From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 113014 invoked by alias); 5 Oct 2017 19:09:57 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 112976 invoked by uid 89); 5 Oct 2017 19:09:57 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.5 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 spammy=HX-ME-Date:Oct, HX-ME-Date:0200, HX-ME-Date:2017, H*RU:sk:smtp.sm X-HELO: smtp.smtpout.orange.fr Received: from smtp13.smtpout.orange.fr (HELO smtp.smtpout.orange.fr) (80.12.242.135) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 05 Oct 2017 19:09:54 +0000 Received: from [192.168.0.11] ([82.236.99.246]) by mwinf5d71 with ME id Hv9r1w00C5Jxi8J03v9sBQ; Thu, 05 Oct 2017 21:09:52 +0200 X-ME-Helo: [192.168.0.11] X-ME-Auth: amVyb21lLmJvdWF0QHdhbmFkb28uZnI= X-ME-Date: Thu, 05 Oct 2017 21:09:52 +0200 X-ME-IP: 82.236.99.246 Subject: Re: a few tar.xz packages are bigger than their uncompressed tar To: cygwin@cygwin.com References: <960ca9df83cf80f4321a69f2d8b8c0ba@mail.kylheku.com> From: =?UTF-8?B?SsOpcsO0bWUgQm91YXQ=?= Message-ID: Date: Thu, 05 Oct 2017 19:09:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <960ca9df83cf80f4321a69f2d8b8c0ba@mail.kylheku.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2017-10/txt/msg00055.txt.bz2 Hello > No compression method need ever increase the > size of the datum by more than one bit. > > The compressed representation can begin with a header > bit which is 1 to indicate "compressed" and 0 to indicate > "stored without compression". Does the xz format provide a checksum even if the file is stored without compression ? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple