Date: Sun, 22 Mar 2015 15:11:22 -0700 From: Garrett Cooper <yaneurabeya@gmail.com> To: Dimitry Andric <dim@FreeBSD.org> Cc: "freebsd-testing@freebsd.org" <freebsd-testing@freebsd.org>, freebsd-current Current <freebsd-current@freebsd.org>, "jenkins-admin@freebsd.org" <jenkins-admin@freebsd.org>, freebsd-toolchain@freebsd.org Subject: Re: Jenkins build is still unstable: FreeBSD_HEAD-tests2 #867 Message-ID: <FA0D53E2-8298-44C9-9C40-B97D17E3A7BB@gmail.com> In-Reply-To: <72ABF177-320F-4CB1-8B05-36B133714C55@FreeBSD.org> References: <1669399171.13.1427029129760.JavaMail.jenkins@jenkins-9.freebsd.org> <799490341.14.1427048792932.JavaMail.jenkins@jenkins-9.freebsd.org> <CAG=rPVeyamLPnC5i05_=Ub0D%2BV256U_8t8R5tfDitC=NkjBOFQ@mail.gmail.com> <BE5A3694-E1D1-4A47-8707-D6214E997363@FreeBSD.org> <494AEF4B-0AF8-449A-9B41-9AC4F4552AF0@FreeBSD.org> <CAG=rPVchdm_VaTshq%2BRN%2BkHX0YC0_Tsx22oJVNNnoOamdm00mQ@mail.gmail.com> <864EB4DB-2DF7-4294-9498-95E54E6B49CC@FreeBSD.org> <CAG=rPVdP_TAmerKh_82EravEw=sCj4LyEBu-NfGCK0Obg=HMVw@mail.gmail.com> <08BB20A2-7B71-4ECF-B246-F3096CABA5E9@gmail.com> <72ABF177-320F-4CB1-8B05-36B133714C55@FreeBSD.org>
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[-- Attachment #1 --] On Mar 22, 2015, at 15:09, Dimitry Andric <dim@FreeBSD.org> wrote: > On 22 Mar 2015, at 23:04, Garrett Cooper <yaneurabeya@gmail.com> wrote: >> >> On Mar 22, 2015, at 15:01, Craig Rodrigues <rodrigc@FreeBSD.org> wrote: >> >> ... >> >>> OK, converting expr.y to use unsigned integers would require a bit of work. >>> >>> Can you commit your patch to the Makefile? It fixes the problem for now. >> >> +1 >> >> I’d still like to know why clang 3.5 doesn’t have this behavior though — there might be other potential issues lurking around that need to be solved (either here, in ports, or both). > > Because this version optimizes better around undefined behavior. There > are most likely many issues lurking around, and most certainly in ports. > > I would recommend using UBSan to tackle this kind of thing. I hope this got a ports tinderbox run first… Adding UBSan to tinderbox runs for toolchain upgrades [in the future] might be a good idea. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJVDz4KAAoJEMZr5QU6S73e3rcH/1ZT6l5PyKPV3xGX0YGSjSPn J2bSOr8vpBx60voNtrHLslpsqUQEDVXGSing0mhXxHDNx4+QzZqCvP6N3BRXr02c mYm/ikZBJ0fE6AjplOKX4DrVUh65PEGnp9+9z/3XezBebvQKmdbt2Uo3mHfQUQcq 08wj/nc5wtpf2W3bcCDE6iYU1bwWDZYpbwlTQjCpegzWW2Q+EDYMdIE2bEXkEBmq up55M5pVqbIhelY1D/d5BlW/PYDGKop5JDDmH8STiG1eSBNuUJtv6T/9+3inVZAk y9iWvP0GzkE+oD8mJOKVZ1MFF/Z24qzH0VszhWvdBW41r4aIVyj4SK5UFtTTnCY= =jFNA -----END PGP SIGNATURE-----
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