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After commit b944841173... I can't start GUI Emacs.

I did:
./configure && make

And when I start Emacs with "emacs -Q" I get:
X protocol error: RenderBadPicture (invalid Picture parameter) on protocol
request 138
When compiled with GTK, Emacs cannot recover from X disconnects.
This is a GTK bug: https://gitlab.gnome.org/GNOME/gtk/issues/221
For details, see etc/PROBLEMS.
Backtrace:
./src/emacs(emacs_backtrace+0x41)[0x81bc731]
./src/emacs(terminate_due_to_signal+0x7f)[0x809958c]
./src/emacs[0x8099abd]
./src/emacs[0x8098b20]
./src/emacs[0x8167314]
./src/emacs[0x8167379]
/usr/lib/libX11.so.6(_XError+0x117)[0xb6f74ef7]
/usr/lib/libX11.so.6(+0x3f236)[0xb6f71236]
/usr/lib/libX11.so.6(+0x3f2cf)[0xb6f712cf]
/usr/lib/libX11.so.6(_XEventsQueued+0x81)[0xb6f71fd1]
/usr/lib/libX11.so.6(_XFlush+0x47)[0xb6f722f7]
/usr/lib/libX11.so.6(_XGetRequest+0x7c)[0xb6f756ac]
/usr/lib/libXext.so.6(XdbeDeallocateBackBufferName+0x5b)[0xb60e385b]
./src/emacs(tear_down_x_back_buffer+0x86)[0x8181446]
./src/emacs(x_free_frame_resources+0x49)[0x8176ed9]
./src/emacs[0x8177654]
./src/emacs(delete_frame+0x37e)[0x80b56de]
./src/emacs[0x8098aeb]
./src/emacs[0x8167314]
./src/emacs[0x8167379]
/usr/lib/libX11.so.6(_XError+0x117)[0xb6f74ef7]
/usr/lib/libX11.so.6(+0x3f236)[0xb6f71236]
/usr/lib/libX11.so.6(+0x3f2cf)[0xb6f712cf]
/usr/lib/libX11.so.6(_XReply+0x25c)[0xb6f726ec]
/usr/lib/libX11.so.6(XParseColor+0x1c9)[0xb6f608f9]
./src/emacs(x_parse_color+0xc7)[0x816e337]
./src/emacs(x_defined_color+0x71)[0x817f211]
./src/emacs[0x81612a4]
./src/emacs[0x816353e]
./src/emacs(face_at_buffer_position+0x2b7)[0x8165b47]
./src/emacs[0x80bdca5]
./src/emacs[0x80d7dbb]
./src/emacs[0x80d1396]
./src/emacs[0x80d9da7]
./src/emacs[0x80d7fae]
./src/emacs[0x80da04f]
./src/emacs(move_it_to+0x4c2)[0x80dc332]
./src/emacs(resize_mini_window+0x2ca)[0x80e53fa]
./src/emacs[0x80e604b]
./src/emacs[0x80c4d10]
./src/emacs[0x80ed195]


I'm not able to run GDB, but I bisected it to the following commit:
b944841173..: Håkon Flatval 2022-01-29 Add background transparency support
for GTK+Cairo
commit b944841173f12134e4c68d269d5b82b1820b2a40
Author: Håkon Flatval <hkon20@hotmail.com>
Date:   Sat Jan 29 16:13:06 2022 +0100

  Add background transparency support for GTK+Cairo


In particular, if I revert the hunk in select_visual, the problem seems
to go away.


In GNU Emacs 29.0.50 (build 24, i686-pc-linux-gnu, GTK+ Version 2.24.33,
cairo version 1.16.0)
 of 2022-02-04 built on tbb.theblackbeard.org
Repository revision: 35cd9197fc3bda7576b3c343d1183360067dccd2
Repository branch: HEAD
Windowing system distributor 'The X.Org Foundation', version 11.0.12010000
System Description: Slackware 14.2 i586 (post 14.2 -current)

Configured using:
 'configure LDFLAGS=-rdynamic'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON
LCMS2 LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND
SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XIM XPM GTK2 ZLIB

Important settings:
  value of $LC_COLLATE: C
  value of $LANG: en_US.utf8
  locale-coding-system: utf-8-unix

Major mode: Message

Minor modes in effect:
  mml-mode: t
  tooltip-mode: t
  global-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: message-do-auto-fill
  transient-mark-mode: t
  abbrev-mode: t

Load-path shadows:
/home/tbb/.emacs.d/elpa/transient-20200819.1133/transient hides
/home/tbb/code/emacs/emacs/lisp/transient

Features:
(shadow emacsbug sendmail mail-extr message yank-media rmc puny rfc822
mml mml-sec epa derived epg rfc6068 epg-config mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
modus-vivendi-theme modus-themes init-web company-web dash company-css
web-completion-data company edmacro kmacro pcase init-ext init-emms dbus
emms-librefm-stream emms-librefm-scrobbler emms-playlist-limit
emms-volume emms-volume-mixerctl emms-volume-pulse emms-volume-amixer
emms-i18n emms-history emms-score emms-stream-info
emms-metaplaylist-mode emms-bookmarks emms-cue emms-mode-line-icon
emms-browser sort emms-playlist-sort emms-last-played emms-player-xine
emms-player-mpd tq emms-playing-time emms-lyrics emms-url emms-streams
emms-show-all emms-tag-editor emms-mark emms-mode-line emms-cache
emms-info-exiftool emms-info-tinytag emms-info-metaflac
emms-info-opusinfo emms-info-ogginfo emms-info-mp3info emms-info
emms-later-do emms-playlist-mode emms-player-vlc emms-player-mpv
emms-player-mplayer emms-player-simple emms-source-playlist
emms-source-file locate dired dired-loaddefs emms-setup emms emms-compat
init-gnus gnus nnheader gnus-util range init-org org-clock org ob
ob-tangle ob-ref ob-lob ob-table ob-exp org-macro org-footnote org-src
ob-comint org-pcomplete pcomplete org-list org-faces org-entities
org-version ob-emacs-lisp ob-core ob-eval org-table oc-basic bibtex ol
rx org-keys oc org-compat advice org-macs org-loaddefs format-spec
find-func cal-menu calendar cal-loaddefs init-social newsticker
newst-treeview tree-widget wid-edit newst-plainview newst-reader
newst-ticker newst-backend iso8601 time-date xml init-octave init-rmail
undigest rmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
init-vc vc vc-dispatcher init-cc-mode init-c init-yasnippet init-eshell
eshell esh-cmd esh-ext esh-opt esh-proc esh-io esh-arg esh-module
esh-groups esh-util init-lisp slime compile text-property-search etags
fileloop generator xref project arc-mode archive-mode noutline outline
easy-mmode pp comint ansi-color ring hyperspec thingatpt init-elisp
init-global finder-inf init-package slime-autoloads info package
browse-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json map url-vars seq gv subr-x byte-opt bytecomp
byte-compile cconv cl-loaddefs cl-lib iso-transl tooltip 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 cl-generic 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 simple abbrev obarray cl-preloaded nadvice
button 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
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 8 418801 72363)
 (symbols 24 30139 5)
 (strings 16 130194 5004)
 (string-bytes 1 3637892)
 (vectors 8 49856)
 (vector-slots 4 1319110 112230)
 (floats 8 189 77)
 (intervals 28 481 0)
 (buffers 564 11))