* bug#29107: 27.0.50; Infinite recursion in Ruby mode
@ 2017-11-01 19:52 Anders Lindgren
2017-11-10 2:13 ` Noam Postavsky
2021-01-02 2:20 ` Dmitry Gutov
0 siblings, 2 replies; 3+ messages in thread
From: Anders Lindgren @ 2017-11-01 19:52 UTC (permalink / raw)
To: 29107
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Hi!
I just noticed that Ruby mode can go into infinite recursion (or "Lisp
nesting exceeds ‘max-lisp-eval-depth’"). I managed to boil it down to the
following:
Evaluate (setq debug-on-error t)
Open a new file, say test.rb
Type:
func do {
And press return.
In the backtrace, the following is listed over and over again:
ruby-smie--indent-to-stmt()
ruby-smie-rules(:before "{")
smie-indent--rule-1(:before "{" nil nil)
smie-indent--rule(:before "{")
smie-indent-keyword()
run-hook-with-args-until-success(smie-indent-keyword)
smie-indent-calculate()
smie-indent-virtual()
It happens in Emacs 25.2 and in a week-old build from the master branch.
Sincerely,
Anders Lindgren
In GNU Emacs 27.0.50 (build 2, x86_64-apple-darwin16.6.0, NS appkit-1504.83
Version 10.12.5 (Build 16F73))
of 2017-10-25 built on mbp.lan
Repository revision: bc9300ac5ed3bdf52a2f8b9e217236e1ee76cd02
Windowing system distributor 'Apple', version 10.3.1504
Recent messages:
t
(New file)
Mark set
s-( is undefined
Mark set
Entering debugger...
Error in debug printer: (void-function t) [1113 times]
Error during redisplay: (ucs-normalize-hfs-nfd-pre-write-conversion 1 92)
signaled (error "Variable binding depth exceeds max-specpdl-size") [2 times]
set-auto-coding: Variable binding depth exceeds max-specpdl-size
Back to top level
Configured features:
JPEG NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS
Important settings:
value of $LC_CTYPE: UTF-8
value of $LANG: en_SE.UTF-8
locale-coding-system: utf-8-unix
Major mode: Special
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
buffer-read-only: t
line-number-mode: t
transient-mark-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message rmc puny seq byte-opt dired
dired-loaddefs format-spec rfc822 mml mml-sec password-cache epa derived
epg epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils help-mode
warnings gv bytecomp byte-compile cl-loaddefs cl-lib cconv debug
vc-dispatcher vc-svn ruby-mode smie easymenu elec-pair time-date tooltip
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 menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors 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 composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray 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 kqueue cocoa ns
multi-tty make-network-process emacs)
Memory information:
((conses 16 209217 10912)
(symbols 48 20615 1)
(miscs 40 57 249)
(strings 32 30746 1897)
(string-bytes 1 808845)
(vectors 16 35813)
(vector-slots 8 721700 15012)
(floats 8 49 266)
(intervals 56 218 0)
(buffers 992 14))
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^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#29107: 27.0.50; Infinite recursion in Ruby mode
2017-11-01 19:52 bug#29107: 27.0.50; Infinite recursion in Ruby mode Anders Lindgren
@ 2017-11-10 2:13 ` Noam Postavsky
2021-01-02 2:20 ` Dmitry Gutov
1 sibling, 0 replies; 3+ messages in thread
From: Noam Postavsky @ 2017-11-10 2:13 UTC (permalink / raw)
To: Anders Lindgren; +Cc: 29107
tags 29107 + confirmed
quit
Anders Lindgren <andlind@gmail.com> writes:
> I just noticed that Ruby mode can go into infinite recursion (or
> "Lisp nesting exceeds ‘max-lisp-eval-depth’"). I managed to boil it
> down to the following:
>
> Evaluate (setq debug-on-error t)
>
> Open a new file, say test.rb
> Type:
>
> func do {
>
> And press return.
> Entering debugger...
> Error in debug printer: (void-function t) [1113 times]
By the way, this funny message seems to be caused by loading cl-print
while stack has been used up by the inf looping. If setting
debugger-print-function to prin1, or loading cl-print before triggering
the bug, that message doesn't show up.
^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#29107: 27.0.50; Infinite recursion in Ruby mode
2017-11-01 19:52 bug#29107: 27.0.50; Infinite recursion in Ruby mode Anders Lindgren
2017-11-10 2:13 ` Noam Postavsky
@ 2021-01-02 2:20 ` Dmitry Gutov
1 sibling, 0 replies; 3+ messages in thread
From: Dmitry Gutov @ 2021-01-02 2:20 UTC (permalink / raw)
To: Anders Lindgren, 29107-done
Version: 28.1
Hi Anders,
On 01.11.2017 21:52, Anders Lindgren wrote:
> I just noticed that Ruby mode can go into infinite recursion (or "Lisp
> nesting exceeds ‘max-lisp-eval-depth’"). I managed to boil it down to
> the following:
>
> Evaluate (setq debug-on-error t)
>
> Open a new file, say test.rb
> Type:
>
> func do {
>
> And press return.
>
> In the backtrace, the following is listed over and over again:
>
> ruby-smie--indent-to-stmt()
> ruby-smie-rules(:before "{")
> smie-indent--rule-1(:before "{" nil nil)
> smie-indent--rule(:before "{")
> smie-indent-keyword()
> run-hook-with-args-until-success(smie-indent-keyword)
> smie-indent-calculate()
> smie-indent-virtual()
>
> It happens in Emacs 25.2 and in a week-old build from the master branch.
Sorry about the long wait, it didn't seem like a critical issue given
that the code in question was either a typo, or a very weird way to
write a block. Please correct me if I'm wrong here.
Either way, it should be fixed now in master, commit 0f561ee553.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-11-01 19:52 bug#29107: 27.0.50; Infinite recursion in Ruby mode Anders Lindgren
2017-11-10 2:13 ` Noam Postavsky
2021-01-02 2:20 ` Dmitry Gutov
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