GNU bug report logs - #23336
24.3; dbus-register-signal misparses :argN arguments

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Joel Ray Holveck <joelh <at> piquan.org>
Subject: bug#23336: closed (Re: bug#23336: 24.3; dbus-register-signal
 misparses :argN arguments)
Date: Tue, 26 Apr 2016 18:30:03 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#23336: 24.3; dbus-register-signal misparses :argN arguments

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 23336 <at> debbugs.gnu.org.

-- 
23336: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23336
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Joel Ray Holveck <joelh <at> piquan.org>
Cc: 23336-done <at> debbugs.gnu.org
Subject: Re: bug#23336: 24.3; dbus-register-signal misparses :argN arguments
Date: Tue, 26 Apr 2016 20:29:47 +0200

Version: 25.1

Joel Ray Holveck <joelh <at> piquan.org> writes:

Hi Joel,

> The following expression raises an error of type "wrong-type-argument":
>
>     (dbus-register-signal :system "com.ubuntu.Upstart"
> "/com/ubuntu/Upstart/jobs/network_2dinterface"
> "com.ubuntu.Upstart0_6.Job" "InstanceAdded" 'rwv-handle-intf-up :arg0
> "/com/ubuntu/Upstart/jobs/network_2dinterface/cscotun0")

Thank you for this bug report. It looks like the problem has been fixed
already last year with the following commit:

--8<---------------cut here---------------start------------->8---
commit b206b9d73728dec9b71a41ac4e1622ec795d6fd0
Author: Daiki Ueno <ueno <at> gnu.org>
Date:   Thu Feb 26 11:01:10 2015 +0900

    dbus.el: fix ":argN" keyword recognition
    
    * net/dbus.el (dbus-register-signal): Convert "N" of ":argN" to
    integer before comparison.
--8<---------------cut here---------------end--------------->8---

I've checked with the pretest version of Emacs 25.1, and your example
does not show any error indeed.

So I'm closing this bug report for Emacs 25.1.

Best regards, Michael.

[Message part 3 (message/rfc822, inline)]

From: Joel Ray Holveck <joelh <at> piquan.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; dbus-register-signal misparses :argN arguments
Date: Thu, 21 Apr 2016 20:39:04 -0700

The following expression raises an error of type "wrong-type-argument":

    (dbus-register-signal :system "com.ubuntu.Upstart" 
"/com/ubuntu/Upstart/jobs/network_2dinterface" 
"com.ubuntu.Upstart0_6.Job" "InstanceAdded" 'rwv-handle-intf-up :arg0 
"/com/ubuntu/Upstart/jobs/network_2dinterface/cscotun0")

(Note that this particular call is incorrect for reasons dealing with 
the
Upstart API, but that is irrelevant to this bug.)

If you evaluate the defun for dbus-register-signal (instead of using
the .elc's compiled version) and then evaluate that expression, you can
easily see where the problem is:

    Debugger entered--Lisp error: (wrong-type-argument 
number-or-marker-p "0")
      <=("0" 63)
      (and (<= counter 63) (stringp value))

This happens on line 647 of dbus.el.  You can see that counter was set 
on
line 644 to a string, but then is compared against an integer.

As a workaround, it's possible to use the backward-compatibility
no-keywords style for :argN options, but not for :pathN options.

The following patch fixes the issue:

--- dbus.el.~1~ 2016-04-21 20:28:14.373278122 -0700
+++ dbus.el     2016-04-21 20:28:23.877255431 -0700
@@ -641,7 +641,8 @@
                      (string-match
                       "^:\\(arg\\|path\\)\\([[:digit:]]+\\)$"
                       (symbol-name key)))
-                (setq counter (match-string 2 (symbol-name key))
+                (setq counter (string-to-number
+                                (match-string 2 (symbol-name key)))
                       args (cdr args)
                       value (car args))
                 (unless (and (<= counter 63) (stringp value))






In GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2014-03-07 on lamiak, modified by Debian
Windowing system distributor `The X.Org Foundation', version 
11.0.11501000
System Description:	Ubuntu 14.04.4 LTS

Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 
'--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
 '--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=lucid' '--with-toolkit-scroll-bars' '--without-gconf'
 '--without-gsettings' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2
 -fstack-protector --param=ssp-buffer-size=4 -Wformat
 -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions
 -Wl,-z,relro' 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  eldoc-mode: t
  minibuffer-electric-default-mode: t
  mail-abbrevs-mode: t
  iswitchb-mode: t
  desktop-save-mode: t
  savehist-mode: t
  which-function-mode: t
  auto-insert-mode: t
  show-paren-mode: t
  display-time-mode: t
  recentf-mode: t
  msb-mode: t
  shell-dirtrack-mode: t
  tooltip-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
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
DBus-Event (dbus-event :system 2 260 org.freedesktop.DBus nil nil nil 
dbus-call-method-handler :1.0) [3 times]
Fdbus_message_internal: DBUS_MESSAGE_TYPE_METHOD_CALL :system 
org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus AddMatch 
dbus-call-method-handler
Fdbus_message_internal: Parameter3 
type='signal',sender=':1.0',interface='com.ubuntu.Upstart0_6.Job',member='InstanceAdded',path='/com/ubuntu/Upstart/jobs/network_2dinterface',arg0='/com/ubuntu/Upstart/jobs/network_2dinterface/cscotun0'
xd_signature: s
xd_append_arg: s 
type='signal',sender=':1.0',interface='com.ubuntu.Upstart0_6.Job',member='InstanceAdded',path='/com/ubuntu/Upstart/jobs/network_2dinterface',arg0='/com/ubuntu/Upstart/jobs/network_2dinterface/cscotun0'
Fdbus_message_internal: Message sent: (:serial :system 261)
xd_read_message_1: Event received: DBUS_MESSAGE_TYPE_METHOD_RETURN 261 
org.freedesktop.DBus (null) (null) (null) nil
xd_read_message_1: Event stored: (:system 2 261 org.freedesktop.DBus nil 
nil nil dbus-call-method-handler)
DBus-Event (dbus-event :system 2 261 org.freedesktop.DBus nil nil nil 
dbus-call-method-handler) [3 times]
Matching rule 
"type='signal',sender=':1.0',interface='com.ubuntu.Upstart0_6.Job',member='InstanceAdded',path='/com/ubuntu/Upstart/jobs/network_2dinterface',arg0='/com/ubuntu/Upstart/jobs/network_2dinterface/cscotun0'" 
created

Load-path shadows:
~/src/elisp/loaddefs hides ~/share/emacs/site-lisp/loaddefs
/usr/share/emacs/24.3/site-lisp/debian-startup hides 
/usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs24/site-lisp/cmake-data/cmake-mode hides 
/usr/share/emacs/site-lisp/cmake-mode
~/src/elisp/loaddefs hides /usr/share/emacs/24.3/lisp/loaddefs
/usr/share/emacs/site-lisp/rst hides 
/usr/share/emacs/24.3/lisp/textmodes/rst
/usr/share/emacs24/site-lisp/prolog-el/prolog hides 
/usr/share/emacs/24.3/lisp/progmodes/prolog

Features:
(shadow sort mail-extr emacsbug message rfc822 mml mml-sec mm-decode
mm-bodies mm-encode mail-parse rfc2231 gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mail-utils hippie-exp edebug dbus xml debug
info org-taskjuggler org-odt org-lparse org-latex org-export-latex
org-beamer org-icalendar org-docbook footnote org-ascii cus-edit
nroff-mode help-mode org-wl org-w3m org-vm org-rmail org-mhe org-mew
org-irc org-jsinfo org-infojs org-html org-exp ob-exp org-exp-blocks
org-agenda org-info org-gnus org-docview org-bibtex bibtex org-bbdb grep
dired-aux dired-x dired misearch multi-isearch add-log semantic/imenu
semantic/sb semantic/db-file data-debug cedet-files vc-git
semantic/wisent/python semantic/decorate/include semantic/decorate/mode
semantic/decorate pulse semantic/dep semantic/wisent/python-wy
semantic/wisent semantic/wisent/wisent python rx eldoc jka-compr
minibuf-eldef mailabbrev iswitchb icomplete desktop cus-start cus-load
savehist vcursor disp-table org-protocol org ob-tangle ob-ref ob-lob
ob-table org-footnote org-src ob-comint ob-keys org-pcomplete org-list
org-faces org-entities noutline outline easy-mmode org-version
ob-emacs-lisp ob org-compat org-macs ob-eval org-loaddefs find-func
cal-menu calendar cal-loaddefs derived which-func imenu autoinsert
cl-macs avoid paren time festival server cl tramp-cache tramp-sh recentf
tree-widget msb tramp tramp-compat auth-source gnus-util mm-util
mail-prsvr password-cache tramp-loaddefs shell pcomplete format-spec
uniquify printing ps-print ps-def lpr midnight slime-autoloads pylint
haskell-mode-autoloads ecb warnings edmacro kmacro ecb-symboldef
ecb-analyse ecb-compatibility ecb-winman-support ecb-autogen autoload
ecb-tod ecb-cycle ecb-eshell ecb-help ecb-jde ecb-method-browser
hideshow ecb-semantic ecb-file-browser ecb-speedbar ecb-layout compile
comint ansi-color ecb-create-layout advice help-fns cl-lib
advice-preload ecb-compilation ecb-common-browser assoc speedbar
sb-image dframe ecb-navigate ecb-mode-line ecb-face tree-buffer
ecb-upgrade ecb-cedet-wrapper semantic/db-mode semantic/db-find
semantic/db-ref semantic/analyze semantic/sort semantic/scope
semantic/analyze/fcn semantic/db gv eieio-base semantic/format ezimage
semantic/tag-ls semantic/find semantic/ctxt semantic/util-modes easymenu
semantic/util semantic semantic/tag semantic/lex semantic/fw eieio
byte-opt bytecomp byte-compile cconv mode-local cedet wid-edit ecb-util
ring thingatpt devhelp time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process dbusbind dynamic-setting font-render-setting
x-toolkit x multi-tty emacs)

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