bug#75209: 30.0.93; Emacs reader failed to read data in "/home/nlj/.cache/org-persist/gc-lock.eld"

["N. Jackson" <njackson@posteo.net>]

In the Emacs 30 pretest I have been getting the following warning
every few days:

  Warning (emacs): Emacs reader failed to read data in
  "/home/nlj/.cache/org-persist/gc-lock.eld". The error was: "End of
  file during parsing"

The `gc-lock' part suggests this might have something to do with
garbage collection, whereas `org-persist' suggests Org mode, but
I could find nothing in the Org manual about org-persist or about
gc-lock.

I don't know how to reproduce this.  The warning pops up seemingly
at random, often when the only visible window [before the *Warnings*
window appears] is NOT in Org mode.


In GNU Emacs 30.0.93 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.43, cairo version 1.18.0) of 2024-12-20 built on fedora
Windowing system distributor 'The X.Org Foundation', version 11.0.12014000
System Description: Fedora Linux 40 (Xfce)

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ
JPEG LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES
NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3
THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XIM XINPUT2 XPM GTK3
ZLIB

Important settings:
  value of $LANG: en_CA.utf8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix

Major mode: Text

Minor modes in effect:
  TeX-PDF-mode: t
  flyspell-mode: t
  recentf-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  savehist-mode: t
  save-place-mode: t
  electric-pair-mode: t
  display-time-mode: t
  display-battery-mode: t
  desktop-save-mode: t
  delete-selection-mode: t
  cua-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  minibuffer-regexp-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  global-visual-line-mode: t
  visual-line-mode: t
  transient-mark-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  temp-buffer-resize-mode: t
  abbrev-mode: t

Load-path shadows:
None found.

Features:
(shadow sort bbdb-message mail-extr emacsbug message puny rfc822 mml
mml-sec epa epg rfc6068 epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils mule-util cdlatex
reftex reftex-loaddefs reftex-vars dired-aux dired dired-loaddefs
emacs-news-mode bug-reference display-fill-column-indicator
display-line-numbers tex-mode font-latex latexenc preview
latex-mode-expansions latex edmacro latex-flymake flymake warnings
tex-ispell tex-style tex texmathp auctex yank-media oc-basic bibtex
iso8601 org-habit vc-git diff-mode track-changes easy-mmode
vc-dispatcher flyspell ispell kmacro mines derived cookie1 gamegrid
transpar expand-region text-mode-expansions the-org-mode-expansions
python-el-fgallina-expansions er-basic-expansions expand-region-core
expand-region-custom hydra advice lv compile text-property-search
org-clock comp-run comp-common org-agenda org-element org-persist
xdg org-id org-element-ast inline avl-tree generator org-refile org
org-macro org-pcomplete org-list org-footnote org-faces org-entities
time-date noutline outline ob-shell shell pcomplete ob-R ob-python
python project compat ob-plantuml ob-org ob-gnuplot ob-ditaa ob-calc
calc-store calc-trail calc-ext calc calc-loaddefs rect calc-macs
ob-awk ob-dot ob-maxima ob ob-tangle org-src sh-script smie treesit
executable ob-ref ob-lob ob-table ob-exp ob-comint comint ansi-osc
ansi-color ring ob-emacs-lisp ob-core ob-eval org-cycle org-table
org-keys oc org-loaddefs thingatpt find-func ol org-fold
org-fold-core org-compat org-version org-macs bbdb-anniv diary-lib
diary-loaddefs cal-menu calendar cal-loaddefs bbdb-com crm
mailabbrev bbdb bbdb-site timezone recentf tree-widget cus-edit pp
wid-edit ido format-spec modus-vivendi-theme modus-themes
yasnippet-classic-snippets cl-extra yasnippet help-mode savehist
saveplace company pcase elec-pair time battery dbus xml desktop
frameset delsel cua-base cus-load ace-window-autoloads
auctex-autoloads tex-site avy-autoloads bbdb-autoloads
cdlatex-autoloads company-autoloads csv-mode-autoloads
debbugs-autoloads ess-autoloads expand-region-autoloads
geiser-autoloads info orderless-autoloads rx sql-indent-autoloads
yasnippet-autoloads package browse-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie generate-lisp-file
url-domsuf url-util mailcap url-handlers url-parse auth-source
cl-seq eieio eieio-core cl-macs icons password-cache json subr-x map
byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc
iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd touch-screen tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode
lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock
syntax font-core term/tty-colors frame minibuffer nadvice seq simple
cl-generic indonesian philippine cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese composite emoji-zwj charscript charprop case-table
epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded
button loaddefs theme-loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads
dbusbind inotify dynamic-setting system-font-setting
font-render-setting cairo gtk x-toolkit xinput2 x multi-tty
move-toolbar make-network-process native-compile emacs)

Memory information:
((conses 16 874702 109492) (symbols 48 33757 0) (strings 32 141824 6883)
 (string-bytes 1 4270475) (vectors 16 88842)
 (vector-slots 8 1784278 36799) (floats 8 367 91)
 (intervals 56 24167 1981) (buffers 984 43))