From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Newsgroups: gmane.lisp.guile.bugs Subject: bug#17466: unexpected bytevector contents with get-bytevector-n Date: Wed, 28 May 2014 17:26:47 +0200 Message-ID: <877g55exfs.fsf@gnu.org> References: <536F5847.6060004@posteo.eu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1401290854 19643 80.91.229.3 (28 May 2014 15:27:34 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 28 May 2014 15:27:34 +0000 (UTC) Cc: 17466@debbugs.gnu.org To: J Kalbhenn Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Wed May 28 17:27:27 2014 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wpfl7-00044G-GU for guile-bugs@m.gmane.org; Wed, 28 May 2014 17:27:17 +0200 Original-Received: from localhost ([::1]:42963 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wpfl7-0005Cn-4C for guile-bugs@m.gmane.org; Wed, 28 May 2014 11:27:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36927) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wpfky-0005Ae-27 for bug-guile@gnu.org; Wed, 28 May 2014 11:27:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wpfks-0001z4-BF for bug-guile@gnu.org; Wed, 28 May 2014 11:27:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:35807) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wpfks-0001z0-81 for bug-guile@gnu.org; Wed, 28 May 2014 11:27:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Wpfkr-0002T6-Q8 for bug-guile@gnu.org; Wed, 28 May 2014 11:27:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Wed, 28 May 2014 15:27:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17466 X-GNU-PR-Package: guile X-GNU-PR-Keywords: Original-Received: via spool by 17466-submit@debbugs.gnu.org id=B17466.14012908209480 (code B ref 17466); Wed, 28 May 2014 15:27:01 +0000 Original-Received: (at 17466) by debbugs.gnu.org; 28 May 2014 15:27:00 +0000 Original-Received: from localhost ([127.0.0.1]:34684 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Wpfkl-0002Sm-Uw for submit@debbugs.gnu.org; Wed, 28 May 2014 11:26:59 -0400 Original-Received: from hera.aquilenet.fr ([141.255.128.1]:48353) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Wpfkf-0002SV-Ii for 17466@debbugs.gnu.org; Wed, 28 May 2014 11:26:53 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id 04BAA2B39; Wed, 28 May 2014 17:26:49 +0200 (CEST) Original-Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1MK8Gkgt9EmP; Wed, 28 May 2014 17:26:48 +0200 (CEST) Original-Received: from pluto (reverse-83.fdn.fr [80.67.176.83]) by hera.aquilenet.fr (Postfix) with ESMTPSA id A22F627EE; Wed, 28 May 2014 17:26:48 +0200 (CEST) In-Reply-To: <536F5847.6060004@posteo.eu> (J. Kalbhenn's message of "Sun, 11 May 2014 13:00:23 +0200") User-Agent: Gnus/5.130009 (Ma Gnus v0.9) Emacs/24.3 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.bugs:7463 Archived-At: Hello, J Kalbhenn skribis: > (import (rnrs io ports) (ice-9 pretty-print)) > (define (problem-part port) (pretty-print (get-bytevector-n port 4096))) > > (let loop ((count 100)) > (if (> count 0) > (begin (call-with-input-string "22222222222222222222" problem-part) > (loop (- count 1))))) > __ > > when i run it i get output with portions like this > -- > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 16 224 240 0 0 0 0 0 50 50 50 50) > #vu8(50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50) > -- > > and i would expect the bytevector to always be the same. Indeed. I=E2=80=99ve been experiencing that in a more complex scenario too: . The guts of the problem seems to be GC_REALLOC. I=E2=80=99m debugging it n= ow and your reduced test case will be helpful. Ludo=E2=80=99.