Date: Fri, 27 Feb 2015 08:46:32 -0700 From: Warner Losh <imp@bsdimp.com> To: Ed Maste <emaste@FreeBSD.org> Cc: Benjamin Kaduk <bjkfbsd@gmail.com>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, Andrew Turner <andrew@fubar.geek.nz>, Bruce Evans <brde@optusnet.com.au>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r279349 - head/sys/kern Message-ID: <E4396923-9EAD-4FFA-82B9-6831B385CA8E@bsdimp.com> In-Reply-To: <CAPyFy2AwRzvksD_5EcEU5EEvzR7tB1FOpAYzWc2nLtCnyGzaRQ@mail.gmail.com> References: <201502270256.t1R2uxnv085328@svn.freebsd.org> <20150227082257.3fb1081c@bender.Home> <20150227202646.I2088@besplex.bde.org> <CAJ5_RoCj_D06WK%2BUVrLXNouu252X-6oaaj68RJoQhDzx_wJyAA@mail.gmail.com> <CAPyFy2AwRzvksD_5EcEU5EEvzR7tB1FOpAYzWc2nLtCnyGzaRQ@mail.gmail.com>
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[-- Attachment #1 --] Sure wish my code review got this much love… Warner > On Feb 27, 2015, at 8:30 AM, Ed Maste <emaste@FreeBSD.org> wrote: > > On 27 February 2015 at 10:12, Benjamin Kaduk <bjkfbsd@gmail.com> wrote: >> >> As of r278229, the kernel is compiled with -fwrapv, so signed integer >> overflow in the FreeBSD kernel is defined behavior. > > This is primarily a workaround to accommodate existing code though; > it's not a result of an explicit decision that we want to support > signed integer overflow. > > -Ed > [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJU8JFYAAoJEGwc0Sh9sBEAas0P+wdoK/4EuuCxMhaGIF9YED7Q m7HHQf5LUIoo1HezWuIlhSD0i6QN6gG2cYfY7S/PKgfP4QiRDAlVDSt2oW4HPfEN mFGZ200IQkTomZVYcPsDP+2CP11jwLPqsEpvoSQovTYePMYQ2lYTKlrdnmkqeqee YXnnvCSwSDBNiFvrPgaRxnOuqmqYdx/z/CEgMrwtsZpJ5vHzI2GhSr+/9YFLgFaG 526o/f9vnf8PRDGVLWGxoTIfR5A8wEHmOl91V2e359ZSy7KXCj6CVEQLfd/iHAT0 5QC+vnv8Idv6jlYsGZbBM7hSZtufd+YuAaAo79zSzmn9U1yfvI26TfWTcO0cF5Ja q3U2bZE1Y01GSwWZu5eHk/v9R8b7hbU3Fi5EzN/S6MyDm5eur4/zF7eCZP+oQwu7 wpd4n7NN5aM/MbE+buFq3MWmW2Mq8Ejr6GP5n01Z8oloUul3UYvq6KeYREGAjsdN 6mqKkLAFwz/5WmCMu3yoesT/B+C8mjMheEoEC2hpsb9SUnzyyS2Mf9VOkSyvtYXa rhv9h1oGousRsWTQEhJy2Zy4I29PGxvi1IaA/0bGKB1AMnz0UW7vIGJDPauZn/yd 7j7UeGEL+s29mmXXhwe1HPpw7fh+jZ57wNCvdse02TXiRoq6xhCdl+sHAKiBhTmG OAyvb2lnBaVysEBw99MR =nX+e -----END PGP SIGNATURE-----
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