[Vm-dev] Pharo VM bug 11130

[Stephan Eggermont]

I’ve been triangulating a long-standing bug in the Pharo VM, which 
seems to have been fixed in Squeak.

1 to: 1000 do: [ :i |
        | string |
        Transcript show: 'Iteration '; show: i; cr.
        1 timesRepeat: [ 
            (string := String new: 1000 withAll: $a)
                reversed.
        ].
    ].

reliably managed to trigger the bug. It manifested itself 
in a number of different ways. Early VMs just crashed, 
later Squeak ones work, Pharo ones show different results.

http://www.mirandabanda.org/files/Cog/VM/
2636 from 16 dec 2012 and earlier crash
2640 from 20 dec 2012 and later work.

Does anyone remember what changed in that period?

Stephan Eggermont

https://pharo.fogbugz.com/default.asp?11130