Hi Denis,

On Mon, Dec 5, 2016 at 6:29 AM, Denis Kudriashov <dionisiydk@gmail.com> wrote:

2016-12-05 15:25 GMT+01:00 Denis Kudriashov <dionisiydk@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