From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 64968 invoked by alias); 20 Jul 2017 16:28:06 -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 64952 invoked by uid 89); 20 Jul 2017 16:28:05 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.3 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= X-HELO: NAM02-BL2-obe.outbound.protection.outlook.com Authentication-Results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=cavium.com; Message-ID: <1500568076.28549.24.camel@cavium.com> Subject: Re: long double test failures due to underflow exception getting set? From: Steve Ellcey Reply-To: sellcey@cavium.com To: Carlos O'Donell , libc-alpha@sourceware.org Date: Thu, 20 Jul 2017 16:28:00 -0000 In-Reply-To: <041f2faf-c501-c70d-0c59-627fd8972543@redhat.com> References: <201707192134.v6JLYQXo004521@sellcey-dt.caveonetworks.com> <041f2faf-c501-c70d-0c59-627fd8972543@redhat.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MWHPR15CA0069.namprd15.prod.outlook.com (10.174.254.31) To MWHPR07MB3469.namprd07.prod.outlook.com (10.164.192.20) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ac9fda5f-64eb-4804-5833-08d4cf8c49a6 X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(300000503095)(300135400095)(201703131423075)(201703031133081)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095);SRVR:MWHPR07MB3469; X-Microsoft-Exchange-Diagnostics: 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X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR07MB3469 X-SW-Source: 2017-07/txt/msg00748.txt.bz2 Interesting, I just built and tested glibc with GCC 5.4 and I did not get these failures.  When I build and test with the latest ToT GCC I do get the failures.  I will continue to see if I can figure out what is going on. Steve Ellcey On Wed, 2017-07-19 at 20:58 -0400, Carlos O'Donell wrote: > On 07/19/2017 05:34 PM, Steve Ellcey wrote: > > > > Is anyone else seeing these failures with the latest glibc sources? > > I am getting them on aarch64 (standard ToT sources) and was > > wondering > > if this is an aarch64 specific problem or a more generic > > bug.  Since > > all the failures involve long double I don't think they are using  > > aarch64 specific code, but I could be wrong. > > > > FAIL: math/test-ldouble-cexp > > FAIL: math/test-ldouble-exp > > FAIL: math/test-ldouble-finite-cexp > > FAIL: math/test-ldouble-finite-exp > > > > I think these failures are new and all of the failures listed are > > about the Underflow exception being set: > > > > I.e. > > > > testing long double (without inline functions) > > Failure: exp (-0x1p-10000): Exception "Underflow" set > > Failure: exp (-0x2p-16384): Exception "Underflow" set > > Failure: exp (-0x4p-16384): Exception "Underflow" set > > Failure: exp (-0x4p-16448): Exception "Underflow" set > > Failure: exp (-0x4p-16496): Exception "Underflow" set > > Failure: exp (-0x8p-16448): Exception "Underflow" set > Neither DJ nor Szabolcs's glibc 2.26 builds showed those failures: > https://sourceware.org/glibc/wiki/Release/2.26 >