I can't check it on Squeak anymore. Squeak not works on Mac Sierra for me.

I attach crash file.

When I try it second time. After step over I got DNU error which shows very strange thing that 0 integer was sent as message. And when I click on basicSize method image crashed.

Then I try to get same behaviour but can't. Image crash when I press step over debugger button. (dump file about this case)

2016-12-05 14:33 GMT+01:00 David T. Lewis <lewis@mail.msen.com>:

On Mon, Dec 05, 2016 at 01:10:28PM +0100, Denis Kudriashov wrote:
>
> Hi.
>
> I just remind about it
>
> 2016-04-15 15:42 GMT+02:00 Denis Kudriashov <dionisiydk@gmail.com>:
>
> > Hi
> >
> > In debugger (Squeak or Pharo) try "step over" for expression "Object
> > basicSize": image will crash.

I just tried on Squeak 64 bit Spur and no crash. Is there a specific VM version
that has the problem?

Dave

> >
> > We have opened issue for this in Pharo tracker 17962
> > <https://pharo.fogbugz.com/f/cases/17962/Image-is-crashed-when-step-over-Object-basicSize-in-debugger>
> >