From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17060 invoked by alias); 14 May 2013 14:48:50 -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 17051 invoked by uid 89); 14 May 2013 14:48:50 -0000 X-Spam-SWARE-Status: No, score=-8.0 required=5.0 tests=AWL,BAYES_00,KHOP_THREADED,RCVD_IN_HOSTKARMA_W,RCVD_IN_HOSTKARMA_WL,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.1 Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Tue, 14 May 2013 14:48:49 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r4EEmmst010506 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 14 May 2013 10:48:48 -0400 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r4EEmjQT007458; Tue, 14 May 2013 10:48:46 -0400 Message-ID: <51924ECD.10405@redhat.com> Date: Tue, 14 May 2013 14:48:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 MIME-Version: 1.0 To: Tom Tromey CC: gdb-patches@sourceware.org Subject: Re: [RFC, v2] Fix PR symtab/15391 References: <87hai57jsc.fsf@fleche.redhat.com> <51924AB0.7070402@redhat.com> <874ne57hl0.fsf@fleche.redhat.com> In-Reply-To: <874ne57hl0.fsf@fleche.redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-SW-Source: 2013-05/txt/msg00471.txt.bz2 On 05/14/2013 03:37 PM, Tom Tromey wrote: >>>>>> "Pedro" == Pedro Alves writes: > > Pedro> I believe left-shifting a negative number is actually undefined > Pedro> behavior. > > Whoops. Thanks for noticing. > I will fix that. > > Maybe we need a generic sign-extension function. > I see a lot of code around to do this various ways. That'd be fine with me. I'm suprised bfd doesn't have it. It uses that idiom in several places. -- Pedro Alves