[Vm-dev] MessageTally broken in Cog

[Rob Withers]

Eliot,

I noticed that MessageTally was broken in Cog (which may or may not have 
anything to do with Coc).  It broke in MessageTally>>#spyEvery:on: inside 
the following code:

	"Collect gc statistics"
	SmalltalkImage current getVMParameters keysAndValuesDo: [ :idx :gcVal |
		gcStats at: idx put: (gcVal - (gcStats at: idx))].

gcVal was nil for index 4.  I looked at all the VMParameters and there are 
several nil values.  Is this a Cog thing?  Should all VMParameters be 
non-nil?  Should MessageTally change to protect against nil values?

Thanks,
Rob

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