From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4551 invoked by alias); 30 May 2002 20:36:02 -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 4515 invoked by uid 71); 30 May 2002 20:36:01 -0000 Resent-Date: 30 May 2002 20:36:01 -0000 Resent-Message-ID: <20020530203601.4514.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-To: nobody@gcc.gnu.org Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, gnubug@skilbeck.com Received:(qmail 1082 invoked by uid 61); 30 May 2002 20:32:00 -0000 Message-Id:<20020530203200.1081.qmail@sources.redhat.com> Date: Thu, 30 May 2002 16:06:00 -0000 From: gnubug@skilbeck.com Reply-To: gnubug@skilbeck.com To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version:gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: c++/6874: deriving from zero-sized objects causes extraneous padding X-SW-Source: 2002-05/txt/msg00999.txt.bz2 List-Id: >Number: 6874 >Category: c++ >Synopsis: deriving from zero-sized objects causes extraneous padding >Confidential: no >Severity: critical >Priority: medium >Responsible: unassigned >State: open >Class: change-request >Submitter-Id: net >Arrival-Date: Thu May 30 13:36:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: gnubug@skilbeck.com >Release: 2.95.?? >Organization: >Environment: mips >Description: when deriving from a zero-sized struct, can we get the dummy single byte overlaid by the data members of the derived struct? >How-To-Repeat: struct Bob { void *operator new(size_t s); void operator delete(void *p); }; struct Bill : Bob { int Jack; }; ... sizeof(Bob) == 1 (Fine) sizeof(Bill) == 8 (sizeof(int) would be nice, like other compilers) >Fix: er... hack the gcc!? >Release-Note: >Audit-Trail: >Unformatted: