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bug#74241: closed (31.0.50; Using eww to view HTML page aborts with char


From: GNU bug Tracking System
Subject: bug#74241: closed (31.0.50; Using eww to view HTML page aborts with character.h:380: assertion failed: 0xC0 <= c)
Date: Fri, 08 Nov 2024 04:12:01 +0000

Your message dated Fri, 08 Nov 2024 09:40:41 +0530
with message-id <87pln6tlfi.fsf@gmail.com>
and subject line Re: bug#74241: 31.0.50; Using eww to view HTML page aborts 
with character.h:380: assertion failed: 0xC0 <= c
has caused the debbugs.gnu.org bug report #74241,
regarding 31.0.50; Using eww to view HTML page aborts with character.h:380: 
assertion failed: 0xC0 <= c
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs@gnu.org.)


-- 
74241: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=74241
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems
--- Begin Message --- Subject: 31.0.50; Using eww to view HTML page aborts with character.h:380: assertion failed: 0xC0 <= c Date: Thu, 07 Nov 2024 21:26:45 +0530 User-agent: Gnus/5.13 (Gnus v5.13)
Trying to use eww-open-file to visit the attached HTML file aborts Emacs
with the following printed to stderr:

    character.h:380: Emacs fatal error: assertion failed: 0xC0 <= c

To reproduce,

    1. Save the attached "buggy_html.html" file somewhere
    2. emacs -Q
    3. M-x eww-open-file RET /wherever/buggy_html.html RET
    4. Wait for Emacs to abort

Visiting the file with find-file doesn't abort.  Neither does using
shr-render-buffer to render the buffer:

    (with-temp-buffer
      (insert-file-contents "buggy_html.html")
      (shr-render-buffer (current-buffer)))
    
I am also attaching the backtrace in the file "eww-backtrace."

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Attachment: eww-backtrace
Description: Binary data

In GNU Emacs 31.0.50 (build 21, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.18.0, Xaw scroll bars) of 2024-11-07 built on astatine
Repository revision: 6a2e49e53f1072bf1b41e113531627024d8b9845
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101011
System Description: Debian GNU/Linux trixie/sid

Configured using:
 'configure --with-sound=alsa --with-x-toolkit=lucid --without-xaw3d
 --without-gconf --without-libsystemd --with-cairo
 --enable-checking=yes,glyphs --enable-check-lisp-object-type
 'CFLAGS=-O0 -g3''

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

Important settings:
  value of $LC_MONETARY: ta_IN.UTF-8
  value of $LC_NUMERIC: ta_IN.UTF-8
  value of $LANG: en_GB.UTF-8
  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
  minibuffer-regexp-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 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 x-toolkit
xinput2 x multi-tty move-toolbar make-network-process emacs)

Memory information:
((conses 16 39465 9095) (symbols 48 5381 0) (strings 32 13400 1852)
 (string-bytes 1 312141) (vectors 16 9401)
 (vector-slots 8 113196 9024) (floats 8 23 3) (intervals 56 268 0)
 (buffers 984 10))

--- End Message ---
--- Begin Message --- Subject: Re: bug#74241: 31.0.50; Using eww to view HTML page aborts with character.h:380: assertion failed: 0xC0 <= c Date: Fri, 08 Nov 2024 09:40:41 +0530 User-agent: Gnus/5.13 (Gnus v5.13)
[வியாழன் நவம்பர் 07, 2024] Eli Zaretskii wrote:

>> From: Visuwesh <visuweshm@gmail.com>
>> Date: Thu, 07 Nov 2024 21:26:45 +0530
>> 
>> Trying to use eww-open-file to visit the attached HTML file aborts Emacs
>> with the following printed to stderr:
>> 
>>     character.h:380: Emacs fatal error: assertion failed: 0xC0 <= c
>
> Thanks, it was a 13-year old thinko (of yours truly), now fixed on the
> release branch.

Thanks for the quick fix, I can confirm that it works on my end.  I'm
closing the bug thusly.


--- End Message ---

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