From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5723 invoked by alias); 7 May 2003 16:51:19 -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 5704 invoked by uid 48); 7 May 2003 16:51:19 -0000 Date: Wed, 07 May 2003 16:51:00 -0000 Message-ID: <20030507165119.5703.qmail@sources.redhat.com> To: Toni.Kettula@hut.fi, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org From: ebotcazou@gcc.gnu.org Reply-To: ebotcazou@gcc.gnu.org, Toni.Kettula@hut.fi, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: target/10664: GCC incorrectly reorders loads and stores for a powerpc-unknown-eabi target when optimizing X-SW-Source: 2003-05/txt/msg00484.txt.bz2 List-Id: Synopsis: GCC incorrectly reorders loads and stores for a powerpc-unknown-eabi target when optimizing State-Changed-From-To: open->closed State-Changed-By: ebotcazou State-Changed-When: Wed May 7 16:51:18 2003 State-Changed-Why: Not a bug. Your code breaks the ISO C aliasing rules. GCC automatically turns on -fstrict-aliasing at -O2 so you need to fix your code or compile it with -fno-strict-aliasing. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10664