On Dec 1, 2011, at 4:48 PM, Larry White wrote:
> Hi,
>
> Throwing this out there because it may be a bug.
>
> I'm running the Seaside one-click install on OS X Lion.
> Pharo1.3
> Latest update: #13302
>
> I can reliably cause my VM to freeze up and need to Force-Quit it from the OS.
>
> I'm implementing (copying) the probability logic from the blue book. When I tried to create an instance of the Binomial class, the system hung. I can replicate the problem by sending the message #basicNew to ProbabilityDistribution. ProbabilityDistribution is a direct subclass of Stream and I haven't overridden or modified #basicNew.
>
> What's happening is that it fails in the BlockClosure [anObject doit], but only when I instantiate a member of this particular class hierarchy. In the probability classes, a #doIt in a Workspace hits the line "self suspend" in the #terminate method of Process and the VM hangs there.
>
> I believe they had ProbabilityDistribution subclass from Stream because sampling from a distribution is like reading from a Stream, but I don't think any there's any actual shared code, so I switched the superclass of ProbabilityDistribution to Object and the code works fine now.
>
> Thanks.
>
> Larry