--- Begin Message ---
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Subject: |
29.0.50; Native compilation hangs on cyclic lists |
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Date: |
Tue, 20 Sep 2022 07:55:48 +0000 |
Evaluating the two following forms results in Emacs hanging:
(defun test-cycle ()
'#1=(a . #1#))
(native-compile 'test-cycle)
The bug has been reproduced on a system running Debian as well.
- Lars
In GNU Emacs 29.0.50 (build 1, aarch64-apple-darwin21.6.0, NS
appkit-2113.60 Version 12.6 (Build 21G115))
Windowing system distributor 'Apple', version 10.3.2113
System Description: macOS 12.6
Configured using:
'configure
--prefix=/nix/store/wf6wjsvvs3q7k0vf3xlfzi3ik8v3601n-emacs-29.0.50
--disable-build-details --with-modules --with-ns
--disable-ns-self-contained --with-native-compilation'
Configured features:
ACL GLIB GMP GNUTLS JPEG JSON LIBXML2 MODULES NATIVE_COMP NOTIFY KQUEUE
NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS ZLIB
Important settings:
value of $EMACSLOADPATH:
/nix/store/87hrwgmnic6hhjl6p7ch30ik90dpw324-emacs-packages-deps/share/emacs/site-lisp:
value of $EMACSNATIVELOADPATH:
/nix/store/87hrwgmnic6hhjl6p7ch30ik90dpw324-emacs-packages-deps/share/emacs/native-lisp::
value of $LC_CTYPE: UTF-8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
show-paren-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
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
/nix/store/87hrwgmnic6hhjl6p7ch30ik90dpw324-emacs-packages-deps/share/emacs/site-lisp/elpa/let-alist-1.0.6/let-alist
hides
/nix/store/wf6wjsvvs3q7k0vf3xlfzi3ik8v3601n-emacs-29.0.50/share/emacs/29.0.50/lisp/emacs-lisp/let-alist
/nix/store/87hrwgmnic6hhjl6p7ch30ik90dpw324-emacs-packages-deps/share/emacs/site-lisp/elpa/nadvice-0.3/nadvice
hides
/nix/store/wf6wjsvvs3q7k0vf3xlfzi3ik8v3601n-emacs-29.0.50/share/emacs/29.0.50/lisp/emacs-lisp/nadvice
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs
comp comp-cstr warnings icons subr-x rx cl-seq cl-macs gv cl-extra
help-mode bytecomp byte-compile cconv cl-lib sendmail rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mail-utils rmc iso-transl tooltip eldoc
paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode
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 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 nadvice seq
simple cl-generic indonesian philippine 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 emoji-zwj charscript charprop case-table
epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button
loaddefs faces cus-face macroexp files window text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads kqueue cocoa ns multi-tty
make-network-process native-compile emacs)
Memory information:
((conses 16 78425 6959)
(symbols 48 7029 0)
(strings 32 19124 2018)
(string-bytes 1 599871)
(vectors 16 16700)
(vector-slots 8 325741 9902)
(floats 8 27 31)
(intervals 56 320 0)
(buffers 1000 12))
--- End Message ---
--- Begin Message ---
|
Subject: |
Re: bug#57957: bug#69872: 29.2; Async native compilation of seq.el test uses up resources and hangs |
|
Date: |
Mon, 01 Apr 2024 16:46:47 -0400 |
|
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Andrea Corallo <acorallo@gnu.org> writes:
> Andrea Corallo <akrl@sdf.org> writes:
>
>> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>>
>>>> The question is of course also how much effort circular lists deserve in
>>>> the compiler. From my point of view, not too much because they aren't
>>>> very useful, in code at least. And dealing with them costs runtime.
>>>
>>> Circular data structures are perfectly normal in source code under
>>> a `quote` but the code itself should never be cyclic (so I think it
>>> would be OK to signal an error (and/or to inf-loop) when asked to
>>> compile a chunk of code that has a cycle). So we *should* handle
>>> circular data structures correctly.
>>
>> I agree, Saturday I should have some time to look into this.
>
> A little time after... I finally managed to get to it, sorry for the
> delay.
>
> I've pushed into master c5de73a95a6, it fixes my reprodurer here and
> adds a test for this.
>
> If anyone could confirm this is fixed i'll be (extremely) happy to close
> this :)
>
> Thanks
>
> Andrea
Right I'm closing this as I believe it's fixed, happy to re-open if it's
not the case.
Thanks!
Andrea
--- End Message ---