From debbugs-submit-bounces@debbugs.gnu.org Sun Apr 11 20:21:36 2021 Received: (at submit) by debbugs.gnu.org; 12 Apr 2021 00:21:36 +0000 Received: from localhost ([127.0.0.1]:56061 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lVkKd-00065i-Ro for submit@debbugs.gnu.org; Sun, 11 Apr 2021 20:21:36 -0400 Received: from lists.gnu.org ([209.51.188.17]:52348) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lVkKc-00065b-20 for submit@debbugs.gnu.org; Sun, 11 Apr 2021 20:21:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36234) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lVkKa-0006Y4-De for bug-gzip@gnu.org; Sun, 11 Apr 2021 20:21:33 -0400 Received: from vmicros1.altlinux.org ([194.107.17.57]:57812) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lVkKW-0003D3-Jg for bug-gzip@gnu.org; Sun, 11 Apr 2021 20:21:30 -0400 Received: from mua.local.altlinux.org (mua.local.altlinux.org [192.168.1.14]) by vmicros1.altlinux.org (Postfix) with ESMTP id 7F82672C8B1 for ; Mon, 12 Apr 2021 03:21:24 +0300 (MSK) Received: by mua.local.altlinux.org (Postfix, from userid 508) id 6DEA47CC8A7; Mon, 12 Apr 2021 03:21:24 +0300 (MSK) Date: Sun, 11 Apr 2021 20:00:00 +0000 From: "Dmitry V. Levin" To: bug-gzip@gnu.org Subject: [PATCH] gzip.c: use a more portable alignment Message-ID: <20210411200000.GA1991@altlinux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=194.107.17.57; envelope-from=ldv@altlinux.org; helo=vmicros1.altlinux.org X-Spam_score_int: -2 X-Spam_score: -0.3 X-Spam_bar: / X-Spam_report: (-0.3 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_03_06=1.592, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Spam-Score: -0.3 (/) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.3 (-) The alignment of 8192 introduced by commit be0c5581e38332b2ffa8a4cf92076cfde02872b4 is not quite portable: eu-elflint --gnu-ld complains about the result gzip executable with the following diagnostics: section [25] '.bss' not fully contained in segment of program header entry 6 * gzip.c [__alignas_is_defined] (BUFFER_ALIGNED): Decrease alignment from 8192 back to 4096. --- gzip.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/gzip.c b/gzip.c index 8b8b0bb..0123f82 100644 --- a/gzip.c +++ b/gzip.c @@ -132,10 +132,10 @@ static char const *const license_msg[] = { /* With IBM_Z_DFLTCC, DEFLATE COMPRESSION works faster with page-aligned input and output buffers, and requires page-aligned windows; the alignment requirement is 4096. On other platforms - alignment doesn't hurt, and alignment up to 8192 is portable so + alignment doesn't hurt, and alignment up to 4096 is portable so let's do that. */ #ifdef __alignas_is_defined -# define BUFFER_ALIGNED alignas (8192) +# define BUFFER_ALIGNED alignas (4096) #else # define BUFFER_ALIGNED /**/ #endif -- ldv From debbugs-submit-bounces@debbugs.gnu.org Sun Apr 11 21:29:02 2021 Received: (at 47715) by debbugs.gnu.org; 12 Apr 2021 01:29:02 +0000 Received: from localhost ([127.0.0.1]:56076 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lVlNu-0007h7-Er for submit@debbugs.gnu.org; Sun, 11 Apr 2021 21:29:02 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:47340) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lVlNs-0007gY-1T for 47715@debbugs.gnu.org; Sun, 11 Apr 2021 21:29:00 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id C11251600BE; Sun, 11 Apr 2021 18:28:53 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 7wQivDDzaeRq; Sun, 11 Apr 2021 18:28:53 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 28FD91600D0; Sun, 11 Apr 2021 18:28:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id CZZ5MoWjS0El; Sun, 11 Apr 2021 18:28:53 -0700 (PDT) Received: from [192.168.1.9] (cpe-172-91-119-151.socal.res.rr.com [172.91.119.151]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id C44F11600BE; Sun, 11 Apr 2021 18:28:52 -0700 (PDT) Subject: Re: bug#47715: [PATCH] gzip.c: use a more portable alignment To: "Dmitry V. Levin" References: <20210411200000.GA1991@altlinux.org> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <391f6f01-5beb-8454-5d25-b15f4e68da39@cs.ucla.edu> Date: Sun, 11 Apr 2021 18:28:52 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210411200000.GA1991@altlinux.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 47715 Cc: 47715@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) Thanks, I installed that. 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