From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23861 invoked by alias); 14 May 2002 15:11:45 -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 23839 invoked by uid 61); 14 May 2002 15:11:44 -0000 Date: Tue, 14 May 2002 08:11:00 -0000 Message-ID: <20020514151144.23838.qmail@sources.redhat.com> To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, pmassimi@ilog.fr, skal@planet-d.net From: jakub@gcc.gnu.org Reply-To: jakub@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, pmassimi@ilog.fr, skal@planet-d.net, gcc-gnats@gcc.gnu.org Subject: Re: optimization/6647: -O2 (or above) invalid optimization X-SW-Source: 2002-05/txt/msg00391.txt.bz2 List-Id: Synopsis: -O2 (or above) invalid optimization State-Changed-From-To: open->analyzed State-Changed-By: jakub State-Changed-When: Tue May 14 08:11:43 2002 State-Changed-Why: The optimization is valid, the source is not. The code does illegal type punning, see info gcc on -fstrict-aliasing for details. Either rewrite the code using unions, or use -fno-strict-aliasing. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6647