From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11277 invoked by alias); 21 May 2003 02:36:01 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 11246 invoked by uid 71); 21 May 2003 02:36:00 -0000 Resent-Date: 21 May 2003 02:36:00 -0000 Resent-Message-ID: <20030521023600.11244.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, yanliu@ca.ibm.com Received: (qmail 8159 invoked by uid 48); 21 May 2003 02:34:36 -0000 Message-Id: <20030521023436.8158.qmail@sources.redhat.com> Date: Wed, 21 May 2003 02:36:00 -0000 From: yanliu@ca.ibm.com Reply-To: yanliu@ca.ibm.com To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: c++/10893: wrong class mapping for empty bases X-SW-Source: 2003-05/txt/msg02226.txt.bz2 List-Id: >Number: 10893 >Category: c++ >Synopsis: wrong class mapping for empty bases >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: wrong-code >Submitter-Id: net >Arrival-Date: Wed May 21 02:36:00 UTC 2003 >Closed-Date: >Last-Modified: >Originator: Yan Liu >Release: unknown-1.0 >Organization: >Environment: linuxppc system, version 3.2 32bit mode. >Description: >How-To-Repeat: using -fdump-class-hierarchy option to get the class layout of the above testcase. You will find the empty base class E1 and E are at offset 4 in struct D1 class layout. There is a another data member also be mapped at the same address, which is wrong according to C++ ABI. >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: text/plain; name="kaka.C" Content-Disposition: inline; filename="kaka.C" struct E {}; struct E1: public E {}; struct E2: public E {}; struct D: public virtual E1, public E2 { }; struct D1: public D { int d1; }; D1 objd1;