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Date:      Tue, 29 Oct 2002 16:00:34 -0700
From:      Nate Williams <nate@yogotech.com>
To:        Clive Lin <clive@tongi.org>
Cc:        Nate Williams <nate@yogotech.com>, Bill Huey <billh@gnuppy.monkey.org>, freebsd-java@FreeBSD.org
Subject:   Re: awt app always abort when exit using hotspot vm under STABLE
Message-ID:  <15807.4882.989006.856989@emerger.yogotech.com>
In-Reply-To: <20021029224956.GB6868@epaper.eslitebooks.com>
References:  <3DB61145.8050207@mail.gddsn.org.cn> <20021028081346.GA11956@gnuppy.monkey.org> <20021029202721.GA5842@epaper.eslitebooks.com> <15806.61634.620588.347335@emerger.yogotech.com> <20021029221404.GA6350@epaper.eslitebooks.com> <15807.2424.779969.97960@emerger.yogotech.com> <20021029223401.GA6868@epaper.eslitebooks.com> <15807.3392.486527.295223@emerger.yogotech.com> <20021029224956.GB6868@epaper.eslitebooks.com>

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> ARJ -> No
> ARj -> Yes
> ArJ -> No
> aRJ -> No
> Arj -> Yes
> aRj -> Yes
> arJ -> No
> arj -> Yes

Re-stated a bit differently.
jRA - YES
jRa - YES
jra - YES
jrA - YES

JRA - NO
JRa - NO
Jra - NO
JrA - NO

So, the magic flag appears to be 'J'.  Others are essentially no-ops.

This means that someone is attempting to read freed memory, since the
'J' option re-initializes freed memory with (essentially) garbage, and
anyone that reads from this will get garbage.

Given that it cores, I expect it's a pointer reference since I'm
guessing it's trying to access memory location 0xd0d0d0d0 or somesuch as
getting a SIGABT, although I would have expected a SIGSEGV in that case.

In any case, thanks for the backtrace and the sleuthing.


Nate
> On Tue, Oct 29, 2002 at 03:35:44PM -0700, Nate Williams wrote:
> > > > Ok, so 'Aj' should work, right?  Can you try that.
> > > > 
> > > 
> > > Yes, Aj do work.
> > 
> > Thanks, how about AR?  (I suspect it won't, but if it does, it implies
> > something is wrong with the collector).
> > 
> > 
> > 
> > Nate

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