From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24172 invoked by alias); 28 Mar 2003 22:14:42 -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 24152 invoked by uid 48); 28 Mar 2003 22:14:41 -0000 Date: Fri, 28 Mar 2003 22:16:00 -0000 Message-ID: <20030328221441.24151.qmail@sources.redhat.com> To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, warren_baird@cimmetry.com From: bangerth@dealii.org Reply-To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, warren_baird@cimmetry.com, gcc-gnats@gcc.gnu.org Subject: Re: optimization/10258: byteswapping code fails in -O2 X-SW-Source: 2003-03/txt/msg02018.txt.bz2 List-Id: Synopsis: byteswapping code fails in -O2 State-Changed-From-To: open->feedback State-Changed-By: bangerth State-Changed-When: Fri Mar 28 22:14:41 2003 State-Changed-Why: Does the result change if you add to -O2 the flag -fno-strict-aliasing? You might want to review the section on this flag in the manual? -fstrict-aliasing is switched on by -O2. W. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10258