--- Begin Message ---
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Subject: |
27.1; Strange byte compile error with `cond' involving cons |
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Date: |
Wed, 19 Aug 2020 04:00:16 +0900 |
I encountered a strange byte compile error with simple elisp code.
[How to reproduce]
1. Save the following file as /tmp/foo.el:
--- /tmp/foo.el ----------------------------
(defun xyz (arg)
(cond
; ((member '("image") arg) ; OK
; ((member '(rel "image") arg) ; OK
; ((remove '(rel . "image") arg) ; OK
; ((memq '(rel . "image") arg) ; NG
((member '(rel . "image") arg) ; NG
1)))
--------------------------------------------
2. emacs-27.1 -Q
3. M-x byte-compile-file /tmp/foo.el RET
4. Then byte compile fails with the following error:
Compiling file /tmp/foo.el at Wed Aug 19 03:38:06 2020
Entering directory ‘/tmp/’
foo.el:1:13:Error: Wrong type argument: listp, "image"
in *Compile-Log* buffer. I don't see foo.elc in /tmp after that.
Expected result is that byte compile finishes without error and foo.elc
is generated.
[Additional info]
a. As written in the above code, only cons (rel . "image") causes this
error. Both lists (rel "image") and ("image") are OK.
b. As written in the above code, both `member' and `memq' fail while
`remove' succeeds.
c. Emacs 26.3 works as expected.
Regards,
Ikumi Keita
In GNU Emacs 27.1 (build 1, x86_64-unknown-freebsd12.1, GTK+ Version 3.24.20)
of 2020-08-19 built on freebsd.vmware
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description: 12.1-RELEASE-p8
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Compiling /tmp/foo.el... (xyz)
You can run the command ‘byte-compile-file’ with M-x by-c RET
Compiling /tmp/foo.el... (xyz)
Mark set
next-line: End of buffer [2 times]
Mark set
Making completion list...
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS GLIB NOTIFY KQUEUE ACL
GNUTLS LIBXML2 FREETYPE HARFBUZZ XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11
XDBE XIM MODULES THREADS JSON PDUMPER LCMS2 GMP
Important settings:
value of $EMACSLOADPATH: /home/keita/elisp:
value of $LANG: C
locale-coding-system: nil
Major mode: Emacs-Lisp
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
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
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:
/home/keita/elisp/reftex-parse hides
/home/keita/scr/emacs-27.1/lisp/textmodes/reftex-parse
Features:
(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 seq gv
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
mail-utils time-date subr-x cl-loaddefs cl-lib warnings byte-opt compile
comint ansi-color ring bytecomp byte-compile cconv 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 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 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 51013 10241)
(symbols 48 6580 1)
(strings 32 16915 1623)
(string-bytes 1 565681)
(vectors 16 10152)
(vector-slots 8 141502 12592)
(floats 8 25 119)
(intervals 56 304 125)
(buffers 1000 16))
--- End Message ---