Re: Saving a project in Etoys

Christophe,

Indeed, it works in the latest version.

Thanks,

Edwin.

*;

Op wo 27 mei 2026, 18:42 schreef Thiede, Christoph via Squeak-dev <
[email protected]>:

> Hi Edwin,
>
> are you using Squeak 6.0? It seems we already fixed that issue in the
> latest version of the Squeak (the trunk):
> https://lists.squeakfoundation.org/archives/list/[email protected]/message/L4CQRDRU6TSTSHC3V52BBZ2IYNU6SPSX/ Hm
> ... we could backport that fix to 6.0 ...
> Anyway, glad you discovered this solution by yourself. :-)
>
> > Both solutions lead to a next error, but I would like to solve this one
> first.
>
> It sounds as if you already solved the bug correctly yourself.
>
> > So, could someone tell me if a compiledBlock can have instance variables
> or not?
>
> Instance variable belong to a class, not to a method or block. But yes,
> any kind of compiled code objects, i.e. compiled methods and compiled
> blocks, can reference instance variables via certain bytecode instructions.
> Here is one example of many:
>
> Bag>>sortedCounts
> "Answer with a collection of counts with elements, sorted by decreasing
> count."
>
> ^(Array new: contents size streamContents: [ :stream |
> contents associationsDo: [ :each |
> stream nextPut: each value -> each key ] ])
> sort: [:x :y | x >= y ];
> yourself
>
> Here, the compiled block [ :stream | ....] references the instance
> variable contents of the receiver.
>
> (To find all examples of such blocks, you could try this snippet:
> (self systemNavigation allMethodsSelect: [:m | true]) gather: [:m | m
> compiledMethod codeLiterals select: [:ea | (ea isKindOf: CompiledBlock)
> and: [ea hasInstVarRef]]])
>
> HTH! If you experience any other issues, please let us know!
>
> Best,
> Christoph
> ------------------------------
> *Von:* Edwin Ancaer <[email protected]>
> *Gesendet:* Mittwoch, 27. Mai 2026 16:51 Uhr
> *An:* The general-purpose Squeak developers list <
> [email protected]>
> *Betreff:* [squeak-dev] Saving a project in Etoys
>
> Hello,
>
> when saving a project in Etoys, I allways get the
> error: MessageNotUnderstood: CompiledBlock>>hasInstVarRef.
>
> And indeed, there is no method hasInstVarRef in the class CompiledBlock.
> There is one in CompiledMethod however. This makes me suppose that there
> once was a method hasInstVarRef in CompiledBlock, and it has been removed.
>
> Maybe because a compiledBlock cannot have instance variables?
> In that case , can I define a method hasInstVarRef that returns false in
> CompiledBlock?
>
> On the other hand, if I copy the method hasInstVarRef from CompiledMethod
> to CompiledBlock, that in itself works also.
>
> Both solutions lead to a next error, but I would like to solve this one
> first. So, could someone tell me if a compiledBlock can have instance
> variables or not?
>
> Kind regards,
>
> Edwin Ancaer
>
>
>
>
> *;
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