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eldoc error in Emacs 27

From: Yuan Fu
Subject: eldoc error in Emacs 27
Date: Mon, 27 Jul 2020 14:51:03 -0400

I’ve been using Emacs 27 pretest and this error occurs to me recently: When I 
type M-: and type anything in the minibuffer, Emacs shows an error "eldoc 
error: (void-function elisp-eldoc-funcall)". And if I have debug-on-error set 
to t, a backtrack pops up and Emacs hangs. Often I can get out of the hang, 
sometimes I can’t, and sometimes Emacs crashes (once). 

M-x find-library eldoc shows that I’m using the new ELPA version 1.5. I looked 
around in that file and didn’t see elisp-eldoc-funcall defined anywhere 
(neither can I in the old eldoc.el that comes with Emacs 27). 

I can reproduce by starting Emacs without the dump file (I deleted it) and load 
the ELPA eldoc.el. Below is the output of report-Emacs-bugs.


In GNU Emacs 27.0.91 (build 1, x86_64-apple-darwin19.5.0, NS appkit-1894.50 
Version 10.15.5 (Build 19F101))
of 2020-07-27 built on Brown
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.5

Recent messages:
Loading uniquify...done
Loading electric...done
Loading emacs-lisp/eldoc...done
Loading cus-start...done
Loading tooltip...done
Loading /Applications/Emacs.app/Contents/Resources/lisp/leim/leim-list.el 
Finding pointers to doc strings...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading loadup.el (source)...done
eldoc error: (void-function elisp-eldoc-funcall)
Configured using:
'configure --with-modules --with-pdumper=yes

Configured features:

Important settings:
 value of $LC_CTYPE: UTF-8
 value of $LANG: en_CN.UTF-8
 locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
 tooltip-mode: t
 global-eldoc-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
 blink-cursor-mode: t
 auto-composition-mode: t
 auto-encryption-mode: t
 auto-compression-mode: t
 buffer-read-only: t
 line-number-mode: t
 transient-mark-mode: t

Load-path shadows:
/Applications/Emacs.app/Contents/Resources/lisp/mail/metamail hides 
/Applications/Emacs.app/Contents/Resources/lisp/sb-image hides 

(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
epg-config gnus-util rmail rmail-loaddefs text-property-search time-date
subr-x seq byte-opt bytecomp byte-compile cconv mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils cl-macs gv
easy-mmode cl-loaddefs cl-lib tooltip cus-start eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win 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
timer select scroll-bar mouse jit-lock font-lock syntax facemenu
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 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 kqueue
cocoa ns lcms2 multi-tty make-network-process emacs)

Memory information:
((conses 16 273628 13956)
(symbols 48 20909 2)
(strings 32 56592 2494)
(string-bytes 1 2401947)
(vectors 16 51731)
(vector-slots 8 1412156 63014)
(floats 8 188 88)
(intervals 56 219 0)
(buffers 1000 12))

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