On 08.06.2015, at 15:45, matthias.springer <me at matthiasspringer.de> wrote:

> Hi there,
> 
> I am trying to understand what the meaning and implementation of
> "thisContext" is.
> 
> On a recent COG VM, "[ |a b| a:=b:=1. thisContext basicSize ] value" returns
> 3. Adding more temp vars increases that value.
> 
> On a Cocoa VM (http://squeakvm.org/mac/release/Squeak%205.7.4.1.zip), the
> same code always returns 0. Also, "thisContext at: 1" etc. is out of bounds.

(This is a vanilla (ie non-StackVM) interpreter VM)

> 
> Which one is correct? Any ideas?
> 
> The reason why I am asking is because there is code that seems to rely on
> this (e.g. SystemTracer2>>writeContext:) and I am trying to get it running
> on RSqueak.
> 
> Thanks,
> Matthias
> 
> 
> 
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>