Hi,
Apologies for maybe cross-posting - been having trouble with getting my pharo mailing lists straight. I'm throwing this out there in case it turns out to 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 distribution classes 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 any attempt to instantiate a ProbabilityDistribution or its subclasses, 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.
If you want to replicate, just create a subclass Foo of Stream and send it the message #basicNew.
Thanks.
Larry
Locked
