3.10 image hang

Hi:

I am using Squeak 3.10 on a Windows XP (2 GB RAM, 2 Ghz, Intel) While trying to save a project, I got a DNU and the image hung. The Debug walkthrough showed the error in "isSystemDefined" method. On further examination, I found a LowSpaceDebug.txt in my default directory. 

I had similar problems earlier both on XP and Vista. Image would freeze and the CPU usage would show 100%. That problem continues in my new machine which has Ubuntu.

I suspect that the image is entering an infinite loop. There is little or no documentation of this problem. I have been working on a 3.8 and 3.9 images for some time now.

I checked mantis and came across a fix for the TransformationMorph behavious which would solve the freeze problem but I don't see how it is relevant to what I am facing. I may be missing something obvious.

Can someone please help me.

Regards,

Hello Claus:

Some context and update:

The error is occurring when I try to save home project of image 3.10.2-7179 (Damien Cassou's web based image).

I have tried with VM versions 3.10.6 (2007) and 3.11.5 (Sep 2009).

I do not face this problem in the basic image from squeak.org.

Here's the walkback:

Subject: [BUG]Trait(Object)>>doesNotUnderstand: #isSystemDefined

26 September 2009 7:48:15 pm

VM: Win32 - a SmalltalkImage
Image: Squeak3.10.2 [latest update: #7179]

SecurityManager state:
Restricted: false
FileAccess: true
SocketAccess: true
Working Dir C:\Squeak\MySqueak
Trusted Dir C:\Squeak\MySqueak\Prashanth
Untrusted Dir C:\My Squeak\Prashanth

Trait(Object)>>doesNotUnderstand: #isSystemDefined
Receiver: TWriteStreamTest
Arguments and temporary variables:
aMessage: isSystemDefined
Receiver's instance variables:
methodDict: a MethodDictionary(#classUnderTest->a CompiledMethod (1905) #emptyS...etc...
traitComposition: TPuttableStreamTest + TSequencedStreamTest
localSelectors: an IdentitySet()
users: an IdentitySet()
organization: ('accessing' classUnderTest)
('accessing - defaults' emptyStream ...etc...
name: #TWriteStreamTest
environment: a SystemDictionary(lots of globals)
classTrait: TWriteStreamTest classTrait
category: #'CollectionsTests-Streams'

ClassOrganizer(BasicClassOrganizer)>>objectForDataStream:
Receiver: ('accessing' classUnderTest)
('accessing - defaults' emptyStream streamOnArray streamOnStr...etc...
Arguments and temporary variables:
refStrm: a ReferenceStream a DummyStream a DummyStream a DummyStream a DummyStr...etc...
dp: nil
Receiver's instance variables:
categoryArray: #(#accessing #'accessing - defaults' #helpers #'tests - accessin...etc...
categoryStops: #(1 4 5 10 16)
elementArray: #(#classUnderTest #emptyStream #streamOnArray #streamOnString #st...etc...
subject: TWriteStreamTest
classComment: nil
commentStamp: nil

ReferenceStream(DataStream)>>nextPut:
Receiver: a ReferenceStream a DummyStream a DummyStream a DummyStream a DummyStream a DummyStream a ...etc...
Arguments and temporary variables:
anObject: ('accessing' classUnderTest)
('accessing - defaults' emptyStream stre...etc...
typeID: 9
selector: nil
objectToStore: nil
Receiver's instance variables:
byteStream: a DummyStream a DummyStream a DummyStream a DummyStream a DummyStre...etc...
topCall: an Array(a Project(test5) a PasteUpMorph<world>(1622) [world] a Transc...etc...
basePos: 47
references: an IdentityDictionary(size 43365)
objects: an IdentityDictionary()
currentReference: nil
fwdRefEnds: an IdentityDictionary()
blockers: an IdentityDictionary(#(#(24 24) #(48 48) #(72 72) #(96 96) #(120 120...etc...
skipping: an IdentitySet()
insideASegment: true

Trait(Object)>>storeDataOn:
Receiver: TWriteStreamTest
Arguments and temporary variables:
aDataStream: a ReferenceStream a DummyStream a DummyStream a DummyStream a Dumm...etc...
cntInstVars: 9
cntIndexedVars: 0
i: 5
Receiver's instance variables:
methodDict: a MethodDictionary(#classUnderTest->a CompiledMethod (1905) #emptyS...etc...
traitComposition: TPuttableStreamTest + TSequencedStreamTest
localSelectors: an IdentitySet()
users: an IdentitySet()
organization: ('accessing' classUnderTest)
('accessing - defaults' emptyStream ...etc...
name: #TWriteStreamTest
environment: a SystemDictionary(lots of globals)
classTrait: TWriteStreamTest classTrait
category: #'CollectionsTests-Streams'


--- The full stack ---
Trait(Object)>>doesNotUnderstand: #isSystemDefined
ClassOrganizer(BasicClassOrganizer)>>objectForDataStream:
ReferenceStream(DataStream)>>nextPut:
Trait(Object)>>storeDataOn:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
ReferenceStream(DataStream)>>writeInstance:
ReferenceStream(DataStream)>>nextPut:
[] in ReferenceStream(DataStream)>>nextPutAll: {[:each | self nextPut: each]}
Array(SequenceableCollection)>>do:
ReferenceStream(DataStream)>>nextPutAll:
ReferenceStream(DataStream)>>writeArray:
ReferenceStream(DataStream)>>nextPut:
IdentitySet(Object)>>storeDataOn:
ReferenceStream(DataStream)>>writeInstance:
ReferenceStream(DataStream)>>nextPut:
Trait(Object)>>storeDataOn:
ReferenceStream(DataStream)>>writeInstance:
ReferenceStream(DataStream)>>nextPut:
[] in ReferenceStream(DataStream)>>nextPutAll: {[:each | self nextPut: each]}
Array(SequenceableCollection)>>do:
ReferenceStream(DataStream)>>nextPutAll:
ReferenceStream(DataStream)>>writeArray:
ReferenceStream(DataStream)>>nextPut:
OrderedCollection(Object)>>storeDataOn:
ReferenceStream(DataStream)>>writeInstance:
...etc...

Hello Jerome: