From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25637 invoked by alias); 14 Mar 2003 15:48:30 -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 25611 invoked by uid 48); 14 Mar 2003 15:48:30 -0000 Date: Fri, 14 Mar 2003 15:48:00 -0000 Message-ID: <20030314154830.25610.qmail@sources.redhat.com> To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, gennadi.f@corigin.com, nobody@gcc.gnu.org From: ebotcazou@gcc.gnu.org Reply-To: ebotcazou@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, gennadi.f@corigin.com, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: c/9902: optimization level -O2/3 doesn't work correctly. X-SW-Source: 2003-03/txt/msg00869.txt.bz2 List-Id: Synopsis: optimization level -O2/3 doesn't work correctly. State-Changed-From-To: open->closed State-Changed-By: ebotcazou State-Changed-When: Fri Mar 14 15:48:30 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=9902