GNU bug report logs - #32961
27.0.50; Segfault

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Zach Shaftel <zshaftel <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; Segfault
Date: Sun, 07 Oct 2018 00:51:01 -0400

A very simple, but sort of amusing, bug. Evaluating `(signal nil
nil)` causes an instant segfault. Observed in both a git build of
Emacs, built on September 28th, and with version 26.1 installed via
pacman, called with 'emacs -Q'. Eval'ed with `lispy-eval' in the git
build, and with 'C-x C-e' in 26.1.


In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.1)
 of 2018-09-28 built on zachbook
Repository revision: 06e2814e1f3a80d247675319d3c438989592fb06
Windowing system distributor 'The X.Org Foundation', version 11.0.12001000
System Description: Arch Linux

Recent messages:
Building bind-chord...done
Building use-package-chords...done
Turning on magit-auto-revert-mode...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Quit
Kill ring is empty
"/home/zach/.emacs.d/init.el"
Loading /home/zach/.emacs.d/recentf...done
Cleaning up the recentf list...done (0 removed)
(No files need saving)

Configured using:
 'configure --with-imagemagick
 PKG_CONFIG_PATH=/usr/lib/imagemagick6/pkgconfig'

Configured features:
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NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LIBSYSTEMD JSON LCMS2
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nxml-mode nxml-outln nxml-rap html-mode-expansions
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mc-mark-more multiple-cursors-core rect fancy-narrow-autoloads
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epkg-utils epkg-list epkg-desc epkg closql closql-autoloads
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treemacs-tag-follow-mode treemacs-follow-mode
treemacs-filewatch-mode treemacs-tags treemacs-faces filenotify
treemacs-branch-creation treemacs-async treemacs-icons
treemacs-workspaces treemacs-structure treemacs-visuals
treemacs-fringe-indicator treemacs-impl treemacs-macros
treemacs-customization ace-window pfuture pfuture-autoloads
window-purpose-autoloads imenu-list window-purpose
window-purpose-fixes window-purpose-prefix-overload
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eshell-prompt-extras-autoloads em-dirs em-ls
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time mu4e-maildirs-extension mu4e-maildirs-extension-autoloads
org-mu4e mu4e desktop frameset mu4e-speedbar speedbar sb-image
ezimage dframe mu4e-main mu4e-view mu4e-headers mu4e-compose
mu4e-context mu4e-draft mu4e-actions rfc2368 mu4e-mark mu4e-message
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google-translate-default-ui google-translate-core-ui
google-translate-core google-translate-tk deft-autoloads
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org-caldav-autoloads icalendar url-dav org-eww org-w3m
anki-editor-autoloads anki-editor org-variable-pitch-autoloads
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org-protocol-capture-html org-protocol-capture-html-autoloads
org-protocol org-bullets-autoloads org-autolist-autoloads
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ox-html table ox-ascii ox-publish ox esh-var esh-cmd esh-opt esh-io
esh-ext esh-proc esh-arg esh-groups eshell esh-module esh-mode
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diff-mode org-id ob-clojure calfw-org org-capture org-element
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org-footnote org-pcomplete org-list org-faces org-entities tempo
nnir gnus-sum gnus-group gnus-undo gnus-start gnus-cloud nnimap
nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int gnus-range
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ob-table ob-keys ob-exp ob-comint ob-core ob-eval org-compat
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semantic/wisent semantic/wisent/wisent transmission-autoloads
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calc-macs finder-inf soundklaus-autoloads soundklaus-collection
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emms-info-mp3info tq emms-mode-line emms-url emms-librefm-scrobbler
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ivy-posframe-autoloads posframe posframe-autoloads
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epg epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
smtpmail auth-source password-cache json map sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils dired-aux dired
dired-loaddefs async exwm-surf-autoloads exwm-systemtray
my-exwm-config exwm-autoloads xcb-systemtray xcb-xembed edmacro ido
seq exwm exwm-input xcb-keysyms exwm-manage exwm-floating xcb-cursor
exwm-layout exwm-workspace exwm-core kmacro server xelb-autoloads
xcb-xv xcb-shm xcb-xlib xcb-ewmh xcb-sync xcb-randr xcb-icccm xcb
xcb-xkb xcb-xfixes xcb-shape xcb-render xcb-xproto xcb-types
xcb-debug pp eieio eieio-core eieio-loaddefs cl-generic-autoloads
paren battery cus-start cus-load key-chord-autoloads advice
diminish-autoloads use-package-autoloads use-package-ensure
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bind-key use-package-core derived bind-key-autoloads cl-seq f
f-autoloads s s-autoloads dash dash-autoloads cl straight-autoloads
info easy-mmode pcase rx byte-opt elec-pair compile comint
ansi-color ring checkdoc thingatpt autoload radix-tree lisp-mnt
cl-extra help-mode easymenu straight subr-x cl-macs gv cl-loaddefs
cl-lib bytecomp byte-compile cconv time-date mule-util 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 menu-bar rfn-eshadow
isearch timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core term/tty-colors frame 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 minibuffer 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
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 3065243 122177)
 (symbols 48 163037 3)
 (strings 32 576128 39129)
 (string-bytes 1 25231615)
 (vectors 16 157997)
 (vector-slots 8 3476543 190080)
 (floats 8 1778 607)
 (intervals 56 3708 0)
 (buffers 992 28))

Message #10 received at 32961-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Zach Shaftel <zshaftel <at> gmail.com>
Cc: 32961-done <at> debbugs.gnu.org
Subject: Re: bug#32961: 27.0.50; Segfault
Date: Sun, 07 Oct 2018 17:46:36 +0300

> From: Zach Shaftel <zshaftel <at> gmail.com>
> Date: Sun, 07 Oct 2018 00:51:01 -0400
> 
> 
> A very simple, but sort of amusing, bug. Evaluating `(signal nil
> nil)` causes an instant segfault. Observed in both a git build of
> Emacs, built on September 28th, and with version 26.1 installed via
> pacman, called with 'emacs -Q'. Eval'ed with `lispy-eval' in the git
> build, and with 'C-x C-e' in 26.1.

Thanks, fixed.

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