[Vm-dev] New Cog VMs available

Eliot Miranda eliot.miranda at gmail.com
Wed Jul 9 21:01:57 UTC 2014

... at http://www.mirandabanda.org/files/Cog/VM/VM.r3034/.

The Squeak Spur VMs will now run Pharo images that have been bootstrapped
(SpurBootstrap bootstrapPharoImage: 'myimage'), but be aware that the
bootstrap does not yet update the modified packages in a Pharo 4 image, and
hence sources for the modified methods is unavailable.

CogVM binaries as per VMMaker.oscog-eem.812/r3039

Fix bug in old space GC processing of weaklings.  Old code didn't trace
references in weaklings to weaklings in
Make sure nilUnmarkedWeaklingSlotsIn: can be inlined.  Bug shows up as
in Pharo Spur, Pharo making much more use of weakness than Squeak or

Fix bug in nilUnmarkedWeaklingSlotsIn: which was not guarding the
isForwarded: check with an isFreeObject: not check.

Move the scanning for young references in scavenger processing of weaklings
into processWeakSurvivor:.

Fix minor slips in allObjects & allInstancesOf: which should only empty
weaklingStack if marking.

Fix a couple of storePointer:ofObject:'s being applied to objStacks.

Rename isReallyForwarded: to isUnambiguouslyForwarder: and add an assert to
isForwarded: to catch accidental applications to free objects.

Fix longPrintOop: for free referents.

V3 Cogit: Fix bogus assert fail due to signedness.

Assign complex expressions to loop variables in value: expansions.  Old code
would replace variable with expansion of actual parameter everywhere.
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