From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21514 invoked by alias); 18 Mar 2011 15:04:39 -0000 Received: (qmail 21496 invoked by uid 22791); 18 Mar 2011 15:04:38 -0000 X-SWARE-Spam-Status: No, hits=-1.5 required=5.0 tests=AWL,BAYES_20,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from fencepost.gnu.org (HELO fencepost.gnu.org) (140.186.70.10) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 18 Mar 2011 15:04:32 +0000 Received: from eggs.gnu.org ([140.186.70.92]:56153) by fencepost.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1Q0bE6-0007vF-VD for gcc@gnu.org; Fri, 18 Mar 2011 11:04:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q0bE5-00057p-RP for gcc@gnu.org; Fri, 18 Mar 2011 11:04:30 -0400 Received: from smtp-out.google.com ([74.125.121.67]:25161) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q0bE5-00057c-JG for gcc@gnu.org; Fri, 18 Mar 2011 11:04:29 -0400 Received: from hpaq5.eem.corp.google.com (hpaq5.eem.corp.google.com [172.25.149.5]) by smtp-out.google.com with ESMTP id p2IF4SOg008239 for ; Fri, 18 Mar 2011 08:04:28 -0700 Received: from vws18 (vws18.prod.google.com [10.241.21.146]) by hpaq5.eem.corp.google.com with ESMTP id p2IF4QPp004924 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Fri, 18 Mar 2011 08:04:27 -0700 Received: by vws18 with SMTP id 18so4182644vws.13 for ; Fri, 18 Mar 2011 08:04:26 -0700 (PDT) MIME-Version: 1.0 Received: by 10.52.94.179 with SMTP id dd19mr1680761vdb.101.1300460666303; Fri, 18 Mar 2011 08:04:26 -0700 (PDT) Received: by 10.220.16.129 with HTTP; Fri, 18 Mar 2011 08:04:26 -0700 (PDT) Date: Fri, 18 Mar 2011 15:04:00 -0000 Message-ID: Subject: Spurious libstdc++ testsuite failures because of truncated buffered output From: Diego Novillo To: gcc@gnu.org, libstdc++@gcc.gnu.org Content-Type: text/plain; charset=UTF-8 X-System-Of-Record: true X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 74.125.121.67 X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2011-03/txt/msg00262.txt.bz2 I am getting several failures in decimal/mixed-mode_neg.cc: FAIL: decimal/mixed-mode_neg.cc (test for errors, line 195) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 196) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 197) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 198) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 199) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 200) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 201) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 202) FAIL: decimal/mixed-mode_neg.cc (test for errors, line 203) This test expects syntax errors in all these lines, and the compiler is indeed flagging them but the output from the compiler is so big that dejagnu truncates it. The testsuite never sees the error messages starting at line 195 (I can see the output truncated in libstdc++.log). Is there a way to increase dejagnu's buffering? This does not happen, if I simply run the build in a shallower build tree, but that is not a viable alternative. Any suggestions on how to address this, short of butchering this test? Thanks. Diego.