From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9390 invoked by alias); 18 Mar 2011 15:30:28 -0000 Received: (qmail 9370 invoked by uid 22791); 18 Mar 2011 15:30:27 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,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 15:30:25 +0000 Received: from eggs.gnu.org ([140.186.70.92]:41631) by fencepost.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1Q0bd6-0000fB-Fe for gcc@gnu.org; Fri, 18 Mar 2011 11:30:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q0bcw-00034B-R9 for gcc@gnu.org; Fri, 18 Mar 2011 11:30:20 -0400 Received: from smtp208.alice.it ([82.57.200.104]:46143) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q0bcw-00032u-G4 for gcc@gnu.org; Fri, 18 Mar 2011 11:30:10 -0400 Received: from [192.168.1.4] (79.52.240.105) by smtp208.alice.it (8.5.124.08) id 4C1A271614C80E3E; Fri, 18 Mar 2011 16:30:04 +0100 Message-ID: <4D837A7B.8020005@oracle.com> Date: Fri, 18 Mar 2011 15:30:00 -0000 From: Paolo Carlini User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110221 SUSE/3.1.8 Thunderbird/3.1.8 MIME-Version: 1.0 To: Diego Novillo CC: gcc@gnu.org, libstdc++@gcc.gnu.org Subject: Re: Spurious libstdc++ testsuite failures because of truncated buffered output References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 82.57.200.104 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/msg00263.txt.bz2 Hi > 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. Honestly, I know very little about the dejagnu buffering, but I'm having a quick look to the issue and I'm rather surprised that you are seeing it for these particular errors and nowhere else in the testsuite: here, on the libstdc++.log of x86_64-linux, I see just 9 candidates listed, and I'm pretty sure that in terms of error messages we have much, much, longer examples, when templates are involved in particular. What I'm missing? Paolo.