* bug#31362: 24.5; Crash after eval a form
@ 2018-05-04 7:51 Tino Calancha
2018-05-04 9:13 ` Andreas Schwab
2022-04-04 17:24 ` bug#31362: GC stack overflow fixed Mattias Engdegård
0 siblings, 2 replies; 4+ messages in thread
From: Tino Calancha @ 2018-05-04 7:51 UTC (permalink / raw)
To: 31362; +Cc: paul eggert, stefan monnier
X-Debbugs-CC: Paul Eggert <eggert@cs.ucla.edu>, Stefan Monnier <monnier@iro.umontreal.ca>
emacs -Q
;; Emacs crash after evaluate the following form:
(let* ((lst (list 'x))
(form (cons 'die
(list 'w '(pop lst)))))
(while lst
(setq form
(cons 'die
(cons form
(list '(pop lst))))))
form)
;; Same behavior in Emacs 25, 26 and master.
;; The crash seems to happen because of the following assert (lisp.h:1468) fails:
INLINE ptrdiff_t
SCHARS (Lisp_Object string)
{
ptrdiff_t nchars = XSTRING (string)->u.s.size;
eassume (0 <= nchars);
return nchars;
}
In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
of 2017-09-12 on hullmann, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11902000
System Description: Debian GNU/Linux 9.4 (stretch)
Configured using:
`configure --build x86_64-linux-gnu --prefix=/usr
--sharedstatedir=/var/lib --libexecdir=/usr/lib
--localstatedir=/var/lib --infodir=/usr/share/info
--mandir=/usr/share/man --with-pop=yes
--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp
--without-gnutls --build x86_64-linux-gnu --prefix=/usr
--sharedstatedir=/var/lib --libexecdir=/usr/lib
--localstatedir=/var/lib --infodir=/usr/share/info
--mandir=/usr/share/man --with-pop=yes
--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp
--without-gnutls --with-x=yes --with-x-toolkit=gtk3
--with-toolkit-scroll-bars 'CFLAGS=-g -O2
-fdebug-prefix-map=/build/emacs24-24.5+1=. -fstack-protector-strong
-Wformat -Werror=format-security -Wall -fno-PIE' 'CPPFLAGS=-Wdate-time
-D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-z,relro -no-pie''
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Emacs-Lisp
Minor modes in effect:
tooltip-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
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util help-fns mail-prsvr mail-utils time-date tooltip electric
uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer 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 make-network-process
dbusbind gfilenotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)
Memory information:
((conses 16 71508 4550)
(symbols 48 17556 0)
(miscs 40 38 88)
(strings 32 9162 4602)
(string-bytes 1 250704)
(vectors 16 8910)
(vector-slots 8 383182 18774)
(floats 8 63 238)
(intervals 56 244 4)
(buffers 960 12))
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#31362: 24.5; Crash after eval a form
2018-05-04 7:51 bug#31362: 24.5; Crash after eval a form Tino Calancha
@ 2018-05-04 9:13 ` Andreas Schwab
2018-05-04 9:51 ` Noam Postavsky
2022-04-04 17:24 ` bug#31362: GC stack overflow fixed Mattias Engdegård
1 sibling, 1 reply; 4+ messages in thread
From: Andreas Schwab @ 2018-05-04 9:13 UTC (permalink / raw)
To: Tino Calancha; +Cc: 31362, paul eggert, stefan monnier
On Mai 04 2018, Tino Calancha <tino.calancha@gmail.com> wrote:
> ;; Emacs crash after evaluate the following form:
> (let* ((lst (list 'x))
> (form (cons 'die
> (list 'w '(pop lst)))))
> (while lst
> (setq form
> (cons 'die
> (cons form
> (list '(pop lst))))))
> form)
This creates a degenerate list, causing stack overflow during GC.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#31362: 24.5; Crash after eval a form
2018-05-04 9:13 ` Andreas Schwab
@ 2018-05-04 9:51 ` Noam Postavsky
0 siblings, 0 replies; 4+ messages in thread
From: Noam Postavsky @ 2018-05-04 9:51 UTC (permalink / raw)
To: Andreas Schwab; +Cc: 31362, paul eggert, stefan monnier, Tino Calancha
forcemerge 2099 31362
retitle 2099 stack overflow in GC when creating large nested object
quit
Andreas Schwab <schwab@linux-m68k.org> writes:
> On Mai 04 2018, Tino Calancha <tino.calancha@gmail.com> wrote:
>
>> ;; Emacs crash after evaluate the following form:
>> (let* ((lst (list 'x))
>> (form (cons 'die
>> (list 'w '(pop lst)))))
>> (while lst
>> (setq form
>> (cons 'die
>> (cons form
>> (list '(pop lst))))))
>> form)
>
> This creates a degenerate list, causing stack overflow during GC.
Right, this is just a more complicated version of #2099.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#31362: GC stack overflow fixed
2018-05-04 7:51 bug#31362: 24.5; Crash after eval a form Tino Calancha
2018-05-04 9:13 ` Andreas Schwab
@ 2022-04-04 17:24 ` Mattias Engdegård
1 sibling, 0 replies; 4+ messages in thread
From: Mattias Engdegård @ 2022-04-04 17:24 UTC (permalink / raw)
To: 31362-done, 46900-done; +Cc: Noam Postavsky, Pip Cet, Tino Calancha
Now that bug#54698 is resolved, we can close bug#31362 and bug#46900 which seem to have been about that, essentially.
If that didn't do it for you, please let us know.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-04-04 17:24 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2018-05-04 7:51 bug#31362: 24.5; Crash after eval a form Tino Calancha
2018-05-04 9:13 ` Andreas Schwab
2018-05-04 9:51 ` Noam Postavsky
2022-04-04 17:24 ` bug#31362: GC stack overflow fixed Mattias Engdegård
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