[OpenSmalltalk/opensmalltalk-vm] CoverageWrapper VM crash Squeak (#267)

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[OpenSmalltalk/opensmalltalk-vm] CoverageWrapper VM crash Squeak (#267)

Eliot Miranda-3
 

By enabling coverage reporting in SmalltalkCI (with a new VMVersion) the VM crashes when calling some specific methods on the coverage wrapper, I think.
To reproduce you can checkout the acceptit projects repository here: https://github.com/hpi-swa-teaching/AcceptIt

Here's the error message the crash resulted in:


Segmentation fault Tue Jun 12 17:53:59 2018
 

../sqcogspurlinuxht/lib/squeak/5.0-201804030952/squeak
Squeak VM version: 5.0-201804030952  Tue Apr  3 17:18:11 UTC 2018 gcc 4.8 [Production Spur VM]
Built from: CoInterpreter VMMaker.oscog-eem.2361 uuid: 7ca2f89a-de70-422f-b92b-54f91ac4e47b Apr  3 2018
With: StackToRegisterMappingCogit VMMaker.oscog-eem.2361 uuid: 7ca2f89a-de70-422f-b92b-54f91ac4e47b Apr  3 2018
Revision: VM: 201804030952 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $
Date: Tue Apr 3 11:52:19 2018 +0200 $ CommitHash: 29f50cf $
Plugins: 201804030952 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $
Build host: Linux travis-job-930f7414-a090-41ce-93a1-0feed6bb9e53 4.4.0-101-generic #124~14.04.1-Ubuntu SMP Fri Nov 10 19:05:36 UTC 2017 i686 i686 i686 GNU/Linux
plugin path: ..sqcogspurlinuxht/bin/../lib/squeak/5.0-201804030952 [default: ../sqcogspurlinuxht/lib/squeak/5.0-201804030952/]


C stack backtrace & registers:
	eax 0xfff009e4 ebx 0xfff00900 ecx 0xfff00998 edx 0xfff0094c
	edi 0xfff007d0 esi 0xfff007d0 ebp 0xfff00868 esp 0xfff008b4
	eip 0xfff00ac8
*[0xfff00ac8]
/../lib/squeak/5.0-201804030952/squeak[0x805ef8a]
/../lib/squeak/5.0-201804030952/squeak[0x8060ada]
[0xf774cbd0]
/../lib/squeak/5.0-201804030952/squeak(interpret+0x2eb)[0x809a1cb]
/../lib/squeak/5.0-201804030952/squeak[0x80a39ee]
/../lib/squeak/5.0-201804030952/squeak(interpret+0x1e3)[0x809a0c3]
/../lib/squeak/5.0-201804030952/squeak(main+0x2f7)[0x805e467]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf7)[0xf7534637]
/../lib/squeak/5.0-201804030952/squeak[0x805e7bf]
[0xffffffff]


Smalltalk stack dump:
0xfff06a68 I Message>(nil) 0x9046f58: a(n) Message
0xfff06a84 M [] in ACCalculatorUserStory class(ACUserStory class)>scenarioAndMethodDict 0xad3dbb8: a(n) ACCalculatorUserStory class
0xfff06aac M [] in MethodDictionary(Collection)>inject:into: 0xb618738: a(n) MethodDictionary
0xfff06ad4 M MethodDictionary>valuesDo: 0xb618738: a(n) MethodDictionary
0xfff06af0 M MethodDictionary(Dictionary)>do: 0xb618738: a(n) MethodDictionary
0xfff06b10 M MethodDictionary(Collection)>inject:into: 0xb618738: a(n) MethodDictionary
0xfff06b30 M ACCalculatorUserStory class(ACUserStory class)>scenarioAndMethodDict 0xad3dbb8: a(n) ACCalculatorUserStory class
0xfff06b48 M ACCalculatorUserStory class(ACUserStory class)>compiledMethodAt: 0xad3dbb8: a(n) ACCalculatorUserStory class
0xfff06b64 M SCICoverageWrapper>run:with:in: 0xad17488: a(n) SCICoverageWrapper
0xfff06b8c M ACTestRunner>stepList 0xb618b20: a(n) ACTestRunner
0xfff06ba4 M ACPluggableListMorphPlus(PluggableListMorph)>getFullList 0xb61e088: a(n) ACPluggableListMorphPlus
0xfff06bbc M ACPluggableListMorphPlus(PluggableListMorph)>getList 0xb61e088: a(n) ACPluggableListMorphPlus
0xfff06bd4 M ACPluggableListMorphPlus(PluggableListMorph)>getListSize 0xb61e088: a(n) ACPluggableListMorphPlus
0xfff06bec M LazyListMorph>getListSize 0xb64f168: a(n) LazyListMorph
0xfff06c08 M LazyListMorph>listChanged 0xb64f168: a(n) LazyListMorph
0xfff06c24 M ACPluggableListMorphPlus(PluggableListMorph)>updateList 0xb61e088: a(n) ACPluggableListMorphPlus
0xfff06c44 M ACPluggableListMorphPlus(PluggableListMorph)>update: 0xb61e088: a(n) ACPluggableListMorphPlus
0xfff06c64 M [] in ACTestRunner(Object)>changed: 0xb618b20: a(n) ACTestRunner
0xfff06c8c M DependentsArray>do: 0xb618e48: a(n) DependentsArray
0xfff01a4c M ACTestRunner(Object)>changed: 0xb618b20: a(n) ACTestRunner
0xfff01a70 I ACTestRunner>updateSteps 0xb618b20: a(n) ACTestRunner
0xfff01a88 M ACTestRunner>scenarioAt:put: 0xb618b20: a(n) ACTestRunner
0xfff01aa8 M SCICoverageWrapper>run:with:in: 0xad16f78: a(n) SCICoverageWrapper
0xfff01acc M ACTestRunner(Object)>perform:with:with: 0xb618b20: a(n) ACTestRunner
0xfff01af0 M PluggableListMorphOfMany>listSelectionAt:put: 0xb61e1f0: a(n) PluggableListMorphOfMany
0xfff01b28 I PluggableListMorphOfMany>mouseDown: 0xb61e1f0: a(n) PluggableListMorphOfMany
0xfff01b4c I PluggableListMorphOfMany(Morph)>handleMouseDown: 0xb61e1f0: a(n) PluggableListMorphOfMany
0xfff01b68 M MouseButtonEvent>sentTo: 0x9033038: a(n) MouseButtonEvent
0xfff01b84 M PluggableListMorphOfMany(Morph)>handleEvent: 0xb61e1f0: a(n) PluggableListMorphOfMany
0xfff01bac M [] in MTFMorphWrapper>sendMouseEvent:button:modifiers: 0x9032d88: a(n) MTFMorphWrapper
0xfff01bd0 M Array(SequenceableCollection)>do: 0x9032d78: a(n) Array
0xfff01bec M MTFMorphWrapper>sendMouseEvent:button:modifiers: 0x9032d88: a(n) MTFMorphWrapper
0xfff01c18 I MTFMorphWrapper>mouseDownForButton:with: 0x9032d88: a(n) MTFMorphWrapper
0xfff01c40 I MTFMorphWrapper>leftMouseDown: 0x9032d88: a(n) MTFMorphWrapper
0xfff01c64 M [] in MTFMorphWrapper>leftClickWith: 0x9032a70: a(n) MTFMorphWrapper
0xfff01c8c M Set>do: 0x8e9d5c0: a(n) Set
0xfff0c8c0 M MTFMorphWrapper>leftClickWith: 0x9032a70: a(n) MTFMorphWrapper
0xfff0c8dc M MTFMorphWrapper>leftClick 0x9032a70: a(n) MTFMorphWrapper
0xfff0c8fc I MTFMorphWrapper>click 0x9032a70: a(n) MTFMorphWrapper
0xfff0c91c I ACTestRunnerTest>selectCorrectScenario 0xad23ef0: a(n) ACTestRunnerTest
0xfff0c938 M ACTestRunnerTest>testDisplaysScenario 0xad23ef0: a(n) ACTestRunnerTest
0xfff0c958 I ACTestRunnerTest(TestCase)>performTest 0xad23ef0: a(n) ACTestRunnerTest
0xfff0c970 M [] in ACTestRunnerTest(TestCase)>runCase 0xad23ef0: a(n) ACTestRunnerTest
0xfff0c98c M BlockClosure>on:do: 0xb680420: a(n) BlockClosure
0xfff0c9b4 M [] in ACTestRunnerTest(TestCase)>timeout:after: 0xad23ef0: a(n) ACTestRunnerTest
0xfff0c9d4 M BlockClosure>ensure: 0xb680530: a(n) BlockClosure
0xfff0c9fc M ACTestRunnerTest(TestCase)>timeout:after: 0xad23ef0: a(n) ACTestRunnerTest
0xfff0ca1c M [] in ACTestRunnerTest(TestCase)>runCase 0xad23ef0: a(n) ACTestRunnerTest
0xfff0ca3c M BlockClosure>ensure: 0xb680630: a(n) BlockClosure
0xfff0ca58 M ACTestRunnerTest(TestCase)>runCase 0xad23ef0: a(n) ACTestRunnerTest
0xfff0ca70 M SCISqueakTestRunner(SCITestRunner)>basicRunCase: 0xad217f0: a(n) SCISqueakTestRunner
0xfff0ca90 M [] in SCISqueakTestRunner(SCITestRunner)>runCase: 0xad217f0: a(n) SCISqueakTestRunner
0xfff0caac M BlockClosure>on:do: 0xb6806c0: a(n) BlockClosure
0xfff0cad4 M [] in SCISqueakTestRunner(SCITestRunner)>runCase: 0xad217f0: a(n) SCISqueakTestRunner
0xfff0caf0 M BlockClosure>on:do: 0xb6807e8: a(n) BlockClosure
0xfff0cb18 M [] in SCISqueakTestRunner(SCITestRunner)>runCase: 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cb34 M Time class>millisecondsToRun: 0x9610b68: a(n) Time class
0xfff0cb50 M SmalltalkCI class>timeToRun: 0xab38d38: a(n) SmalltalkCI class
0xfff0cb74 M SCISqueakTestRunner(SCITestRunner)>runCase: 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cb90 M ACTestRunnerTest(TestCase)>run: 0xad23ef0: a(n) ACTestRunnerTest
0xfff0cbac M [] in SCISqueakTestRunner(SCITestRunner)>runAll 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cbcc M OrderedCollection>do: 0xad21b90: a(n) OrderedCollection
0xfff0cbf0 I SCISqueakTestRunner(SCITestRunner)>runAll 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cc08 M [] in SCISqueakTestRunner(SCITestRunner)>run 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cc2c I Time class>millisecondsToRun: 0x9610b68: a(n) Time class
0xfff0cc50 I SmalltalkCI class>timeToRun: 0xab38d38: a(n) SmalltalkCI class
0xfff0cc6c M [] in SCISqueakTestRunner(SCITestRunner)>run 0xad217f0: a(n) SCISqueakTestRunner
0xfff0cc8c M BlockClosure>ensure: 0xad21c80: a(n) BlockClosure
 0xad21808 s SCISqueakTestRunner(SCITestRunner)>run
 0xad3e280 s SCISqueakTestRunner class(SCITestRunner class)>runSuite:spec:
 0xad218c8 s SCISqueakTestRunner class(SCITestRunner class)>runClasses:spec:
 0xad3e220 s SCISqueakTestRunner class(SCITestRunner class)>runSpec:
 0xb619070 s SmalltalkCISqueak(SmalltalkCI)>runTests
 0xb61ec00 s [] in SmalltalkCISqueak(SmalltalkCI)>basicTest
 0xb6503d0 s [] in SCISqueakCodeCoverage(SCICodeCoverage)>run:
 0xb65b340 s BlockClosure>ensure:
 0xad219a8 s SCISqueakCodeCoverage(SCICodeCoverage)>run:
 0xad3e1c0 s SCISqueakCodeCoverage class(SCICodeCoverage class)>run:spec:in:
 0xad21a08 s [] in SmalltalkCISqueak(SmalltalkCI)>basicTest
 0xad3e160 s [] in SmalltalkCISqueak class(SmalltalkCI class)>fold:on:block:
 0xb619010 s Time class>millisecondsToRun:
 0xb61eba0 s SmalltalkCI class>timeToRun:
 0xad21a80 s SmalltalkCISqueak class(SmalltalkCI class)>fold:on:block:
 0xad21ae0 s SmalltalkCISqueak class(SmalltalkCI class)>fold:block:
 0xad20f70 s SmalltalkCISqueak class(SmalltalkCI class)>stage:id:block:
 0xad21010 s SmalltalkCISqueak(SmalltalkCI)>basicTest
 0xad3e460 s [] in SmalltalkCISqueak(SmalltalkCI)>test
 0xb4d1150 s BlockClosure>on:do:
 0xad210b0 s [] in SmalltalkCISqueak(SmalltalkCI)>test
 0xad3e400 s [] in SmalltalkCISqueak class(SmalltalkCI class)>withBuildStatusReportingDo:
 0xb4d11b0 s BlockClosure>on:do:
 0xad21158 s SmalltalkCISqueak class(SmalltalkCI class)>withBuildStatusReportingDo:
 0xad211b8 s SmalltalkCISqueak(SmalltalkCI)>test
 0xad3e3a0 s SmalltalkCI class>test:projectDirectory:
 0xb619130 s SmalltalkCI class>test:
 0xad21260 s UndefinedObject>DoIt
 0xad213a0 s Compiler>evaluateCue:ifFail:
 0xad21438 s Compiler>evaluateCue:ifFail:logged:
 0xad3e340 s Compiler>evaluate:in:to:notifying:ifFail:logged:
 0xad21670 s Compiler class>evaluate:for:notifying:logged:
 0xad3e2e0 s Compiler class>evaluate:for:logged:
 0xb6190d0 s Compiler class>evaluate:logged:
 0xb61ec60 s [] in ReadStream(PositionableStream)>fileInAnnouncing:
 0xb4d1210 s BlockClosure>on:do:
 0xad21700 s [] in ReadStream(PositionableStream)>fileInAnnouncing:
 0xad205f8 s [] in MorphicUIManager>displayProgress:at:from:to:during:
 0xb4d1090 s BlockClosure>on:do:
 0xad20690 s [] in MorphicUIManager>displayProgress:at:from:to:during:
 0xad3e640 s BlockClosure>ensure:
 0xad20728 s MorphicUIManager>displayProgress:at:from:to:during:
 0xad3e5e0 s ProgressInitiationException>defaultResumeValue
 0xb6192b0 s ProgressInitiationException(Exception)>resume
 0xb61ede0 s ProgressInitiationException>defaultAction
 0xb6504f0 s UndefinedObject>handleSignal:
 0xad207d8 s ProgressInitiationException(Exception)>signal
 0xad20838 s ProgressInitiationException>display:at:from:to:during:
 0xad3e580 s ProgressInitiationException class>display:at:from:to:during:
 0xb619250 s ByteString(String)>displayProgressAt:from:to:during:
 0xb61ed80 s ByteString(String)>displayProgressFrom:to:during:
 0xad208c0 s ReadStream(PositionableStream)>fileInAnnouncing:
 0xad3e520 s ReadStream(PositionableStream)>fileIn
 0xb6191f0 s CodeLoader>installSourceFile:
 0xb61ed20 s [] in CodeLoader>installSourceFiles
 0xb650490 s Array(SequenceableCollection)>do:
 0xad20b80 s CodeLoader>installSourceFiles
 0xad20ce8 s ProjectLauncher>startUpAfterLogin
 0xad3e4c0 s ProjectLauncher>startUp
 0xb619190 s [] in AutoStart class>startUp:
 0xb61ecc0 s WorldState>runStepMethodsIn:
 0xb650430 s PasteUpMorph>runStepMethods
 0xacfbb50 s WorldState>doOneCycleNowFor:
 0xacfbbb0 s WorldState>doOneCycleFor:
 0xacfbc10 s PasteUpMorph>doOneCycle
 0x99caec8 s [] in MorphicProject>spawnNewProcess
 0x95e1050 s [] in BlockClosure>newProcess

The bug is also present in earlier VMVersions. Like in this build on travis:
https://travis-ci.org/hpi-swa-teaching/AcceptIt/builds/389123915

This is how the log looks in those cases sometimes:

Segmentation fault Tue Jun 12 17:32:55 2018
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak
Squeak VM version: 5.0-3427  Fri Aug 21 22:07:53 PDT 2015 gcc 4.4.7 [Production Spur ITHB VM]
Built from: CoInterpreter VMMaker.oscog-eem.1441 uuid: c41d605b-7d2e-4ecc-95e1-b295119106a7 Aug 21 2015
With: StackToRegisterMappingCogit VMMaker.oscog-eem.1436 uuid: 9d2442c4-2066-4ffd-a215-e7e2b6cb8eed Aug 21 2015
Revision: VM: r3427 http://www.squeakvm.org/svn/squeak/branches/Cog Date: 2015-08-21 20:39:38 -0700
Plugins: r3415 http://squeakvm.org/svn/squeak/trunk/platforms/Cross/plugins
Build host: Linux mclinux32 2.6.32-431.el6.i686 #1 SMP Fri Nov 22 00:26:36 UTC 2013 i686 i686 i386 GNU/Linux
plugin path: /home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427 [default: /home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/]
C stack backtrace & registers:
	eax 0xffe105e4 ebx 0xffe10500 ecx 0xffe10598 edx 0xffe1054c
	edi 0xffe103d0 esi 0xffe103d0 ebp 0xffe10468 esp 0xffe104b4
	eip 0xffe106c8
*[0xffe106c8]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak[0x805f200]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak[0x805f4ff]
[0xf7f8dde0]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak[0x806d580]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak[0x8099817]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak(ceStackOverflow+0x6d)[0x809cc5d]
[0x890028e]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak(interpret+0x86e)[0x809d50e]
/home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/lib/squeak/5.0-3427/squeak(main+0x2b4)[0x805fc54]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xf7d66af3]
/lib/i386-linux-gnu/libc.so.6(+0x1ad450)[0xf7efa450]
Smalltalk stack dump:
0xffe7a3c4 M INVALID RECEIVER>(nil)  0x93d0a68: a(n) 
0xffe7a3e4 M [] in INVALID RECEIVER>(nil)  0x8a0ffd0: a(n) 
0xffe7a404 M INVALID RECEIVER>(nil)  0x8a18328: a(n) 
0xffe7a420 M INVALID RECEIVER>(nil)  0x8a0ffd0: a(n) 
0xffe7a444 M INVALID RECEIVER>(nil)  0x8a0ff50: a(n) 
0xffe7a468 I INVALID RECEIVER>(nil)  0x8ce1a40: a(n) 
0xffe7a484 M [] in INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe7a4a0 M INVALID RECEIVER>(nil)  0x8a107f8: a(n) 
0xffe7a4c0 M [] in INVALID RECEIVER>(nil)  0x8a10798: a(n) 
0xffe7a4e0 M INVALID RECEIVER>(nil)  0x8ce1c00: a(n) 
0xffe7a504 M INVALID RECEIVER>(nil)  0x8a10798: a(n) 
0xffe7a520 M INVALID RECEIVER>(nil)  0x8ce1a40: a(n) 
0xffe7a548 I INVALID RECEIVER>(nil)  0x1=0
0xffe7a560 I INVALID RECEIVER>(nil) 0xaa318c8: a(n) 
0xffe7a580 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a5a4 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a5c4 M INVALID RECEIVER>(nil)  0xaa316c0: a(n) 
0xffe7a5e8 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a608 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a62c M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a65c M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a688 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a6b4 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a6d8 M INVALID RECEIVER>(nil)  0x8a0a180: a(n) 
0xffe7a700 I INVALID RECEIVER>(nil)  0xa968260: a(n) 
0xffe7a720 I INVALID RECEIVER>(nil)  0xa968260: a(n) 
0xffe7a73c M INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe7a754 M INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe7a76c M [] in INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe7a788 M INVALID RECEIVER>(nil)  0x8a0fe30: a(n) 
0xffe7a7b0 M [] in INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe1b448 M INVALID RECEIVER>(nil)  0x8a0fcd8: a(n) 
0xffe1b470 M INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe1b490 M [] in INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe1b4b0 M INVALID RECEIVER>(nil)  0x8a0fea8: a(n) 
0xffe1b4cc M INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe1b4e4 M INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b504 M [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b520 M INVALID RECEIVER>(nil)  0x8a0ff38: a(n) 
0xffe1b548 M [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b564 M INVALID RECEIVER>(nil)  0x8a10060: a(n) 
0xffe1b58c M [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b5a8 M INVALID RECEIVER>(nil)  0x93c1ab0: a(n) 
0xffe1b5c4 M INVALID RECEIVER>(nil)  0xa8de168: a(n) 
0xffe1b5e8 M INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b604 M INVALID RECEIVER>(nil)  0xaa40110: a(n) 
0xffe1b620 M [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b640 M INVALID RECEIVER>(nil)  0xaa39900: a(n) 
0xffe1b664 I INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b684 I [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b6a8 I INVALID RECEIVER>(nil)  0x93c1ab0: a(n) 
0xffe1b6cc I INVALID RECEIVER>(nil)  0xa8de168: a(n) 
0xffe1b6f0 I [] in INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b710 M INVALID RECEIVER>(nil)  0xaa399f0: a(n) 
0xffe1b734 I INVALID RECEIVER>(nil)  0xaa397f0: a(n) 
0xffe1b754 I INVALID RECEIVER>(nil)  0xa9600a8: a(n) 
0xffe1b784 I INVALID RECEIVER>(nil)  0xa9600a8: a(n) 
0xffe1b7ac I INVALID RECEIVER>(nil)  0xa9600a8: a(n) 
 0xaa39bb8 is not a context
Most recent primitives
**StackOverflow**
**StackOverflow**
stack page bytes 4096 available headroom 2788 minimum unused headroom 3016
	(Segmentation fault)
/home/travis/smalltalkCI-master/_builds/vm: line 1:  3323 Aborted                 (core dumped) /home/travis/smalltalkCI-master/_cache/vms/cogspurlinux/squeak "$@"


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