From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: pierre.techoueyres@free.fr (Pierre =?UTF-8?Q?T=C3=A9choueyres?=) Newsgroups: gmane.emacs.bugs Subject: bug#29220: 26.0.90; eieio-persistent-read fail to restore saved object. Date: Tue, 28 Nov 2017 22:39:04 +0100 Message-ID: <87zi76f5hj.fsf@killashandra.ballybran.fr> References: <87y3nga0lv.fsf@killashandra.ballybran.fr> <87po8s8k02.fsf@ericabrahamsen.net> <87zi7udorn.fsf@killashandra.ballybran.fr> <8760aim2a5.fsf@ericabrahamsen.net> <87375j2tzd.fsf@users.sourceforge.net> <87inecwl1v.fsf@killashandra.ballybran.fr> <87y3n81eq7.fsf@users.sourceforge.net> <87h8ts1cfp.fsf@users.sourceforge.net> <87zi7kyzcf.fsf@ericabrahamsen.net> <87efov1zzn.fsf@users.sourceforge.net> <87h8trzc6e.fsf@ericabrahamsen.net> <87bmjz0xez.fsf@users.sourceforge.net> <87zi7cpooo.fsf@killashandra.ballybran.fr> <87h8tkzgef.fsf@users.sourceforge.net> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1511905226 18288 195.159.176.226 (28 Nov 2017 21:40:26 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 28 Nov 2017 21:40:26 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) Cc: Eric Abrahamsen , 29220@debbugs.gnu.org, Stefan Monnier To: Noam Postavsky Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Nov 28 22:40:15 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eJnbr-0003W9-Rv for geb-bug-gnu-emacs@m.gmane.org; Tue, 28 Nov 2017 22:40:08 +0100 Original-Received: from localhost ([::1]:40210 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eJnbx-0002m7-F2 for geb-bug-gnu-emacs@m.gmane.org; Tue, 28 Nov 2017 16:40:13 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51447) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eJnbq-0002lH-PU for bug-gnu-emacs@gnu.org; Tue, 28 Nov 2017 16:40:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eJnbl-0000xt-Sz for bug-gnu-emacs@gnu.org; Tue, 28 Nov 2017 16:40:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:54766) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eJnbl-0000xp-Q4 for bug-gnu-emacs@gnu.org; Tue, 28 Nov 2017 16:40:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eJnbl-0005ky-Ie for bug-gnu-emacs@gnu.org; Tue, 28 Nov 2017 16:40:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: pierre.techoueyres@free.fr (Pierre =?UTF-8?Q?T=C3=A9choueyres?=) Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 28 Nov 2017 21:40:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 29220 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 29220-submit@debbugs.gnu.org id=B29220.151190515422068 (code B ref 29220); Tue, 28 Nov 2017 21:40:01 +0000 Original-Received: (at 29220) by debbugs.gnu.org; 28 Nov 2017 21:39:14 +0000 Original-Received: from localhost ([127.0.0.1]:35213 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eJnb0-0005jr-9q for submit@debbugs.gnu.org; Tue, 28 Nov 2017 16:39:14 -0500 Original-Received: from smtp4-g21.free.fr ([212.27.42.4]:6492) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eJnay-0005jj-7D for 29220@debbugs.gnu.org; Tue, 28 Nov 2017 16:39:12 -0500 Original-Received: from killashandra.ballybran.fr.free.fr (unknown [IPv6:2a01:e35:2e14:eab0:b51f:3dc7:7e03:942]) by smtp4-g21.free.fr (Postfix) with ESMTPS id DD8F119F5AF; Tue, 28 Nov 2017 22:39:04 +0100 (CET) In-Reply-To: <87h8tkzgef.fsf@users.sourceforge.net> (Noam Postavsky's message of "Thu, 23 Nov 2017 19:09:28 -0500") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:140504 Archived-At: Noam Postavsky writes: >> I've tried to dive into print.c but I don't understand how you return >> from print_object, when you're on an hash-table to obtain the vector >> with an eieio-class-tag-- (as in 25.3) ? >> >> Can anyone tell me how this work in 25.3 ? > > Nothing has changed in print.c in this respect. In 25.3, objects are > vectors, and class tags are symbols. In 26, objects are records and > class tags are eieio--class records. As a result, they print > differently. I trust you, but that's not the answer I expected, sorry. I tried to follow the trace from the call of `eieio-persistent-save' until I could find where it prints the content of the hash table. What bothers me is that, in emacs 25, you had have an short vector with a symbol and now you've an big object dump instead. Emacs 25 : [eieio-class-tag--person "Bob"] Emacs 26 : #s(#2=#s(eieio--class person nil nil [#s(cl-slot-descriptor name #3=#:unbound string nil)] #s(hash-table size 65 test eq rehash-size 1.5 rehash-threshold 0.8125 data (name 0)) nil ((:name . name)) #1=[] #1# #s(#2# #3#) (:custom-groups nil)) "Bob") As a side note: as class tags are now eieio--class objects you can't read an object saved with emacs 25 in emacs 26. Maybe this incompatibility should be documented into NEWS ? P.S. I hope that I'm not too harsh. It's not my intention.