--- Begin Message ---
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Subject: |
25.1.50; Byte compiler generates incorrect code when second &optional is used |
|
Date: |
Wed, 09 Nov 2016 22:08:53 +0100 |
emacs -Q
In *scratch*, evaluate:
(funcall
(let ((lexical-binding t))
(byte-compile
(lambda (&optional a b)
(list a b))))
'a 'b)
Result is (a b), as expected. Now evaluate
(funcall
(let ((lexical-binding t))
(byte-compile
(lambda (&optional a &optional b)
(list a b))))
'a 'b)
Result is (b nil).
Emacs should either generate correct code in both cases, or signal an
error in the latter case.
In GNU Emacs 25.1.50.13 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
of 2016-11-09 built on localhost
Repository revision: eb364fddec1431f459166cebb36f09f6b371dd71
Windowing system distributor 'The X.Org Foundation', version 11.0.11501000
System Description: Ubuntu 14.04 LTS
Configured using:
'configure --with-modules --enable-checking
--enable-check-lisp-object-type 'CFLAGS=-ggdb3 -O0''
Configured features:
XPM JPEG TIFF GIF PNG SOUND GSETTINGS NOTIFY GNUTLS FREETYPE XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 MODULES
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
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
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 mail-extr emacsbug message dired format-spec rfc822 mml
mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util help-fns help-mode easymenu
cl-loaddefs pcase cl-lib mail-prsvr mail-utils time-date mule-util
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame 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 charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer 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 inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)
Memory information:
((conses 16 88985 12134)
(symbols 48 19888 0)
(miscs 40 343 148)
(strings 32 14767 5042)
(string-bytes 1 440399)
(vectors 16 12780)
(vector-slots 8 446092 5001)
(floats 8 166 21)
(intervals 56 209 0)
(buffers 976 24)
(heap 1024 40188 973))
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