modifying a literal

> The following code freeze the image, and I have no idea why.
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Object compile: 'foo ^ Point new'.
> pointAssociation := (Object >> #foo) literals first.
> self assert: [pointAssociation isKindOf: Association].
> self assert: [pointAssociation value == Point].
> pointAssociation value: Color.    "<-- this is the dangerous line"
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> If I try to do "Object new foo", the whole image freezes.
>
> Any idea why?

>> The following code freeze the image, and I have no idea why.
>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>> Object compile: 'foo ^ Point new'.
>> pointAssociation := (Object >> #foo) literals first.
>> self assert: [pointAssociation isKindOf: Association].
>> self assert: [pointAssociation value == Point].
>> pointAssociation value: Color.    "<-- this is the dangerous line"
>> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>
>> If I try to do "Object new foo", the whole image freezes.
>>
>> Any idea why?
>
> Class bindings are shared among the system dictionary and all code
> that references them. This mechanism is central so that code with
> undeclared references can be compiled and automatically resolves later
> on without having to re-compile the complete system.
>
> Your code changes the binding of Point to point to Color. Obviously
> that's fatal. After executing your code, Point is an alias to Color
> and the actual Point class is garbage-collected.
>
> To make your code work you need to replace the complete literal with
>
>     Smalltalk associationAt: #Color
>
> Cheers,
> Lukas
>
> --
> Lukas Renggli
> http://www.lukas-renggli.ch
>
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