From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 111537 invoked by alias); 20 Jul 2017 17:32:35 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 111520 invoked by uid 89); 20 Jul 2017 17:32:35 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: EUR02-VE1-obe.outbound.protection.outlook.com From: Wilco Dijkstra To: "Ellcey, Steve" , Carlos O'Donell CC: "libc-alpha@sourceware.org" , nd Subject: Re: long double test failures due to underflow exception getting set? Date: Thu, 20 Jul 2017 17:32:00 -0000 Message-ID: authentication-results: sourceware.org; dkim=none (message not signed) header.d=none;sourceware.org; dmarc=none action=none header.from=arm.com; x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM5PR0802MB2609;7: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 x-ms-office365-filtering-correlation-id: 85327e43-6deb-499b-749e-08d4cf954c01 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(2017030254075)(48565401081)(300000503095)(300135400095)(2017052603031)(201703131423075)(201703031133081)(201702281549075)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095);SRVR:AM5PR0802MB2609; x-ms-traffictypediagnostic: AM5PR0802MB2609: nodisclaimer: True x-exchange-antispam-report-test: UriScan:(236129657087228); x-microsoft-antispam-prvs: x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(601004)(2401047)(8121501046)(5005006)(2017060910075)(100000703101)(100105400095)(93006095)(93001095)(3002001)(10201501046)(6055026)(6041248)(201703131423075)(201702281528075)(201703061421075)(201703061406153)(20161123564025)(20161123562025)(20161123560025)(20161123558100)(20161123555025)(6072148)(100000704101)(100105200095)(100000705101)(100105500095);SRVR:AM5PR0802MB2609;BCL:0;PCL:0;RULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095);SRVR:AM5PR0802MB2609; x-forefront-prvs: 0374433C81 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(6009001)(39410400002)(39400400002)(39860400002)(39840400002)(39850400002)(39450400003)(24454002)(7696004)(6246003)(86362001)(5250100002)(7736002)(478600001)(38730400002)(3280700002)(305945005)(189998001)(74316002)(72206003)(6436002)(66066001)(33656002)(2906002)(5660300001)(8936002)(3846002)(102836003)(6116002)(4326008)(6506006)(9686003)(53936002)(55016002)(81166006)(54356999)(25786009)(50986999)(3660700001)(99286003)(8676002)(54906002)(14454004)(229853002)(2900100001);DIR:OUT;SFP:1101;SCL:1;SRVR:AM5PR0802MB2609;H:AM5PR0802MB2610.eurprd08.prod.outlook.com;FPR:;SPF:None;MLV:sfv;LANG:en; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Jul 2017 17:32:29.7702 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM5PR0802MB2609 X-SW-Source: 2017-07/txt/msg00749.txt.bz2 Carlos wrote: > Neither DJ nor Szabolcs's glibc 2.26 builds showed those failures: Actually Szabolcs mentioned trunk GCC has some issues with long double. I don't know the details but I imagine GCC lifts some FP operations across fegetenv/fesetenv calls (or similar) which may be a bug depending on the optimization setting (I guess you need -ftrapping-math to block such liftin= g). Wilco