Date: Sun, 22 Mar 2015 23:09:40 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Garrett Cooper <yaneurabeya@gmail.com> 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: <72ABF177-320F-4CB1-8B05-36B133714C55@FreeBSD.org> In-Reply-To: <08BB20A2-7B71-4ECF-B246-F3096CABA5E9@gmail.com> 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>
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[-- Attachment #1 --] 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. -Dimitry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.27 iEYEARECAAYFAlUPPbEACgkQsF6jCi4glqO+EQCfRV0coLqzbq/b7W2YbXnWWhiA wwUAnjhvUfeCwftSkCrah8o/tttHyjk3 =PUdl -----END PGP SIGNATURE-----
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