The magic 123 is just a stub primitive assigned so that code can be run
on machines with or without proper unwind support. Check out
valueUninterruptably to see how nasty this stuff is (and it doesn't work
anyways ;-)

At some point (e.g., at the point where we _know_ that all VMs have
proper unwind support) we can just get rid of this entire method and
replace it by #value.

Cheers,
  - Andreas

> -----Original Message-----
> From: squeak-dev-admin at lists.squeakfoundation.org 
> [mailto:squeak-dev-admin at lists.squeakfoundation.org] On 
> Behalf Of Scott A Crosby
> Sent: Wednesday, February 13, 2002 12:57 PM
> To: Andreas Raab
> Cc: squeak-dev at lists.squeakfoundation.org
> Subject: RE: [BUG] Can't go inside an ensure: receiver block 
> in the debugger
> 
> 
> On Wed, 13 Feb 2002, Andreas Raab wrote:
> 
> > > Any simple solution?
> >
> > Yup. Just add the following to
> > ContextPart>>doPrimitive:method:receiver:args:
> >
> > 	(primitiveIndex = 123 and: [receiver isMemberOf: BlockContext])
> > 		ifTrue: [^receiver pushArgs: arguments from: self].
> >
> 
> Where does the magic 123 come from? Shouldn't that be a 
> symbolic constant?
> 
> 
> Scott
> 
> 
> 
>