GNU bug report logs - #48433
28.0.50; Emacs Core Dump when trying to visit file

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

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: bug-gnu-emacs <at> gnu.org
Cc: Alan Mackenzie <acm <at> muc.de>
Subject: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 09:39:09 +0100

Hi Alan,

When trying to visit a file on recent Emacs builds on master (Ubuntu 20.10), Emacs
compiled with native comp crashes with core dump, with the following
error on stderr:

```
 Backtrace:
emacs(+0x17fb96)[0x55bae120fb96]
emacs(+0x47aab)[0x55bae10d7aab]
emacs(+0x48266)[0x55bae10d8266]
emacs(+0x48b7e)[0x55bae10d8b7e]
/usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/window-0d1b8b93-edcead22.eln(F6d696e696275666665722d77696e646f772d6163746976652d70_minibuffer_window_active_p_0+0x24)[0x7f6c7dd64bc4]
emacs(+0x1faf13)[0x55bae128af13]
emacs(+0x24993e)[0x55bae12d993e]
emacs(+0x1ff4b7)[0x55bae128f4b7]
emacs(+0x1fad61)[0x55bae128ad61]
emacs(+0x1fe502)[0x55bae128e502]
emacs(+0x1faf13)[0x55bae128af13]
emacs(+0x1faf85)[0x55bae128af85]
emacs(+0x186591)[0x55bae1216591]
emacs(+0x19accc)[0x55bae122accc]
emacs(+0x19af1b)[0x55bae122af1b]
emacs(+0x19bfdd)[0x55bae122bfdd]
emacs(+0x1fcd52)[0x55bae128cd52]
emacs(+0x1faf13)[0x55bae128af13]
emacs(+0x24993e)[0x55bae12d993e]
emacs(+0x1fad61)[0x55bae128ad61]
emacs(+0x24993e)[0x55bae12d993e]
emacs(+0x1fad61)[0x55bae128ad61]
emacs(+0x1f7035)[0x55bae1287035]
emacs(+0x1faf13)[0x55bae128af13]
emacs(+0x1fd500)[0x55bae128d500]
emacs(+0x1f881a)[0x55bae128881a]
/usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/simple-fab5b0cf-a243428a.eln(F636f6d6d616e642d65786563757465_command_execute_0+0x211)[0x7f6c7dc4bd01]
emacs(+0x1faf13)[0x55bae128af13]
emacs(+0x1faf85)[0x55bae128af85]
emacs(+0x171789)[0x55bae1201789]
emacs(+0x1f9d9f)[0x55bae1289d9f]
emacs(+0x15ece4)[0x55bae11eece4]
emacs(+0x1fcb8b)[0x55bae128cb8b]
emacs(+0x15ec83)[0x55bae11eec83]
emacs(+0x16587a)[0x55bae11f587a]
emacs(+0x165bb5)[0x55bae11f5bb5]
emacs(+0x5267e)[0x55bae10e267e]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf2)[0x7f6c822f1cb2]
emacs(+0x52d8e)[0x55bae10e2d8e]
```

The gdb backtrace:

Thread 1 "emacs" received signal SIGABRT, Aborted.
raise (sig=<optimised out>) at ../sysdeps/unix/sysv/linux/raise.c:49
49	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt full
#0  raise (sig=<optimised out>) at ../sysdeps/unix/sysv/linux/raise.c:49
        set =
            {__val = {402653184, 4294967296, 0, 511101108348, 390842024046, 9805516513614356736, 0, 656, 93825007892640, 992, 140737288797088, 93823829016576, 0, 140737287431157, 93824993797552, 18446744067266838271}}
        pid = <optimised out>
        tid = <optimised out>
#1  0x000055555559bad8 in terminate_due_to_signal ()
#2  0x000055555559c266 in emacs_fopen.cold ()
#3  0x000055555559cb7e in read_minibuf_unwind.cold ()
#4  0x00007fffefa67bc4 in F6d696e696275666665722d77696e646f772d6163746976652d70_minibuffer_window_active_p_0 ()
    at /usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/window-0d1b8b93-edcead22.eln
#5  0x000055555574eff3 in Ffuncall ()
#6  0x000055555579da1e in exec_byte_code ()
#7  0x0000555555753597 in funcall_lambda ()
#8  0x000055555574ee41 in Ffuncall ()
#9  0x00005555557525e2 in Frun_hooks ()
#10 0x000055555574eff3 in Ffuncall ()
#11 0x000055555574f065 in call1 ()
#12 0x00005555556da671 in Fget_buffer_create.part.0 ()
#13 0x00005555556eedac in get_minibuffer ()
#14 0x00005555556eeffb in read_minibuf ()
#15 0x00005555556f00bd in Fread_from_minibuffer ()
#16 0x0000555555750e32 in funcall_subr ()
#17 0x000055555574eff3 in Ffuncall ()
#18 0x00007fffec6dd721 in F69646f2d726561642d696e7465726e616c_ido_read_internal_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
#19 0x000055555574eff3 in Ffuncall ()
#20 0x00007fffec6e14f5 in F69646f2d66696c652d696e7465726e616c_ido_file_internal_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
#21 0x0000555555750e32 in funcall_subr ()
#22 0x000055555574eff3 in Ffuncall ()
#23 0x00007fffec6ecb02 in F69646f2d66696e642d66696c65_ido_find_file_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
#24 0x000055555574eff3 in Ffuncall ()
#25 0x000055555574b115 in Ffuncall_interactively ()
#26 0x000055555574eff3 in Ffuncall ()
#27 0x00005555557515e0 in Fapply ()
#28 0x000055555574c8fa in Fcall_interactively ()
#29 0x00007fffef94dd01 in F636f6d6d616e642d65786563757465_command_execute_0 ()
    at /usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/simple-fab5b0cf-a243428a.eln
#30 0x000055555574eff3 in Ffuncall ()
#31 0x000055555574f065 in call1 ()
#32 0x00005555556c5869 in command_loop_1 ()
#33 0x000055555574de7f in internal_condition_case ()
#34 0x00005555556b2dc4 in command_loop_2 ()
#35 0x0000555555750c6b in internal_catch ()
#36 0x00005555556b2d63 in command_loop ()
#37 0x00005555556b995a in recursive_edit_1 ()
#38 0x00005555556b9c95 in Frecursive_edit ()
#39 0x00005555555a667e in main ()


A quick bisect points to this commit:

```

780b1db126fcfdbb50da5c1acf24b3c6e614dd9f is the first bad commit
commit 780b1db126fcfdbb50da5c1acf24b3c6e614dd9f
Author: Alan Mackenzie <acm <at> muc.de>
Date:   Fri May 14 15:52:21 2021 +0000

    Various detailed fixes to minibuf.c, etc., to fix bug #48337

    Also fix some unsafe coding.

    * lisp/window.el (push-window-buffer-onto-prev): New function, extracted from
    (record-window-buffer): Refactor by extracting the above, and removing the now
    redundant parameter DO-MINIBUF.

    * src/minibuf.c (zip_minibuffer_stacks, read_minibuf): Replace calls to
    get_minibuffer (0) by nth_minibuffer (0).  Replace calls to
    Qrecord_window_buffer by calls to Qpush_window_buffer_onto_prev.
    (Factive_minibuffer_window, read_minibuf_unwind): Call abort_emacs should an
    "impossible" null value be returned by nth_minibuffer.
    (read_minibuf): Move the get_minibuffer_call to just after the incrementation
    of minibuf_level as a precaution against a missing buffer in
    Vminibuffer_list.
    (nth_minibuffer): Replace XCAR by Fcar, to allow (car nil) to work.
    (init_minibuf_once): Create the inactive buffer  *Minibuf-0*.
    (syms_of_minibuf): New DEFSYM, Qpush_window_buffer_onto_prev.

    * src/window.c (restore_window_configuration): Replace some XCARs and XCDRs
    by Fcar_safe and Fcdr_safe.

 lisp/window.el | 62 +++++++++++++++++++++++++++++-----------------------------
 src/minibuf.c  | 35 +++++++++++++++++++++------------
 src/window.c   |  4 ++--
```


Apologies, I haven't been able to create an `emacs -Q` recipe yet,
clearly this is triggered by a specific set of parameters in my personal
configuration.  I am still trying to create simple recipe, but I am
hoping that the backtrace might help to help tracking the issue.



Best Regards,
Sébastien.


In GNU Emacs 28.0.50 (build 10, x86_64-pc-linux-gnu, cairo version 1.16.0)
 of 2021-05-15 built on pyjama
Repository revision: cd46972ee82d392cef8fa6e51c370d3d8f48777a
Repository branch: HEAD
Windowing system distributor 'The X.Org Foundation', version 11.0.12009000
System Description: Ubuntu 20.10

Configured using:
 'configure --with-cairo --with-modules --without-compress-install
 --with-x-toolkit=no --with-gnutls --with-mailutils
 --with-native-compilation --with-json --with-harfbuzz
 --with-imagemagick --with-jpeg --with-png --with-rsvg --with-tiff
 --with-wide-int --with-xft --with-xml2 --with-xpm --with-modules
 --with-threads --with-native-image-api --with-pdumper
 '--program-transform-name=s/^ctags$/ctags.emacs/' 'CFLAGS=-O3
 -mtune=native -march=native -fomit-frame-pointer' prefix=/usr/local'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ IMAGEMAGICK
JPEG JSON LCMS2 LIBSELINUX LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY
OLDXMENU PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF X11 XDBE XIM XPM
ZLIB

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

Major mode: mu4e-headers

Minor modes in effect:
  org-roam-mode: t
  delete-selection-mode: t
  company-prescient-mode: t
  ido-vertical-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  projectile-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  save-place-mode: t
  shell-dirtrack-mode: t
  show-paren-mode: t
  savehist-mode: t
  recentf-mode: t
  ido-everywhere: t
  global-hl-line-mode: t
  hl-line-mode: t
  electric-pair-mode: t
  display-time-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-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
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Load-path shadows:
/home/sebastien/.emacs.d/elpa/magit-20210430.404/magit-section hides /home/sebastien/.emacs.d/elpa/magit-section-20210224.1417/magit-section
~/emacs/custom hides /usr/local/share/emacs/28.0.50/lisp/custom
/home/sebastien/.emacs.d/elpa/transient-20210426.2141/transient hides /usr/local/share/emacs/28.0.50/lisp/transient
~/emacs/local/bindings hides /usr/local/share/emacs/28.0.50/lisp/bindings
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-python hides /usr/local/share/emacs/28.0.50/lisp/org/ob-python
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-js hides /usr/local/share/emacs/28.0.50/lisp/org/ob-js
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-timer hides /usr/local/share/emacs/28.0.50/lisp/org/org-timer
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox hides /usr/local/share/emacs/28.0.50/lisp/org/ox
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-io hides /usr/local/share/emacs/28.0.50/lisp/org/ob-io
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-sqlite hides /usr/local/share/emacs/28.0.50/lisp/org/ob-sqlite
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-core hides /usr/local/share/emacs/28.0.50/lisp/org/ob-core
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-num hides /usr/local/share/emacs/28.0.50/lisp/org/org-num
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-stan hides /usr/local/share/emacs/28.0.50/lisp/org/ob-stan
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-table hides /usr/local/share/emacs/28.0.50/lisp/org/org-table
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-publish hides /usr/local/share/emacs/28.0.50/lisp/org/ox-publish
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-awk hides /usr/local/share/emacs/28.0.50/lisp/org/ob-awk
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-tempo hides /usr/local/share/emacs/28.0.50/lisp/org/org-tempo
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-compat hides /usr/local/share/emacs/28.0.50/lisp/org/org-compat
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-J hides /usr/local/share/emacs/28.0.50/lisp/org/ob-J
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-agenda hides /usr/local/share/emacs/28.0.50/lisp/org/org-agenda
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-w3m hides /usr/local/share/emacs/28.0.50/lisp/org/ol-w3m
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-tangle hides /usr/local/share/emacs/28.0.50/lisp/org/ob-tangle
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-archive hides /usr/local/share/emacs/28.0.50/lisp/org/org-archive
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-groovy hides /usr/local/share/emacs/28.0.50/lisp/org/ob-groovy
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-ebnf hides /usr/local/share/emacs/28.0.50/lisp/org/ob-ebnf
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-comint hides /usr/local/share/emacs/28.0.50/lisp/org/ob-comint
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-octave hides /usr/local/share/emacs/28.0.50/lisp/org/ob-octave
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-R hides /usr/local/share/emacs/28.0.50/lisp/org/ob-R
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-makefile hides /usr/local/share/emacs/28.0.50/lisp/org/ob-makefile
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-ocaml hides /usr/local/share/emacs/28.0.50/lisp/org/ob-ocaml
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-shen hides /usr/local/share/emacs/28.0.50/lisp/org/ob-shen
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-matlab hides /usr/local/share/emacs/28.0.50/lisp/org/ob-matlab
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-ledger hides /usr/local/share/emacs/28.0.50/lisp/org/ob-ledger
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-attach-git hides /usr/local/share/emacs/28.0.50/lisp/org/org-attach-git
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-eshell hides /usr/local/share/emacs/28.0.50/lisp/org/ol-eshell
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-picolisp hides /usr/local/share/emacs/28.0.50/lisp/org/ob-picolisp
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-plot hides /usr/local/share/emacs/28.0.50/lisp/org/org-plot
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-latex hides /usr/local/share/emacs/28.0.50/lisp/org/ox-latex
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-bibtex hides /usr/local/share/emacs/28.0.50/lisp/org/ol-bibtex
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-hledger hides /usr/local/share/emacs/28.0.50/lisp/org/ob-hledger
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-duration hides /usr/local/share/emacs/28.0.50/lisp/org/org-duration
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-forth hides /usr/local/share/emacs/28.0.50/lisp/org/ob-forth
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-protocol hides /usr/local/share/emacs/28.0.50/lisp/org/org-protocol
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-feed hides /usr/local/share/emacs/28.0.50/lisp/org/org-feed
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-emacs-lisp hides /usr/local/share/emacs/28.0.50/lisp/org/ob-emacs-lisp
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-mobile hides /usr/local/share/emacs/28.0.50/lisp/org/org-mobile
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-datetree hides /usr/local/share/emacs/28.0.50/lisp/org/org-datetree
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-calc hides /usr/local/share/emacs/28.0.50/lisp/org/ob-calc
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-capture hides /usr/local/share/emacs/28.0.50/lisp/org/org-capture
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-vala hides /usr/local/share/emacs/28.0.50/lisp/org/ob-vala
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-clock hides /usr/local/share/emacs/28.0.50/lisp/org/org-clock
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-org hides /usr/local/share/emacs/28.0.50/lisp/org/ob-org
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-eww hides /usr/local/share/emacs/28.0.50/lisp/org/ol-eww
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-mhe hides /usr/local/share/emacs/28.0.50/lisp/org/ol-mhe
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-eshell hides /usr/local/share/emacs/28.0.50/lisp/org/ob-eshell
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-asymptote hides /usr/local/share/emacs/28.0.50/lisp/org/ob-asymptote
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-md hides /usr/local/share/emacs/28.0.50/lisp/org/ox-md
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-list hides /usr/local/share/emacs/28.0.50/lisp/org/org-list
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-gnus hides /usr/local/share/emacs/28.0.50/lisp/org/ol-gnus
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-beamer hides /usr/local/share/emacs/28.0.50/lisp/org/ox-beamer
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-lua hides /usr/local/share/emacs/28.0.50/lisp/org/ob-lua
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-java hides /usr/local/share/emacs/28.0.50/lisp/org/ob-java
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-C hides /usr/local/share/emacs/28.0.50/lisp/org/ob-C
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-docview hides /usr/local/share/emacs/28.0.50/lisp/org/ol-docview
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-version hides /usr/local/share/emacs/28.0.50/lisp/org/org-version
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org hides /usr/local/share/emacs/28.0.50/lisp/org/org
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-abc hides /usr/local/share/emacs/28.0.50/lisp/org/ob-abc
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-css hides /usr/local/share/emacs/28.0.50/lisp/org/ob-css
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-lilypond hides /usr/local/share/emacs/28.0.50/lisp/org/ob-lilypond
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/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-bbdb hides /usr/local/share/emacs/28.0.50/lisp/org/ol-bbdb
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-element hides /usr/local/share/emacs/28.0.50/lisp/org/org-element
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/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-loaddefs hides /usr/local/share/emacs/28.0.50/lisp/org/org-loaddefs
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-rmail hides /usr/local/share/emacs/28.0.50/lisp/org/ol-rmail
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/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-attach hides /usr/local/share/emacs/28.0.50/lisp/org/org-attach
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-clojure hides /usr/local/share/emacs/28.0.50/lisp/org/ob-clojure
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-entities hides /usr/local/share/emacs/28.0.50/lisp/org/org-entities
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-table hides /usr/local/share/emacs/28.0.50/lisp/org/ob-table
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-ctags hides /usr/local/share/emacs/28.0.50/lisp/org/org-ctags
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-mscgen hides /usr/local/share/emacs/28.0.50/lisp/org/ob-mscgen
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-sed hides /usr/local/share/emacs/28.0.50/lisp/org/ob-sed
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-ditaa hides /usr/local/share/emacs/28.0.50/lisp/org/ob-ditaa
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-irc hides /usr/local/share/emacs/28.0.50/lisp/org/ol-irc
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-indent hides /usr/local/share/emacs/28.0.50/lisp/org/org-indent
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/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol hides /usr/local/share/emacs/28.0.50/lisp/org/ol
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-coq hides /usr/local/share/emacs/28.0.50/lisp/org/ob-coq
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-lob hides /usr/local/share/emacs/28.0.50/lisp/org/ob-lob
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-sql hides /usr/local/share/emacs/28.0.50/lisp/org/ob-sql
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-fortran hides /usr/local/share/emacs/28.0.50/lisp/org/ob-fortran
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-macro hides /usr/local/share/emacs/28.0.50/lisp/org/org-macro
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/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-ruby hides /usr/local/share/emacs/28.0.50/lisp/org/ob-ruby
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ol-info hides /usr/local/share/emacs/28.0.50/lisp/org/ol-info
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-maxima hides /usr/local/share/emacs/28.0.50/lisp/org/ob-maxima
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-faces hides /usr/local/share/emacs/28.0.50/lisp/org/org-faces
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-dot hides /usr/local/share/emacs/28.0.50/lisp/org/ob-dot
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-macs hides /usr/local/share/emacs/28.0.50/lisp/org/org-macs
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-icalendar hides /usr/local/share/emacs/28.0.50/lisp/org/ox-icalendar
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-odt hides /usr/local/share/emacs/28.0.50/lisp/org/ox-odt
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-latex hides /usr/local/share/emacs/28.0.50/lisp/org/ob-latex
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-keys hides /usr/local/share/emacs/28.0.50/lisp/org/org-keys
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-footnote hides /usr/local/share/emacs/28.0.50/lisp/org/org-footnote
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-goto hides /usr/local/share/emacs/28.0.50/lisp/org/org-goto
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-html hides /usr/local/share/emacs/28.0.50/lisp/org/ox-html
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-org hides /usr/local/share/emacs/28.0.50/lisp/org/ox-org
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-perl hides /usr/local/share/emacs/28.0.50/lisp/org/ob-perl
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-crypt hides /usr/local/share/emacs/28.0.50/lisp/org/org-crypt
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-scheme hides /usr/local/share/emacs/28.0.50/lisp/org/ob-scheme
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-refile hides /usr/local/share/emacs/28.0.50/lisp/org/org-refile
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-processing hides /usr/local/share/emacs/28.0.50/lisp/org/ob-processing
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob hides /usr/local/share/emacs/28.0.50/lisp/org/ob
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-id hides /usr/local/share/emacs/28.0.50/lisp/org/org-id
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ox-man hides /usr/local/share/emacs/28.0.50/lisp/org/ox-man
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-lisp hides /usr/local/share/emacs/28.0.50/lisp/org/ob-lisp
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-screen hides /usr/local/share/emacs/28.0.50/lisp/org/ob-screen
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-eval hides /usr/local/share/emacs/28.0.50/lisp/org/ob-eval
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-install hides /usr/local/share/emacs/28.0.50/lisp/org/org-install
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-habit hides /usr/local/share/emacs/28.0.50/lisp/org/org-habit
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-inlinetask hides /usr/local/share/emacs/28.0.50/lisp/org/org-inlinetask
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-pcomplete hides /usr/local/share/emacs/28.0.50/lisp/org/org-pcomplete
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/org-lint hides /usr/local/share/emacs/28.0.50/lisp/org/org-lint
/home/sebastien/.emacs.d/elpa/org-plus-contrib-20210510/ob-exp hides /usr/local/share/emacs/28.0.50/lisp/org/ob-exp
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Features:
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dbus gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo gnus-spec
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mu4e-context mu4e-draft mu4e-actions rfc2368 smtpmail sendmail mu4e-mark
mu4e-proc mu4e-utils doc-view jka-compr image-mode exif mu4e-lists
mu4e-message flow-fill mule-util mu4e-vars mu4e-meta org-download
org-attach async org-roam org-roam-link org-roam-graph org-roam-doctor
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nxml-enc xmltok nxml-util ox-md ox-latex ox-html table ox-ascii
ox-publish ox org-element org-journal-list org-tempo tempo org-feed
delsel company-prescient prescient ido-vertical-mode company-lsp company
chess chess-engine chess-display chess-random chess-input chess-var
chess-module chess-game chess-pgn chess-file chess-database chess-fen
chess-algebraic chess-ply chess-pos chess-message elfeed-goodies-logging
elfeed-goodies-new-entry-hooks mm-url gnus nnheader
elfeed-goodies-split-pane popwin elfeed-goodies-show-mode ace-jump-mode
noflet cl-indent elfeed-goodies-search-mode powerline
powerline-separators powerline-themes elfeed-goodies use-package-core
flycheck-clj-kondo flycheck dap-java dap-mode dap-launch posframe
dap-overlays lsp-java request autorevert cc-mode cc-fonts cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
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elfeed-csv elfeed elfeed-curl elfeed-log elfeed-db elfeed-lib thingatpt
avl-tree generator url-queue xml-query xml help-fns+ help-fns radix-tree
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message rfc822 mml mml-sec epa derived gnus-util rmail rmail-loaddefs
text-property-search mailabbrev gmm-utils mailheader mm-decode mm-bodies
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rfc2045 mm-util ietf-drums mail-prsvr url-gw nsm rmc puny url-cache
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format-spec misterioso-theme paren savehist recentf tree-widget wid-edit
ido linum hl-line elec-pair time desktop frameset cus-load tex-site
tab-line pcase easy-mmode helm-easymenu rx slime-autoloads info package
browse-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie url-domsuf url-util mailcap url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib iso-transl 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 easymenu
timer select scroll-bar mouse jit-lock font-lock syntax 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 button
loaddefs faces cus-face macroexp files window 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 cairo x
multi-tty make-network-process native-compile emacs)

Memory information:
((conses 16 779803 51699)
 (symbols 48 52353 21)
 (strings 32 237283 14313)
 (string-bytes 1 7685614)
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Message #8 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: sebastien <at> weblogism.com
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 12:35:56 +0300

> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 09:39:09 +0100
> Cc: Alan Mackenzie <acm <at> muc.de>
> 
> Thread 1 "emacs" received signal SIGABRT, Aborted.
> raise (sig=<optimised out>) at ../sysdeps/unix/sysv/linux/raise.c:49
> 49	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
> (gdb) bt full
> #0  raise (sig=<optimised out>) at ../sysdeps/unix/sysv/linux/raise.c:49
>         set =
>             {__val = {402653184, 4294967296, 0, 511101108348, 390842024046, 9805516513614356736, 0, 656, 93825007892640, 992, 140737288797088, 93823829016576, 0, 140737287431157, 93824993797552, 18446744067266838271}}
>         pid = <optimised out>
>         tid = <optimised out>
> #1  0x000055555559bad8 in terminate_due_to_signal ()
> #2  0x000055555559c266 in emacs_fopen.cold ()
> #3  0x000055555559cb7e in read_minibuf_unwind.cold ()
> #4  0x00007fffefa67bc4 in F6d696e696275666665722d77696e646f772d6163746976652d70_minibuffer_window_active_p_0 ()
>     at /usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/window-0d1b8b93-edcead22.eln
> #5  0x000055555574eff3 in Ffuncall ()
> #6  0x000055555579da1e in exec_byte_code ()
> #7  0x0000555555753597 in funcall_lambda ()
> #8  0x000055555574ee41 in Ffuncall ()
> #9  0x00005555557525e2 in Frun_hooks ()
> #10 0x000055555574eff3 in Ffuncall ()
> #11 0x000055555574f065 in call1 ()
> #12 0x00005555556da671 in Fget_buffer_create.part.0 ()
> #13 0x00005555556eedac in get_minibuffer ()
> #14 0x00005555556eeffb in read_minibuf ()
> #15 0x00005555556f00bd in Fread_from_minibuffer ()
> #16 0x0000555555750e32 in funcall_subr ()
> #17 0x000055555574eff3 in Ffuncall ()
> #18 0x00007fffec6dd721 in F69646f2d726561642d696e7465726e616c_ido_read_internal_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
> #19 0x000055555574eff3 in Ffuncall ()
> #20 0x00007fffec6e14f5 in F69646f2d66696c652d696e7465726e616c_ido_file_internal_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
> #21 0x0000555555750e32 in funcall_subr ()
> #22 0x000055555574eff3 in Ffuncall ()
> #23 0x00007fffec6ecb02 in F69646f2d66696e642d66696c65_ido_find_file_0 () at /usr/local/lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/ido-ccb260dc-39aade56.eln
> #24 0x000055555574eff3 in Ffuncall ()
> #25 0x000055555574b115 in Ffuncall_interactively ()
> #26 0x000055555574eff3 in Ffuncall ()
> #27 0x00005555557515e0 in Fapply ()
> #28 0x000055555574c8fa in Fcall_interactively ()
> #29 0x00007fffef94dd01 in F636f6d6d616e642d65786563757465_command_execute_0 ()
>     at /usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/../../../../bin/../lib/emacs/28.0.50/native-lisp/28.0.50-10b2f18d/preloaded/simple-fab5b0cf-a243428a.eln

Thanks, but can you also provide a Lisp backtrace, by invoking
"xbacktrace" from GDB?  That command is defined in src/.gdbinit.

Message #11 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 11:10:38 +0100

Hi Eli,

On 15/05/2021 10:35, Eli Zaretskii wrote:

> 
> Thanks, but can you also provide a Lisp backtrace, by invoking
> "xbacktrace" from GDB?  That command is defined in src/.gdbinit.
> 

I am not having much luck there:

(gdb) xbacktrace
'backtrace_top' has unknown return type; cast the call to its declared
return type


It is quite possible I am doing something wrong?


I have also tried without native comp, and getting a similar crash:

```
Thread 1 "emacs" hit Breakpoint 1, 0x00005555555992da in
terminate_due_to_signal ()
(gdb) bt full
#0  0x00005555555992da in terminate_due_to_signal ()
#1  0x0000555555599b21 in emacs_fopen.cold ()
#2  0x000055555559a439 in read_minibuf_unwind.cold ()
#3  0x000055555574c43b in Ffuncall ()
#4  0x000055555579a59e in exec_byte_code ()
#5  0x000055555574c362 in Ffuncall ()
#6  0x000055555579a59e in exec_byte_code ()
#7  0x0000555555751109 in funcall_lambda ()
#8  0x000055555574c362 in Ffuncall ()
#9  0x0000555555750142 in Frun_hooks ()
#10 0x000055555574c43b in Ffuncall ()
#11 0x000055555574c4e5 in call1 ()
#12 0x00005555556d7df1 in Fget_buffer_create.part.0 ()
#13 0x00005555556ec52c in get_minibuffer ()
#14 0x00005555556ec77b in read_minibuf ()
#15 0x00005555556ed83d in Fread_from_minibuffer ()
#16 0x000055555574e2b2 in funcall_subr ()
#17 0x000055555574c43b in Ffuncall ()
#18 0x000055555579a59e in exec_byte_code ()
#19 0x000055555574c362 in Ffuncall ()
#20 0x000055555579a59e in exec_byte_code ()
#21 0x000055555574c362 in Ffuncall ()
#22 0x000055555579a59e in exec_byte_code ()
#23 0x000055555574c362 in Ffuncall ()
#24 0x0000555555748695 in Ffuncall_interactively ()
#25 0x000055555574c43b in Ffuncall ()
#26 0x000055555574ec80 in Fapply ()
#27 0x0000555555749e7a in Fcall_interactively ()
#28 0x000055555574c43b in Ffuncall ()
#29 0x000055555579a59e in exec_byte_code ()
#30 0x000055555574c362 in Ffuncall ()
#31 0x000055555574c4e5 in call1 ()
#32 0x00005555556c2fe9 in command_loop_1 ()
#33 0x000055555574b3ff in internal_condition_case ()
#34 0x00005555556b0544 in command_loop_2 ()
#35 0x000055555574e0eb in internal_catch ()
#36 0x00005555556b04e3 in command_loop ()
#37 0x00005555556b70da in recursive_edit_1 ()
#38 0x00005555556b7415 in Frecursive_edit ()
#39 0x00005555555a3dfe in main ()
'backtrace_top' has unknown return type; cast the call to its declared
return type
```

This seems to isolate the issue to `read_minibuf_unwind`, which is part
of the changeset of the commit I bisected to.



Regards,
Sébastien.

Message #14 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sébastien Le Callonnec <sebastien <at> weblogism.com>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 13:40:10 +0300

> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 11:10:38 +0100
> 
> > Thanks, but can you also provide a Lisp backtrace, by invoking
> > "xbacktrace" from GDB?  That command is defined in src/.gdbinit.
> > 
> 
> I am not having much luck there:
> 
> (gdb) xbacktrace
> 'backtrace_top' has unknown return type; cast the call to its declared
> return type

How did you compile Emacs?  Please compile with -g3 on the compiler
command line.

> This seems to isolate the issue to `read_minibuf_unwind`, which is part
> of the changeset of the commit I bisected to.

That was clear before, what is not clear is _where_ in
read_minibuf_unwind it happens, and why.  That's a very large
function.

Message #17 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 12:16:20 +0100

Hi Eli,

On 15/05/2021 11:40, Eli Zaretskii wrote:
>> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
>> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
>> Date: Sat, 15 May 2021 11:10:38 +0100
>>
>>> Thanks, but can you also provide a Lisp backtrace, by invoking
>>> "xbacktrace" from GDB?  That command is defined in src/.gdbinit.
>>>
>>
>> I am not having much luck there:
>>
>> (gdb) xbacktrace
>> 'backtrace_top' has unknown return type; cast the call to its declared
>> return type
> 
> How did you compile Emacs?  Please compile with -g3 on the compiler
> command line.


Ah, I was not using -g3, here it is:

```
(gdb) xbacktrace
"active-minibuffer-window" (0xffffa300)
"minibuffer-window-active-p" (0xffffa7a0)
"powerline-set-selected-window" (0xfffface0)
"run-hooks" (0xffffae48)
"read-from-minibuffer" (0xffffb318)
"ido-read-internal" (0xffffbe30)
"ido-file-internal" (0xffffc610)
"ido-find-file" (0xffffce40)
"funcall-interactively" (0xffffce38)
"call-interactively" (0xffffcfe0)
"command-execute" (0xffffd538)

```

(ok, seems to be triggered by powerline, that's why I could not create
that recipe...)

```
(gdb) bt full
#0  terminate_due_to_signal (sig=21845, backtrace_limit=1481635280) at
emacs.c:399
#1  0x000055555571c837 in emacs_abort () at sysdep.c:2282
#2  0x000055555573decb in Factive_minibuffer_window () at minibuf.c:231
        frames = XIL(0x1f1dad70d)
        frame = make_fixnum(23456248280808)
        f = 0x55555623e6a5
        innermost_MB = XIL(0)
#3  0x00005555557ba8eb in funcall_subr (subr=0x555555c6b7e0
<Sactive_minibuffer_window>, numargs=0, args=0x7fffffffa300) at eval.c:3109
        internal_argbuf = {XIL(0x8700010000), XIL(0),
XIL(0x555555ce3da0), XIL(0x109ebdb700), XIL(0x555555c6b7e0),
XIL(0x7fffffffa258), make_fixnum(23456248679553), XIL(0x1000000000)}
        internal_args = 0x7fffffffa300
#4  0x00005555557ba4b2 in Ffuncall (nargs=1, args=0x7fffffffa2f8) at
eval.c:3036
        fun = XIL(0x555555c6b7e5)
        original_fun = XIL(0x2aaa9c0cbee0)
        funcar = XIL(0x7fffffffa2d0)
        numargs = 0
        val = XIL(0x30)
        count = 52
```

>> This seems to isolate the issue to `read_minibuf_unwind`, which is part
>> of the changeset of the commit I bisected to.
> 
> That was clear before, what is not clear is _where_ in
> read_minibuf_unwind it happens, and why.  That's a very large
> function.
> 

Sorry if I was stating the obvious. (=


Regards,
Sébastien.

Message #20 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 12:23:39 +0100

Hi,

To reproduce, create `init-ido.el`:

```
(require 'package)
(add-to-list 'package-archives
             '("melpa" . "https://melpa.org/packages/") t)
(package-install 'powerline)
(require 'powerline)
(powerline-default-theme)
(require 'ido)
(ido-mode t)
(ido-everywhere t)
```

Run

```
emacs -Q --load init-ido.el

```

Once emacs is loaded, visit file (`C-x C-f`)



Regards,
Sébastien.

Message #23 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sébastien Le Callonnec <sebastien <at> weblogism.com>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 14:25:56 +0300

> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 12:16:20 +0100
> 
> (gdb) xbacktrace
> "active-minibuffer-window" (0xffffa300)
> "minibuffer-window-active-p" (0xffffa7a0)
> "powerline-set-selected-window" (0xfffface0)
> "run-hooks" (0xffffae48)
> "read-from-minibuffer" (0xffffb318)
> "ido-read-internal" (0xffffbe30)
> "ido-file-internal" (0xffffc610)
> "ido-find-file" (0xffffce40)
> "funcall-interactively" (0xffffce38)
> "call-interactively" (0xffffcfe0)
> "command-execute" (0xffffd538)

Thanks, this clarifies the issue.

> (gdb) bt full
> #0  terminate_due_to_signal (sig=21845, backtrace_limit=1481635280) at
> emacs.c:399
> #1  0x000055555571c837 in emacs_abort () at sysdep.c:2282
> #2  0x000055555573decb in Factive_minibuffer_window () at minibuf.c:231
>         frames = XIL(0x1f1dad70d)
>         frame = make_fixnum(23456248280808)
>         f = 0x55555623e6a5
>         innermost_MB = XIL(0)

What is the value of minibuf_level in frame #2?

> >> This seems to isolate the issue to `read_minibuf_unwind`, which is part
> >> of the changeset of the commit I bisected to.
> > 
> > That was clear before, what is not clear is _where_ in
> > read_minibuf_unwind it happens, and why.  That's a very large
> > function.
> 
> Sorry if I was stating the obvious. (=

No need to be sorry, no harm done.

Message #26 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sébastien Le Callonnec <sebastien <at> weblogism.com>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 14:36:17 +0300

> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 12:23:39 +0100
> 
> To reproduce, create `init-ido.el`:
> 
> ```
> (require 'package)
> (add-to-list 'package-archives
>              '("melpa" . "https://melpa.org/packages/") t)
> (package-install 'powerline)
> (require 'powerline)
> (powerline-default-theme)
> (require 'ido)
> (ido-mode t)
> (ido-everywhere t)
> ```
> 
> Run
> 
> ```
> emacs -Q --load init-ido.el
> 
> ```
> 
> Once emacs is loaded, visit file (`C-x C-f`)

Thanks, but this doesn't reproduce the crash for me.  (I didn't
actually install powerline from MELPA, but instead downloaded the
files and added the directory to load-path.)

Message #29 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sébastien Le Callonnec <sebastien <at> weblogism.com>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 14:44:14 +0300

> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 12:23:39 +0100
> 

It sounds like your Emacs is quite old, from 4 days ago?  Maybe that's
why the problem doesn't happen for me.  Could you update from latest
master branch and rebuild?

Message #32 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 13:06:19 +0100

Hi Eli,

On 15/05/2021 12:25, Eli Zaretskii wrote:
(...)
> 
>> (gdb) bt full
>> #0  terminate_due_to_signal (sig=21845, backtrace_limit=1481635280) at
>> emacs.c:399
>> #1  0x000055555571c837 in emacs_abort () at sysdep.c:2282
>> #2  0x000055555573decb in Factive_minibuffer_window () at minibuf.c:231
>>         frames = XIL(0x1f1dad70d)
>>         frame = make_fixnum(23456248280808)
>>         f = 0x55555623e6a5
>>         innermost_MB = XIL(0)
> 
> What is the value of minibuf_level in frame #2?

(gdb) b Factive_minibuffer_window
Breakpoint 2 at 0x1e9e76: file minibuf.c, line 221.
(gdb) run -Q --load ~/init-ido.el
Starting program: /home/sebastien/dev/emacs/src/emacs -Q --load
~/init-ido.el
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff1579640 (LWP 561829)]
[New Thread 0x7ffff0d17640 (LWP 561830)]
[New Thread 0x7fffebfff640 (LWP 561831)]

Thread 1 "emacs" hit Breakpoint 2, Factive_minibuffer_window () at
minibuf.c:221
221	{
(gdb) select-frame 2
(gdb) p minibuf_
minibuf_c_loop_level             minibuf_follows_frame
minibuf_moves_frame_when_opened  minibuf_prompt_width
minibuf_selected_window
minibuf_conform_representation   minibuf_level
minibuf_prompt                   minibuf_save_list
minibuf_window
(gdb) p minibuf_level
$1 = 0


I reported from an older version of Emacs, as the current one is
unusable, but it seems in the meantime this commit seems to have fixed
the issue:

46e4704e2abca4d264a43965f92eab7608211ee6

Regards,
Sébastien.

Message #35 received at 48433 <at> debbugs.gnu.org (full text, mbox):

From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: acm <at> muc.de, 48433 <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 13:18:59 +0100

Hi Eli,

I can confirm 46e4704e2abca4d264a43965f92eab7608211ee6 fixes the issue,
this can be closed.

Thanks a lot for your time, and thanks to Alan for the fix.


Regards,
Sébastien.

Message #40 received at 48433-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Sébastien Le Callonnec <sebastien <at> weblogism.com>
Cc: acm <at> muc.de, 48433-done <at> debbugs.gnu.org
Subject: Re: bug#48433: 28.0.50; Emacs Core Dump when trying to visit file
Date: Sat, 15 May 2021 15:33:34 +0300

> Cc: 48433 <at> debbugs.gnu.org, acm <at> muc.de
> From: Sébastien Le Callonnec <sebastien <at> weblogism.com>
> Date: Sat, 15 May 2021 13:18:59 +0100
> 
> Hi Eli,
> 
> I can confirm 46e4704e2abca4d264a43965f92eab7608211ee6 fixes the issue,
> this can be closed.
> 
> Thanks a lot for your time, and thanks to Alan for the fix.

Thanks, closing.

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