bug#81587: c-ts-mode narrowing disturbs the indirect buffer

Hello

Using c-ts-mode, cloning the buffer, narrowing the direct buffer, doing
some navigation in the indirect buffer, seem problematic. Like this for
example:

$ emacs -Q lib-src/asset-directory-tool.c

M-x c-ts-mode
C-s main_1 RET
C-x 4 c
C-x o
C-x n d
C-x o

We should now be in the indirect buffer after having narrowed the
main_1() function in the direct buffer.

Do some C-M-e and C-M-a and shortly observe

Error running timer ‘show-paren-function’: (args-out-of-range 3271)

If I skip the 'M-x c-ts-mode' step the problem is not reproduced.

I have a small edit in my local build, the following diff:

diff --git a/lisp/progmodes/c-ts-mode.el b/lisp/progmodes/c-ts-mode.el
index 5f064716a89..fa09cb21b34 100644
--- a/lisp/progmodes/c-ts-mode.el
+++ b/lisp/progmodes/c-ts-mode.el
@@ -503,7 +503,8 @@ c-ts-mode--simple-indent-rules
                                 "enum_specifier"
                                 "union_specifier"
                                 "function_declarator"
-                                "template_declaration")))
+                                "template_declaration"
+                                "concatenated_string")))
             standalone-parent 0)
            ;; This is for the trailing-star stype:  int *
            ;;                                       func()

But I was thinking it should not be related.

In GNU Emacs 31.0.91 (build 2, x86_64-pc-linux-gnu, GTK+ Version
 3.24.49, cairo version 1.18.4) of 2026-08-03 built on fliptop2
Repository revision: afda8c2779b297ada39379a38e0056cb2b21b1fb
Repository branch: emacs-31-local
Windowing system distributor 'The X.Org Foundation', version 11.0.12101016
System Description: Debian GNU/Linux 13 (trixie)

Configured using:
 'configure LDFLAGS=-L/usr/local/lib'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINERAMA XINPUT2 XPM
XRANDR GTK3 ZLIB

Important settings:
  value of $LC_MONETARY: sv_SE.UTF-8
  value of $LC_NUMERIC: sv_SE.UTF-8
  value of $LC_TIME: sv_SE.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Messages

Minor modes in effect:
  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
  blink-cursor-mode: t
  minibuffer-nonselected-mode: t
  minibuffer-regexp-mode: t
  buffer-read-only: 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 lisp-mnt 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
mule-util mm-decode mm-bodies mm-encode mailabbrev gmm-utils mailheader
sendmail mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils misearch multi-isearch cl-seq c++-ts-mode
c-ts-mode c-ts-common treesit comp-run comp-common rx byte-opt gv
bytecomp byte-compile vc-git diff-mode track-changes easy-mmode files-x
vc vc-dispatcher bug-reference thingatpt cc-mode cc-fonts cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
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 lcms2
dynamic-setting system-font-setting font-render-setting cairo gtk
x-toolkit xinput2 x multi-tty move-toolbar make-network-process
tty-child-frames native-compile emacs)

Memory information:
((conses 16 106727 11496) (symbols 48 9800 0) (strings 32 26864 3051)
 (string-bytes 1 969582) (vectors 16 15188)
 (vector-slots 8 206803 7143) (floats 8 33 2) (intervals 56 995 0)
 (buffers 1064 12))