From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10982 invoked by alias); 22 Feb 2003 20:21:54 -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 10963 invoked by uid 48); 22 Feb 2003 20:21:54 -0000 Date: Sat, 22 Feb 2003 20:21:00 -0000 Message-ID: <20030222202154.10962.qmail@sources.redhat.com> To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, matze@braunis.de, 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, matze@braunis.de, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: optimization/9808: optimisation bug in (float*) to (int*) conversion X-SW-Source: 2003-02/txt/msg01129.txt.bz2 List-Id: Synopsis: optimisation bug in (float*) to (int*) conversion State-Changed-From-To: open->closed State-Changed-By: ebotcazou State-Changed-When: Sat Feb 22 20:21:54 2003 State-Changed-Why: Not a bug. The original code breaks the ISO C++ aliasing rules (a 'long' is aliasing a 'double'). GCC automatically turns on -fstrict-aliasing at -O2 so you must either fix the code or compile with -fno-strict-aliasing. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9808