I added this patch to the Inbox to make it easier to load it. Evaluate the 
following to load it into your updated trunk image:

Installer squeak
 	project: 'inbox';
 	install: 'Kernel-ul.656'


Levente

On Mon, 5 Dec 2011, Eliot Miranda wrote:

> Hi Marcus,
>
> On Mon, Dec 5, 2011 at 5:58 AM, Marcus Denker <marcus.denker at inria.fr>wrote:
>
>> Hi,
>>
>> With this change set, we get an error when doing the following:
>>
>> In the workspace do a "debug it" on this code:
>>
>> Transcript show: Class name
>>
>
> Thanks very much for this simple test case :)  OK, the attached is an
> improvement.  Please as many people test it as possible.
>
>
>> then two times "step over" --> Subscript out of bounds error. Without
>> the change it works.
>>
>> On Wed, Nov 16, 2011 at 8:58 PM, Eliot Miranda <eliot.miranda at gmail.com>
>> wrote:
>>> Hi All,
>>>
>>>     I've found a bug in ContextPart>>#runUntilErrorOrReturnFrom: that in
>> a
>>> certain rare circumstance causes the method to peel back too much of the
>>> stack.  This method is used in the debugger (e.g. completeStep: et al)
>> but
>>> also in Process termination.  So it is right at the heart of the system.
>>>  I'm loath to simply commit it  I'd really appreciate y'all testing with
>> the
>>> fix and reporting any changes you see.  It does not affect the trunk test
>>> suite (there is a test, WeakSetInspectorTest, which is unreliable, but
>> apart
>>> form that no observed effects).  So, brave souls, please try with the
>>> attached and see if you come to grief or not.
>>> --
>>> thanks,
>>> Eliot
>>>
>>
>>
>>
>> --
>> --
>> Marcus Denker  --  denker at acm.org
>> http://www.marcusdenker.de
>>
>>
>
>
> -- 
> best,
> Eliot
>