From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 51646 invoked by alias); 22 Jul 2016 11:18:49 -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 51636 invoked by uid 89); 22 Jul 2016 11:18:48 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.2 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=cannnot, Cannnot, a_thread_local, H*M:fd23 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Fri, 22 Jul 2016 11:18:38 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CCE08C05AA63; Fri, 22 Jul 2016 11:18:36 +0000 (UTC) Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6MBIZHK021713; Fri, 22 Jul 2016 07:18:35 -0400 Subject: Re: [RFA] PR python/20190 - compute TLS symbol without a frame To: Tom Tromey , Yao Qi References: <1464988574-17075-1-git-send-email-tom@tromey.com> <87oa6lt3pm.fsf@tromey.com> Cc: "gdb-patches@sourceware.org" From: Pedro Alves Message-ID: Date: Fri, 22 Jul 2016 11:18:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <87oa6lt3pm.fsf@tromey.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-07/txt/msg00292.txt.bz2 On 06/28/2016 10:15 PM, Tom Tromey wrote: >>>>>> "Yao" == Yao Qi writes: > > Yao> I don't understand why your original attempt fixing PR11803 > Yao> (https://sourceware.org/ml/gdb-patches/2010-07/msg00374.html) > Yao> doesn't work here. > > The difference is in what happens when you try to refer to a __thread > variable without an inferior. I think this was pointed out in one of > the follow-ups. > > With the original patch, the failure mode looks like: > > (gdb) print a_thread_local > Cannot find thread-local storage for process 0, executable file /home/tromey/gdb/build/gdb/testsuite/outputs/gdb.threads/tls/tls: > Cannot find thread-local variables on this target > > With the current patch the result is nicer: > > (gdb) print a_thread_local > Cannnot read `a_thread_local' without registers Is this / should this be tested somewhere? Thanks, Pedro Alves