bug#40187: 28.0.50; [feature/native-comp] File mode specification error when opening .tex file

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bug#40187: 28.0.50; [feature/native-comp] File mode specification error when opening .tex file

Sébastien Miquel
Hi,

I've been trying out the native-comp branch.

With emacs -Q, opening any file test.tex gives the following error: File
mode specification error: (error List nesting exceeds 'max-lisp-eval-depth).



In GNU Emacs 28.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version
3.24.14, cairo version 1.17.3)
  of 2020-03-20
Repository revision: 64a6709f648f4f6363e1d9d63cc4fc33ff5e0340
Repository branch: makepkg
Windowing system distributor 'The X.Org Foundation', version 11.0.12007000
System Description: Arch Linux

Configured using:
  'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
  --localstatedir=/var --mandir=/usr/share/man --with-gameuser=:games
  --with-sound=alsa --with-modules --without-gconf --without-gsettings
  --enable-link-time-optimization --with-x-toolkit=gtk3 --without-xaw3d
  --without-m17n-flt --with-cairo --without-compress-install
  --with-nativecomp 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe
  -fno-plt -g -flto -fuse-linker-plugin -s -fuse-ld=gold'
  CPPFLAGS=-D_FORTIFY_SOURCE=2
  LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
XPM JPEG TIFF GIF PNG RSVG CAIRO SOUND GPM DBUS GLIB NOTIFY INOTIFY ACL
LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ LIBOTF ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON
PDUMPER LCMS2 GMP

Important settings:
   value of $LC_ALL: en_US.UTF-8
   value of $LANG: en_US.UTF-8
   locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
   shell-dirtrack-mode: t
   tooltip-mode: t
   global-eldoc-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
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
epg-config gnus-util rmail rmail-loaddefs text-property-search seq
byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils time-date subr-x
cl-loaddefs cl-lib tex-mode compile shell pcomplete comint ansi-color
ring latexenc tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type 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 elisp-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu 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 charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote threads dbusbind
inotify lcms2 dynamic-setting font-render-setting cairo move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)




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bug#40187: 28.0.50; [feature/native-comp] File mode specification error when opening .tex file

Andrea Corallo
Sébastien Miquel <[hidden email]> writes:

> Hi,
>
> I've been trying out the native-comp branch.
>
> With emacs -Q, opening any file test.tex gives the following error:
> File mode specification error: (error List nesting exceeds
> 'max-lisp-eval-depth).

Hi Sébastien,

I've recently incurred the same.  Evaluating tex-mode.el solves the
issue therefore I assume the trouble has to be investigate in that file.

Thanks for reporting, it's good we have it listed here.

  Andrea

--
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bug#40187: 28.0.50; [feature/native-comp] File mode specification error when opening .tex file

Andrea Corallo
I looked into it and reduced the bug.

The following code

#+BEGIN_SRC elisp

(defun foo ()
  (message "AAA"))

(defalias 'bar (symbol-function 'foo))

(defun foo ()
  (message "BBB"))

(bar)

#+END_SRC

when compiled by the native compiler prints "BBB" that is clearly
totally wrong.  Actually after loading it any following evaluation of
(bar) prints "BBB".

Interesting we can have two functions with the same name, haven't
thought it... small details :) :)

Going to fix it by the weekend.

  Andrea

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bug#40187: 28.0.50; [feature/native-comp] File mode specification error when opening .tex file

Andrea Corallo
I believe this is fixed by d5f6dc131b
"Prevent collisions in C namespace and function shadowing".

BTW also 6075a7c5 removes the trick within latex-mode.el that highlighted
the compiler bug.

Closing

--
[hidden email]