From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7445 invoked by alias); 7 Aug 2010 01:33:17 -0000 Received: (qmail 7413 invoked by uid 48); 7 Aug 2010 01:33:07 -0000 Date: Sat, 07 Aug 2010 01:33:00 -0000 Message-ID: <20100807013307.7412.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug c++/45221] missed optimization with multiple bases and up casting and dereferencing In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "pinskia at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2010-08/txt/msg00486.txt.bz2 ------- Comment #2 from pinskia at gcc dot gnu dot org 2010-08-07 01:33 ------- Confirmed, the issue has to do with multiple base classes and how NULL pointers are handled during an upcast. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |enhancement Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords| |missed-optimization Last reconfirmed|0000-00-00 00:00:00 |2010-08-07 01:33:06 date| | Summary|missed optimization on |missed optimization with |casting pointers even under |multiple bases and up |-O3 |casting and dereferencing http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45221