GNU bug report logs - #26639
26.0.50; sxhash gives non-equal values for equal records

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Damien Cassou <damien <at> cassou.me>
Subject: bug#26639: closed (Re: bug#27057: 26.0.50; Equal defstruct
 objects not recognized in puthash)
Date: Wed, 24 May 2017 15:57:01 +0000

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

Your bug report

#26639: 26.0.50; sxhash gives non-equal values for equal records

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 26639 <at> debbugs.gnu.org.

-- 
26639: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26639
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: 27057-done <at> debbugs.gnu.org, 26639-done <at> debbugs.gnu.org
Cc: Lars Brinkhoff <lars <at> nocrew.org>, Michael Albinus <Michael.Albinus <at> gmx.de>
Subject: Re: bug#27057: 26.0.50;
 Equal defstruct objects not recognized in puthash
Date: Wed, 24 May 2017 11:56:25 -0400

>     (progn
>       (cl-defstruct sm-foo a b)
>       (setq sm-hash (make-hash-table :test 'equal))
>       (puthash (make-sm-foo :a 4 :b 6) "test1" sm-hash)
>       (puthash (make-sm-foo :a 4 :b 6) "test2" sm-hash)
>       (hash-table-count sm-hash))
>
> this code return 2 here instead of 1.

This should be fixed now,


        Stefan

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

From: Damien Cassou <damien <at> cassou.me>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.0.50; gethash can't find value from equal key
Date: Mon, 24 Apr 2017 16:49:35 +0200

In emacs built from master today (53f8f4bf), evaluate this in the
scratch buffer of `emacs -Q`:

(cl-defstruct foo slot1 slot2)
(setq foo1 (make-foo :slot1 "abc" :slot2 "cba"))
(setq foo2 (make-foo :slot1 "abc" :slot2 "cba"))

(equal foo1 foo2) ;; should be t

(setq hytmp (make-hash-table :test 'equal))
(puthash foo1 'foobar hytmp)

(gethash foo1 hytmp 'no) ;; should be 'foobar

(gethash foo2 hytmp 'no) ;; should be 'foobar BUT IS 'no

I'm expecting last line to return 'foobar instead of 'no.


In GNU Emacs 26.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
 of 2017-04-24 built on luz4
Repository revision: 53f8f4bf2db097f4a2c68194c55a87c5a1176c8c
Windowing system distributor 'Fedora Project', version 11.0.11903000
System Description:	Fedora release 25 (Twenty Five)

Recent messages:
Mark set [2 times]
cl-lib
foo
#s(foo "abc" "cba") [2 times]
t
#s(hash-table size 65 test equal rehash-size 1.5 rehash-threshold 0.8125 data ( ...))
foobar [2 times]
no
GNU Emacs 26.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.11) of 2017-04-24
Making completion list...

Configured using:
 'configure --with-mailutils'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LC_MONETARY: fr_FR.UTF-8
  value of $LC_NUMERIC: fr_FR.UTF-8
  value of $LC_TIME: fr_FR.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  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

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message subr-x puny seq byte-opt
bytecomp byte-compile cconv dired dired-loaddefs format-spec rfc822 mml
easymenu 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 cl-seq cl-macs gv cl-loaddefs cl-lib
time-date mule-util 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 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 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 dbusbind 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 96944 8366)
 (symbols 48 20210 1)
 (miscs 40 48 194)
 (strings 32 17755 4844)
 (string-bytes 1 573035)
 (vectors 16 14717)
 (vector-slots 8 482626 4459)
 (floats 8 49 150)
 (intervals 56 269 33)
 (buffers 976 13))

-- 
Damien Cassou
http://damiencassou.seasidehosting.st

"Success is the ability to go from one failure to another without
losing enthusiasm." --Winston Churchill

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