 5.10.6) (gnats ver: 1.16 upstream: 3.101) (general-docs ver: 1.01 upstream: No-Upstream-Ver) (games ver: 1.15 upstream: 1.04) (fsf-compat ver: 1.14 upstream: No-Upstream-Ver) (frame-icon ver: 1.11 upstream: No-Upstream-Ver) (fortran-modes ver: 1.03 upstream: No-Upstream-Ver) (forms ver: 1.15 upstream: 2.37) (footnote ver: 1.16 upstream: 0.18x) (eudc ver: 1.39 upstream: 1.32) (eterm ver: 1.15 upstream: No-Upstream-Ver) (ess ver: 1.07 upstream: 5.1.21) (eshell ver: 1.06 upstream: 2.4.1) (erc ver: 0.05 upstream: Version 4.0 Revision: 1.608) (emerge ver: 1.11 upstream: No-Upstream-Ver) (elib ver: 1.11 upstream: 1.0) (eieio ver: 1.05 upstream: 0.17) (efs ver: 1.32 upstream: 1.22) (edt ver: 1.13 upstream: No-Upstream-Ver) (edit-utils ver: 2.11 upstream: No-Upstream-Ver) (ediff ver: 1.49 upstream: 2.75) (edebug ver: 1.2 upstream: No-Upstream-Ver) (ecrypto ver: 0.16 upstream: 2.0) (ecb ver: 1.14 upstream: 2.11) (docbookide ver: 0.07000000000000001 upstream: 0.1) (dired ver: 1.15 upstream: 7.11) (dictionary ver: 1.12 upstream: 1.8) (debug ver: 1.17 upstream: No-Upstream-Ver) (crisp ver: 1.14 upstream: 1.34) (cookie ver: 1.15 upstream: No-Upstream-Ver) (clearcase ver: 1.08 upstream: No-Upstream-Ver) (cc-mode ver: 1.42 upstream: 5.30.8) (calendar ver: 1.23 upstream: No-Upstream-Ver) (calc ver: 1.24 upstream: 2.02fX3) (c-support ver: 1.19 upstream: No-Upstream-Ver) (build ver: 1.14 upstream: 2.02) (bbdb ver: 1.24 upstream: 2.34) (auctex ver: 1.36 upstream: 11.13) (apel ver: 1.27 upstream: 10.2) (ada ver: 1.14 upstream: 2.27) (Sun ver: 1.15 upstream: No-Upstream-Ver) (skk ver: 1.23 upstream: 10.62a) (mule-ucs ver: 1.05 upstream: 0.84) (mule-base ver: 1.46 upstream: No-Upstream-Ver) (lookup ver: 1.14 upstream: 1.0) (locale ver: 1.21 upstream: No-Upstream-Ver) (leim ver: 1.22 upstream: No-Upstream-Ver) (latin-unity ver: 1.09 upstream: 1.09) (egg-its ver: 1.27 upstream: No-Upstream-Ver) (edict ver: 1.16 upstream: 0.9.9) Installed Modules: ----------------- Features: -------- (mail-abbrevs xemacsbug shadow sendmail rfc822 x-compose zenirc-autoloads xslt-process-autoloads xslide-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 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 general-docs-autoloads games-autoloads fsf-compat-autoloads frame-icon-autoloads fortran-modes-autoloads forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads ess-autoloads eshell-autoloads erc-autoloads emerge-autoloads elib-autoloads eieio-autoloads efs-autoloads edt-autoloads edit-utils-autoloads ediff-autoloads ediff-hook 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 Sun-autoloads skk-autoloads mule-ucs-autoloads mule-base-autoloads lookup-autoloads locale-autoloads leim-autoloads latin-unity-autoloads egg-its-autoloads edict-autoloads w3m-autoloads w3m-load semi-autoloads flim-autoloads lisp-autoloads disp-table loadhist auto-show fontl-hooks x-iso8859-1 canna-leim slovenian czech romanian ccl mule-help code-cmds gutter-items menubar-items x-menubar mode-motion mouse itimer auto-save lisp-mode easymenu iso8859-1 page buff-menu lib-complete cus-file derived frame text-props obsolete cus-start custom widget cl-extra mini-cl cl cl-19 packages backquote very-early-lisp CANNA file-coding wnn mule lucid-scrollbars cut-buffer lucid-menubars athena-dialogs x c-balloon-help tty-frames tty toolbar native-sound scrollbar unix-processes multicast network-streams subprocesses modules menu-accelerator-support menubar berkeley-db dbm md5 xemacs xim i18n2 gutter tiff png gif jpeg xface xpm xbm lisp-float-type linux dialog devices window-system base64) Recent keystrokes: ----------------- M-x r e p udiaeresis o BS BS o TAB r t - x e TAB R ET Recent messages (most 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