[Vm-dev] New case to crash Spur VM

[Eliot Miranda]

Hi Denis,

    this is fixed in VMMaker.oscog-eem.2032.  I'll generate sources and
push to github presently.  Thanks for the test case.  This is a "new" case
the VM has to deal with with the "new" callPrimitive byte code.  I had
written the code to handle the case quite a while ago (2013?) but had
written incorrect code.

On Thu, Dec 8, 2016 at 9:31 AM, Eliot Miranda <eliot.miranda at gmail.com>
wrote:

> Hi Denis,
>
> On Mon, Dec 5, 2016 at 6:29 AM, Denis Kudriashov <dionisiydk at gmail.com>
> wrote:
>
>>
>>
>> 2016-12-05 15:25 GMT+01:00 Denis Kudriashov <dionisiydk at gmail.com>:
>>
>>> I found automated way how to check problem:
>>>
>>> p := [ Object basicSize ] fork.
>>> p suspend.
>>>
>>> 3 timesRepeat: [p step: p suspendedContext].
>>> newContext := p completeStep: p suspendedContext.
>>> newContext selector. "=> doesNotUnderstand:"
>>> newContext arguments first selector == 0
>>>
>>
> Thanks. This reproduces in the simulator.  The interpreter is accessing
> byte codes beyond the return at the end of Object>>#basicSize.  I should be
> bale to understand this better soon.
>
> And arguments of DNU message argument is also very strange:
>>
>> newContext arguments first arguments "an Array(0 Context>>jump)"
>>
>>
>>
>>
>
>
> --
> _,,,^..^,,,_
> best, Eliot
>



-- 
_,,,^..^,,,_
best, Eliot
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