I forwarded the mail to marcus since he does not read the list.
He is on vacation for a week so will certainly answer it later.

Stef

Begin forwarded message:

> From: Andreas Raab <andreas.raab at gmx.de>
> Date: 31 août 2007 05:22:52 HAEC
> To: The general-purpose Squeak developers list <squeak- 
> dev at lists.squeakfoundation.org>
> Subject: Heap>>first broken?
> Reply-To: The general-purpose Squeak developers list <squeak- 
> dev at lists.squeakfoundation.org>
>
> Hi -
>
> Just stumbled over this:
>
> 	self should:[Heap new first] raise: Error.
>
> Right? However, in Squeak 3.9 and later it doesn't. From the 3.9  
> change log it appears it got introduced here:
>
> 	------
> 	Change Set:		decompileBlock-md
> 	Date:			24 November 2005
> 	Author:			Marcus Denker
> 	A simplification for BlockContext>>decompileBlock:
> 	The Method got the tempNames by compiling the source of the  
> method. This
> 	is already implemented in methodNode tempNames... thus not needed  
> here.
> 	------
> 	remove emptycheck for Heap>>fist and SequencableCollection
> 	#first, #last, #middle
> 	------
>
> but no comment as to why. Any insights into the reasons for this  
> change anyone?
>
> Cheers,
>   - Andreas
>
>