Hi Ben,

i don't know exactly what is happening here, but (size vs. inpsect)

testObject := 'TEST'.
ref1 := { testObject. nil }.
ref2 := { ref1 }.
ref3 := { ref2 }.��
ref1 at: 2 put: ref3. ��"note the reference loop this creates"
testObject pointersTo size
-> 5



works. So, the problem is not in #pointersTo but inspecting the result array has one or more recursive self calls
to its elements.




2015-01-30 3:59 GMT+01:00 Ben Coman <btc@openinworld.com>:

I am revisiting my PointerDetective tool, which relies heavily on ProtoObject>>pointersTo.

The example I recorded at the repository home page is currently locking & crashing the image due to #pointersTo being unable to handle the circular reference.�� This "must" have been working on Windows at least around August 2014, but I've been unable to reproduce a working case since my Windows laptop died and I've since moved to OSX.

On OSX, in a fresh image 40467 and latest vm 402, the following crashes the image...

testObject := 'TEST'.
ref1 := { testObject. nil }.
ref2 := { ref1 }.
ref3 := { ref2 }.��
ref1 at: 2 put: ref3. ��"note the reference loop this creates"
testObject pointersTo inspect.

OSX Memory Monitor shows memory usage shoot from 50MB to >500MB in a few seconds, then usually the image crashes, but sometimes just hangs.

I've logged...��

cheers -ben