Package: emacs;
Reported by: Arthur Miller <arthur.miller <at> live.com>
Date: Mon, 3 Jul 2023 22:49:02 UTC
Severity: normal
Found in version 30.0.50
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: help-debbugs <at> gnu.org (GNU bug Tracking System) To: Eli Zaretskii <eliz <at> gnu.org> Cc: tracker <at> debbugs.gnu.org Subject: bug#64450: closed (30.0.50; char-table-subtype aborts emacs) Date: Sat, 08 Jul 2023 08:17:01 +0000
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Your message dated Sat, 08 Jul 2023 11:16:30 +0300 with message-id <83sf9yddi9.fsf <at> gnu.org> and subject line Re: bug#64450: 30.0.50; char-table-subtype aborts emacs has caused the debbugs.gnu.org bug report #64450, regarding 30.0.50; char-table-subtype aborts emacs to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs <at> gnu.org.) -- 64450: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=64450 GNU Bug Tracking System Contact help-debbugs <at> gnu.org with problems
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From: Arthur Miller <arthur.miller <at> live.com> To: bug-gnu-emacs <at> gnu.org Subject: 30.0.50; char-table-subtype aborts emacs Date: Tue, 04 Jul 2023 00:47:56 +0200> (insert (pp Info-mode-map)) > > (keymap > #^[nil nil keymap > #^^[3 0 nil nil nil nil nil nil nil nil nil Info-next-reference nil nil nil Info-follow-nearest-node nil nil nil nil nil nil nil nil nil nil nil nil nil > > I have removed rest of printed code for the brewity for the mail, but if you > eval above and place the cursor somewhere after the "keymap", or before the char > table, and then try to read the subtype with: > > (char-table-subtype (read (current-buffer))) > > Then Emacs dumps core in version 26 up to current master. Emacs 25 actually ends > up in debugger instead of crashing: (It is not a crash, it's abort.) Please report a bug with all these details. AFAICT, this happens because the debugger now uses cl-print to display objects in the backtrace, and cl-print calls type-of, which aborts if presented with a sub-char-table: /* "Impossible" cases. */ case PVEC_MISC_PTR: case PVEC_OTHER: case PVEC_SUB_CHAR_TABLE: case PVEC_FREE: ; } emacs_abort (); In GNU Emacs 30.0.50 (build 1, x86_64-w64-mingw32) of 2023-06-28 built on HP-LAPTOP Repository revision: 3cffacfea4445feb89d9da1c22b3650eac343b4d Repository branch: help-info-patch Windowing system distributor 'Microsoft Corp.', version 10.0.19045 System Description: Microsoft Windows 10 Home (v10.0.2009.19045.3086) Configured using: 'configure PKG_CONFIG_PATH=/mingw64/lib/pkgconfig:/mingw64/share/pkgconfig' Configured features: ACL GMP GNUTLS JSON LIBXML2 MODULES NOTIFY W32NOTIFY PDUMPER SOUND SQLITE3 THREADS TOOLKIT_SCROLL_BARS ZLIB Important settings: value of $LANG: SVE locale-coding-system: cp1252 Major mode: Article Minor modes in effect: windmove-mode: t beacon-mode: t helm-flx-mode: t 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[Message part 3 (message/rfc822, inline)]
From: Eli Zaretskii <eliz <at> gnu.org> To: Arthur Miller <arthur.miller <at> live.com> Cc: 64450-done <at> debbugs.gnu.org Subject: Re: bug#64450: 30.0.50; char-table-subtype aborts emacs Date: Sat, 08 Jul 2023 11:16:30 +0300> From: Arthur Miller <arthur.miller <at> live.com> > Date: Tue, 04 Jul 2023 00:47:56 +0200 > > > > > (insert (pp Info-mode-map)) > > > > (keymap > > #^[nil nil keymap > > #^^[3 0 nil nil nil nil nil nil nil nil nil Info-next-reference nil nil nil Info-follow-nearest-node nil nil nil nil nil nil nil nil nil nil nil nil nil > > > > I have removed rest of printed code for the brewity for the mail, but if you > > eval above and place the cursor somewhere after the "keymap", or before the char > > table, and then try to read the subtype with: > > > > (char-table-subtype (read (current-buffer))) > > > > Then Emacs dumps core in version 26 up to current master. Emacs 25 actually ends > > up in debugger instead of crashing: > > (It is not a crash, it's abort.) > > Please report a bug with all these details. > > AFAICT, this happens because the debugger now uses cl-print to display > objects in the backtrace, and cl-print calls type-of, which aborts if > presented with a sub-char-table: > > /* "Impossible" cases. */ > case PVEC_MISC_PTR: > case PVEC_OTHER: > case PVEC_SUB_CHAR_TABLE: > case PVEC_FREE: ; > } > emacs_abort (); Fixed on the master branch by a patch proposed by Stefan Monnier on emacs-devel. See https://lists.gnu.org/archive/html/emacs-devel/2023-07/msg00121.html.
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