From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1314 invoked by alias); 29 Aug 2018 21:37:17 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 1303 invoked by uid 89); 29 Aug 2018 21:37:17 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-7.0 required=5.0 tests=AWL,BAYES_00,GIT_PATCH_1,KAM_NUMSUBJECT,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mx1.redhat.com Received: from mx3-rdu2.redhat.com (HELO mx1.redhat.com) (66.187.233.73) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 29 Aug 2018 21:37:15 +0000 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6859626A5E; Wed, 29 Aug 2018 21:37:14 +0000 (UTC) Received: from localhost (unused-10-15-17-196.yyz.redhat.com [10.15.17.196]) by smtp.corp.redhat.com (Postfix) with ESMTP id 480952166B41; Wed, 29 Aug 2018 21:37:14 +0000 (UTC) From: Sergio Durigan Junior To: Tom Tromey Cc: gdb-patches@sourceware.org, David Edelsohn Subject: Re: Breakage on builder RHEL-s390x-m64, revision 7a6dbc2fdb2323c35e981f93236f323e9d7c0b24 References: <7a6dbc2fdb2323c35e981f93236f323e9d7c0b24-master-breakage@gdb-build> <87tvndm8je.fsf@redhat.com> <87a7p4lx9u.fsf@redhat.com> <87bm9kx3ht.fsf@tromey.com> Date: Wed, 29 Aug 2018 21:37:00 -0000 In-Reply-To: <87bm9kx3ht.fsf@tromey.com> (Tom Tromey's message of "Wed, 29 Aug 2018 15:33:02 -0600") Message-ID: <8736uwlura.fsf@redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-IsSubscribed: yes X-SW-Source: 2018-08/txt/msg00783.txt.bz2 On Wednesday, August 29 2018, Tom Tromey wrote: >>>>>> "Sergio" == Sergio Durigan Junior writes: > > Sergio> After my last commit, which updated GDB's local copy of gnulib, I'm > Sergio> seeing a breakage on the RHEL 7.1 s390x builder (see the rest of the > Sergio> quoted message). Unfortunately I don't have easy access to a similar > Sergio> machine, so I would like to know if: > > Something fishy is going on that builder. I did a try run of my ubsan > series and got many errors like this: > > (gdb) break check_vx > /usr/include/c++/4.8.2/debug/vector: > Error: attempt to subscript container with out-of-bounds index gdb: > /home/dje/src/gcc-6-branch/libstdc++-v3/src/c++11/debug.cc:942: void > {anonymous}::print_string({anonymous}::PrintContext&, const char*, > const _Parameter*, std::size_t): Assertion `param_index < > num_parameters' failed. > > However I think this should only happen if libstdc++ debug mode is > enabled. (Is this correct? Maybe this is the error.) Thanks, Tom. This may have something to do with the errors, I think. > I did do some try runs in the past of libstdc++ debug mode. So, I am > wondering if there could somehow be stale .o files around. I don't see > how really -- I'd expect configure to make config.h, and for that to > force a full rebuild. But it still looks suspicious. Yeah, the BuildBot does a full rebuild for every commit. It deletes the previous build directory before starting the next build. -- Sergio GPG key ID: 237A 54B1 0287 28BF 00EF 31F4 D0EB 7628 65FC 5E36 Please send encrypted e-mail if possible http://sergiodj.net/