Date: Tue, 05 Jun 2012 15:10:06 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, "Andrey A. Chernov" <ache@FreeBSD.org>, freebsd-arch@FreeBSD.org Subject: Re: svn commit: r236582 - head/lib/libc/stdlib Message-ID: <86txypvr9t.fsf@ds4.des.no> In-Reply-To: <20120605074741.GA1391@garage.freebsd.pl> (Pawel Jakub Dawidek's message of "Tue, 5 Jun 2012 09:47:42 %2B0200") References: <201206042134.q54LYoVJ067685@svn.freebsd.org> <20120605074741.GA1391@garage.freebsd.pl>
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Pawel Jakub Dawidek <pjd@FreeBSD.org> writes: > Very interesting. However free(3) is always successful. Maybe we need > more context here, but the sentence above might talk about functions > that can either succeed or fail and such functions do set errno on > failure, but we don't know what they do to errno on success - they > sometimes interact with the errno, free(3) never does. Even if free() itself never fails, it might have side effects such as unmapping a slab, logging a KTR event etc. which can modify errno. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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