bug#62571: 30.0.50; Crash on entering 20x enlarged number

[Jean Louis]

Here is how to reproduce:

1. emacs -Q
2. C-x + and repeat pressing + for 20 times in total
3. I press 6, as I wanted to show to child how number 6 looks like
4. X Server crashed, I guess Emacs too, I have no idea

I did not test it with other numbers but 6, but it can easily be that X
Window server will crash with letters as well.

It is very repeatable. I am using Lucid built. Font used by default is
here below, if that matter.

             position: 5 of 145 (3%), column: 4
            character: h (displayed as h) (codepoint 104, #o150, #x68)
              charset: ascii (ASCII (ISO646 IRV))
code point in charset: 0x68
               script: latin
               syntax: w        which means: word
             category: .:Base, L:Strong L2R, a:ASCII, l:Latin, r:Roman
             to input: type "C-x 8 RET 68" or "C-x 8 RET LATIN SMALL LETTER H"
          buffer code: #x68
            file code: #x68 (encoded by coding system utf-8-unix)
              display: by this font (glyph code):
    ftcrhb:-ADBO-Source Code 
Pro-regular-normal-normal-*-17-*-*-*-m-0-iso10646-1 (#x23)

Character code properties: customize what to show
  name: LATIN SMALL LETTER H
  general-category: Ll (Letter, Lowercase)
  decomposition: (104) ('h')

There are text properties here:
  face                 font-lock-comment-face
  fontified            t




In GNU Emacs 30.0.50 (build 9, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.17.6, Xaw3d scroll bars) of 2023-02-23 built on
 protected.rcdrun.com
Repository revision: 6411a9af03a4eb1a82db47a9642b11ba7edaaaf0
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101006
System Description: Parabola GNU/Linux-libre

Configured using:
 'configure --with-x-toolkit=lucid --with-mailutils'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY
PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
TREE_SITTER WEBP X11 XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: @im=exwm-xim
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date subr-x mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils 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 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 lcms2
dynamic-setting system-font-setting font-render-setting cairo x-toolkit
xinput2 x multi-tty make-network-process emacs)

Memory information:
((conses 16 39119 7869)
 (symbols 48 5219 2)
 (strings 32 14185 1749)
 (string-bytes 1 397783)
 (vectors 16 10442)
 (vector-slots 8 158960 13134)
 (floats 8 40 19)
 (intervals 56 255 0)
 (buffers 984 11))

-- 
Jean

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