What i find fun with this bug, that it is one that is just annoying
(you just get a DNU, then you restart and it works).
Comparing to hard VM crash we experienced before... :)

On 27 June 2013 20:23, [email protected] <[email protected]> wrote:
> I do have that issue often when loading my devstack configuration on Pharo
> 2.0 (as in http://www.smalltalkhub.com/#!/~philippeback/HOWebStack)
>
> Doing everything again fixes the problem but fingers crossed are required.
>
> It is a really annoying bug indeed.
>
> Phil
>
>
>
> ---
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>
> On Thu, Jun 27, 2013 at 3:22 PM, Igor Stasenko <[email protected]> wrote:
>>
>> On 27 June 2013 14:13, Max Leske <[email protected]> wrote:
>> > Hi
>> >
>> > I've been seeing a particular bug that I can only see when using the
>> > PharoVM and I was wondering if anybody else has been having the same issue.
>> >
>> > Under certain condition, a debugger will open displaying "SmallInteger
>> > does not understand <some message>". The stack top contains an integer
>> > (something of the form 138402, not sure how many digits), which explains 
>> > the
>> > message. However, the situation actually looks like this:
>> >
>> >         htmil anchor
>> >                 id: 'foo';
>> >                 …
>> >
>> > In this example, the error would be "SmallInteger does not understand
>> > #id:". So the stack top contains an integer instead of the receiver.
>> > Restarting the execution of the method and proceeding fixes the problem.
>> > I think I've seen that (using seaside), a new session will trigger the bug
>> > again.
>> >
>> > Apart from Seaside, I've also seen the same problem when loading Roberto
>> > Minelli's DevFlow into a Pharo 2.0 image. The debugger will open on a
>> > Metacello method.
>> >
>> > VM: latest PharoVM
>> > image: latest 2.0
>> > try this config: http://smalltalkhub.com/#!/~RobertoMinelli/DevFlow with
>> > "ConfigurationOfDevFlow loadDevelopment"
>> >
>> >
>> > Has anybody else encountered this?
>> >
>> yes, couple months ago we had this issue.
>> It looks like it doesn't likes some bytecode sequence (which causing
>> this)..
>> and this sequence is not appears that often.
>>
>> If i remember Esteban said that changing compiler optimizations flags
>> fixed it..
>> but perhaps not on platform , you running on?
>>
>> > Cheers,
>> > Max
>>
>>
>>
>> --
>> Best regards,
>> Igor Stasenko.
>>
>



-- 
Best regards,
Igor Stasenko.

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