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Date:      Mon, 17 Aug 2009 09:09:22 -0500
From:      Mark Linimon <linimon@lonesome.com>
To:        Peter Vereshagin <peter@vereshagin.org>
Cc:        freebsd-bugs@FreeBSD.org, gavin@FreeBSD.org
Subject:   Re: bin/137869: cc --fast-math leads to nan% CPU consumption in ps and top
Message-ID:  <20090817140922.GA2365@lonesome.com>
In-Reply-To: <20090817130413.GA3314@screwed.box>
References:  <200908171137.n7HBbYPW005869@freefall.freebsd.org> <20090817130413.GA3314@screwed.box>

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On Mon, Aug 17, 2009 at 06:04:13PM +0500, Peter Vereshagin wrote:
> I know such the setting may be unsupported, my question is unobscurity
> and unobviousity of such a thing during the system 'world' upgrade, so
> this can scare any admin like me

What we mean by being "unsupported" is that "if you break it, you get
to diagnose why it breaks" :-)

Changing compiler flags, like changing the src tree itself (or running
-current), comes with the implicit contract that you need to understand
enough C and debugging techniques to be able to diagnose and contribute
fixes.

mcl



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