[Vm-dev] Re: [squeak-dev] Re: Some notes about SqueakMap dead in trunk images...

Levente Uzonyi leves at elte.hu
Mon Mar 15 23:08:36 UTC 2010

On Mon, 15 Mar 2010, Andreas Raab wrote:

> On 3/15/2010 1:26 PM, Göran Krampe wrote:
>> But so far I am unclear as to why this is so. I have now tested LOTS of
>> trunk images backwards and it seems to be broken all the way down to
>> 7179! Funny thing is - my 3.10.1-7175 image works fine.
>> And there may be a hint here: The 7175 image can be opened by an old
>> 3-9-8 VM. But the later 7179 images can NOT be opened due to some kind
>> of image format change.
> Bingo. The issue is that the image format changed for closures and there's 
> been a bug in the image segment loading code that makes the primitive fail in 
> cases where the image format is older, but compatible. I've posted a fix for 
> that in VMMaker but I really think SM should stop using image segments for 
> data exchange. Image segments are not a reliable long-term interchange format 
> in an evolving system.
> Obviously, this fix requires new VMs.

Did you check if this fix solves the SqueakMap issue?


> Cheers,
>  - Andreas

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