Date: Fri, 11 Mar 2016 11:07:34 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Willem Jan Withagen <wjw@digiware.nl> Cc: freebsd-toolchain@freebsd.org Subject: Re: Running Clang 3.7 on Current.... Message-ID: <7D7F6AF9-4E33-4BE3-85CD-2A02E3D209B5@FreeBSD.org> In-Reply-To: <56E28F8A.5000201@digiware.nl> References: <56E28F8A.5000201@digiware.nl>
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[-- Attachment #1 --] On 11 Mar 2016, at 10:27, Willem Jan Withagen <wjw@digiware.nl> wrote: > > CURRENT has recently received the upgrade to Clang 3.8. > > Now I run into the problem that some of the tests with Ceph are all of a > sudden failing.... > Mainly manifesting itself because of access errors thru pointers in > very complex records structs. (Which is almost always in C++ :) ) > Either pointers are 0x0, or to invalid memory. > > This can be attributed to a few things, some of them: > - changes in the Ceph code > Which is possible since I rebased since I started using 3.8. > - Subtle difference in corner cases, and overlaping structs get written > wrongly. > - A compiler bug > - other issues .... > > Ceph is run thru extensive tests while building, after which there is another > large QA testset run by the Ceph-team in their openstack with even more and > complexer tests. So real programming "errors" would be caught in this process. > > To exclude the compiler I'd like to run a compile/build/test run with 3.7 > Can I just install the ports 3.7 version without endangering my 3.8 current > installation. Then it'll just be set 'CC=clang37 C++=clang37++ make' and > see what comes of it. Yes, that should work without any problems. -Dimitry [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.29 iEYEARECAAYFAlbimO0ACgkQsF6jCi4glqMS3ACgkh/91BpelBXOO7i93/cQrBTo cJwAnA8lBXz/NXosL2lgXEhJAQOvNC60 =9fhA -----END PGP SIGNATURE-----
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