From owner-freebsd-current@freebsd.org  Wed Jul  8 16:17:01 2015
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Date: Wed, 08 Jul 2015 17:16:38 +0100
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Subject: Re: gettimeofday((void *)-1, NULL) implicates core dump on recent
 FreeBSD 11-CURRENT
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Oliver Pinter <oliver.pinter@hardenedbsd.org> wrote:

> On 7/8/15, O'Connor, Daniel <darius@dons.net.au> wrote:
> >
> > In defence of the test, the man page says it can return EFAULT.
>
> That's fine, but why changed the behaviour since 2015. May 27.? I have
> an older FreeBSD/HardenedBSD install, where this test passing. See
> some previous email in this thread.

That's why it's called 'undefined' :-)

Pedantically, being 'undefined', it's behaviour hasn't changed at all!