From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12982 invoked by alias); 12 Nov 2002 16:06:14 -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 12963 invoked by uid 71); 12 Nov 2002 16:06:13 -0000 Date: Tue, 19 Nov 2002 15:56:00 -0000 Message-ID: <20021112160613.12962.qmail@sources.redhat.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, From: Jan Hubicka Subject: Re: c++/8534: [mainline regression] When compiling qt contradicting aliasing class created for bitfield constructor Reply-To: Jan Hubicka X-SW-Source: 2002-11/txt/msg00591.txt.bz2 List-Id: The following reply was made to PR c++/8534; it has been noted by GNATS. From: Jan Hubicka To: Wolfgang Bangerth Cc: Jan Hubicka , gcc-gnats@gcc.gnu.org Subject: Re: c++/8534: [mainline regression] When compiling qt contradicting aliasing class created for bitfield constructor Date: Tue, 12 Nov 2002 16:57:59 +0100 > > > > > on other systems. Perhaps you have disabled check? > > > > > > No, I just looked it up, but I haven't. > > > > > > I think I have to leave this to you then. Thanks for your cooperation > > > anyway! > > OK, I will to analyze it bit more. > > I am quite puzzled why it reproduces on x86_64 only as the code path is > > quite generic. Perhaps the wrong alias set leaks there from some > > backend hook, but there are not many (only va_args fiddles aliasing as > > far as I can remember) > > My machine is presently used up with different tasks, but if I find some > spare cycles this afternoon, I'll retry with a clean build of gcc > (--enable-checking is the default on the main branch, right?). I've checked and it works for i386 compiler, so it looks like iteraction between the frondend and backend to cause the problem ;( Honza > > Cheers > Wolfgang > > ------------------------------------------------------------------------- > Wolfgang Bangerth email: bangerth@ticam.utexas.edu > www: http://www.ticam.utexas.edu/~bangerth >