Hi Göran--
...do we care about changing the ORDER of say instvars?
I think we should, if we are to support direct installation of compiled methods (without recompiling from source code), since methods use instructions that refer to the receiver's instance variables explicitly by field index.
-C
-- Craig Latta improvisational musical informaticist www.netjam.org Smalltalkers do: [:it | All with: Class, (And love: it)]