From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.bugs Subject: Re: GIT version: values writing Date: Thu, 20 Jan 2011 16:16:33 +0100 Message-ID: <87fwsnzju6.fsf@gnu.org> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1295536612 27346 80.91.229.12 (20 Jan 2011 15:16:52 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 20 Jan 2011 15:16:52 +0000 (UTC) Cc: bug-guile@gnu.org To: Hans Aberg Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Thu Jan 20 16:16:48 2011 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PfwFj-0007u7-1P for guile-bugs@m.gmane.org; Thu, 20 Jan 2011 16:16:47 +0100 Original-Received: from localhost ([127.0.0.1]:53587 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PfwFi-0001bN-F2 for guile-bugs@m.gmane.org; Thu, 20 Jan 2011 10:16:46 -0500 Original-Received: from [140.186.70.92] (port=49754 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PfwFb-0001ac-Rf for bug-guile@gnu.org; Thu, 20 Jan 2011 10:16:41 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PfwFa-0004JM-LD for bug-guile@gnu.org; Thu, 20 Jan 2011 10:16:39 -0500 Original-Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:64147) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PfwFa-0004J8-Eh for bug-guile@gnu.org; Thu, 20 Jan 2011 10:16:38 -0500 X-IronPort-AV: E=Sophos;i="4.60,351,1291590000"; d="scan'208";a="73550947" Original-Received: from unknown (HELO nixey) ([193.50.110.208]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-AES128-SHA; 20 Jan 2011 16:16:36 +0100 In-Reply-To: (Hans Aberg's message of "Tue, 18 Jan 2011 10:57:02 +0100") User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.2 (gnu/linux) X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 1 =?iso-8859-1?Q?Pluvi=F4se?= an 219 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-BeenThere: bug-guile@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.bugs:4983 Archived-At: Hi Hans, Hans Aberg writes: > There seems to be a bug in GIT version when writing the 'values' data > type. > (list 2 (values 3 4) 5) > $1 =3D (2 3 5) This behavior is correct: in Guile 1.9, multiple-value returns are truncated any time the continuation expects fewer values. Here, the =E2=80=98values=E2=80=99 call returns 3 values, but the location = where it=E2=80=99s called expects only 1, hence the automatic truncation. > with the value 4 lost In guile-1.8.8, it would write > (2 # 5) The special =E2=80=9Cvalues=E2=80=9D type in older Guile versions was an ar= tifact of Guile=E2=80=99s implementation of multiple value support; objects of that t= ype are normally invisible to user code, but they would show up in such situations (R5RS doesn=E2=80=99t specify what to do in these cases, so it w= as valid, but implementation-specific behavior.) Thanks, Ludo=E2=80=99.