[Vm-dev] corruption of PC in context objects or not (?)

Eliot Miranda eliot.miranda at gmail.com
Wed Sep 30 14:24:40 UTC 2020



> On Sep 30, 2020, at 6:40 AM, Andrei Chis <chisvasileandrei at gmail.com> wrote:
> 
> Hi Eliot,
> 
> I can confirm that VMMaker.oscog-eem.2831 fixes the bug for us. I had 10 consecutive runs of our tests with no crash which did not happen before.

😅

> 
> Many thanks for the fix!

Thanks for the bug!  This was an important one to find and fix.

> 
> Cheers,
> Andrei
> 
>> On 28 Sep 2020, at 04:03, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>> 
>> Hi Andrei,
>> 
>> On Sun, Sep 27, 2020 at 1:01 PM Andrei Chis <chisvasileandrei at gmail.com> wrote:
>>>  
>>> Hi Eliot,
>>> 
>>> I get the following details for the VM that I compiled locally:
>>> 
>>> CoInterpreter VMMaker.oscog-eem.2824 uuid: 8f091e5b-fc0f-4b4b-ab5e-e90e598f75ee Sep 27 2020
>>> StackToRegisterMappingCogit VMMaker.oscog-eem.2824 uuid: 8f091e5b-fc0f-4b4b-ab5e-e90e598f75ee Sep 27 2020
>>> VM: 202009270258 andrei at Andreis-MacBook-Pro.local:Documents/Pharo/vm-compilation/opensmalltalk-vm Date: Sat Sep 26 19:58:41 2020 CommitHash: 5a0d21d71 Plugins: 202009270258 andrei at Andreis-MacBook-Pro.local:Documents/Pharo/vm-compilation/opensmalltalk-vm
>>> 
>>> Mac OS X built on Sep 27 2020 14:27:59 CEST Compiler: 4.2.1 Compatible Apple LLVM 11.0.3 (clang-1103.0.32.62)
>>> VMMaker versionString VM: 202009270258 andrei at Andreis-MacBook-Pro.local:Documents/Pharo/vm-compilation/opensmalltalk-vm Date: Sat Sep 26 19:58:41 2020 CommitHash: 5a0d21d71 Plugins: 202009270258 andrei at Andreis-MacBook-Pro.local:Documents/Pharo/vm-compilation/opensmalltalk-vm
>>> CoInterpreter VMMaker.oscog-eem.2824 uuid: 8f091e5b-fc0f-4b4b-ab5e-e90e598f75ee Sep 27 2020
>>> StackToRegisterMappingCogit VMMaker.oscog-eem.2824 uuid: 8f091e5b-fc0f-4b4b-ab5e-e90e598f75ee Sep 27 2020
>>> 
>>> 
>>> I can package together the image/changes file and libs and send them privately. 
>> 
>> Good, let's do that. Thanks.
>>> 
>>> Cheers,
>>> Andrei
>>> 
>>>> On 27 Sep 2020, at 21:23, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>>>> 
>>>> Hi Andrei,
>>>> 
>>>> On Sun, Sep 27, 2020 at 10:29 AM Andrei Chis <chisvasileandrei at gmail.com> wrote:
>>>>>  
>>>>> Hi Eliot,
>>>>> 
>>>>> Thanks a lot for your help.
>>>>> 
>>>>> I compiled locally a vm from the commit hash 5a0d21d71223b4d1f4d007ebf2441d530c18c3e2 (CogVM source as per VMMaker.oscog-eem.2826) and I got a Context>>copyTo: crash.
>>>>> I think I compiled the vm correctly. Are them some Pharo VMs built on travis for Mac to try out instead of building locally?
>>>> 
>>>> There may be.  The PharoVM team are not maintaining our CI builds so you may not be able to find a Pharo VM.  
>>>> 
>>>>> 
>>>>> Below are the stack traces and primitive longs for two crashes with the compiled vm.
>>>> 
>>>> OK, that's disappointing, but important.  Maybe you can put an image/changes, support dylibs package up somewhere (Dropbox?) and I can try and run the test case locally. I tested the fix for some time and it clearly fixed one bug.  But it does seem that there's another in a similar area.  Thanks for your patience.
>>>> 
>>>> One question, you're sure you're running the new VM?
>>>> 
>>>>> 
>>>>> Process 19347 stopped
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=EXC_I386_BPT, subcode=0x0)
>>>>>     frame #0: 0x0000000140103f79
>>>>> ->  0x140103f79: int3   
>>>>>     0x140103f7a: int3   
>>>>>     0x140103f7b: int3   
>>>>>     0x140103f7c: int3   
>>>>> Target 0: (Pharo) stopped.
>>>>> 
>>>>> (lldb) call dumpPrimTraceLog()
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> basicNew
>>>>> @
>>>>> @
>>>>> @
>>>>> @
>>>>> basicNew
>>>>> basicNew
>>>>> @
>>>>> @
>>>>> @
>>>>> @
>>>>> @
>>>>> @
>>>>> signal
>>>>> signal
>>>>> class
>>>>> basicIdentityHash
>>>>> basicNew
>>>>> class
>>>>> bitShift:
>>>>> bitAnd:
>>>>> asFloat
>>>>> /
>>>>> asFloat
>>>>> fractionPart
>>>>> truncated
>>>>> fractionPart
>>>>> truncated
>>>>> fractionPart
>>>>> truncated
>>>>> setAlpha:
>>>>> truncated
>>>>> basicIdentityHash
>>>>> basicNew
>>>>> basicNew
>>>>> class
>>>>> class
>>>>> basicNew
>>>>> basicNew
>>>>> basicIdentityHash
>>>>> basicNew
>>>>> basicNew
>>>>> basicNew
>>>>> wait
>>>>> class
>>>>> tempAt:
>>>>> tempAt:put:
>>>>> tempAt:
>>>>> terminateTo:
>>>>> signal
>>>>> findNextUnwindContextUpTo:
>>>>> terminateTo:
>>>>> wait
>>>>> **StackOverflow**
>>>>> signal
>>>>> replaceFrom:to:with:startingAt:
>>>>> wait
>>>>> **StackOverflow**
>>>>> class
>>>>> signal
>>>>> basicNew
>>>>> class
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> wait
>>>>> signal
>>>>> basicIdentityHash
>>>>> class
>>>>> basicNew
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> class
>>>>> class
>>>>> **StackOverflow**
>>>>> wait
>>>>> signal
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> wait
>>>>> signal
>>>>> basicNew
>>>>> basicNew
>>>>> basicNew
>>>>> signal
>>>>> wait
>>>>> signal
>>>>> basicIdentityHash
>>>>> basicIdentityHash
>>>>> basicNew
>>>>> basicNew
>>>>> class
>>>>> value:value:
>>>>> basicNew
>>>>> replaceFrom:to:with:startingAt:
>>>>> valueWithArguments:
>>>>> **StackOverflow**
>>>>> basicIdentityHash
>>>>> valueWithArguments:
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> class
>>>>> findNextHandlerOrSignalingContext
>>>>> **StackOverflow**
>>>>> primitive
>>>>> ~=
>>>>> ~=
>>>>> tempAt:
>>>>> **StackOverflow**
>>>>> tempAt:
>>>>> basicNew
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> 
>>>>> 
>>>>> 
>>>>> (lldb) call printCallStack()
>>>>>     0x7ffeefbe6d78 M Context(Object)>copy 0x145bbce28: a(n) Context
>>>>>     0x7ffeefbe6db0 M Context>copyTo: 0x145bbce28: a(n) Context
>>>>>     0x7ffeefbe6df8 M Context>copyTo: 0x145bbcd30: a(n) Context
>>>>>     0x7ffeefbe6e40 M Context>copyTo: 0x145bbcc78: a(n) Context
>>>>>     0x7ffeefbe6e88 M Context>copyTo: 0x145bbcbc0: a(n) Context
>>>>>     0x7ffeefbe6ed0 M Context>copyTo: 0x19709adc8: a(n) Context
>>>>>     0x7ffeefbe6f18 M Context>copyTo: 0x19709ad10: a(n) Context
>>>>>     0x7ffeefbe37c8 M Context>copyTo: 0x19709ac58: a(n) Context
>>>>>     0x7ffeefbe3810 M Context>copyTo: 0x19709aba0: a(n) Context
>>>>>     0x7ffeefbe3858 M Context>copyTo: 0x19709aae8: a(n) Context
>>>>>     0x7ffeefbe38a0 M Context>copyTo: 0x19709aa10: a(n) Context
>>>>>     0x7ffeefbe38e8 M Context>copyTo: 0x19709a938: a(n) Context
>>>>>     0x7ffeefbe3930 M Context>copyTo: 0x19709a860: a(n) Context
>>>>>     0x7ffeefbe3978 M Context>copyTo: 0x19709a7a8: a(n) Context
>>>>>     0x7ffeefbe39c0 M Context>copyTo: 0x19709a6f0: a(n) Context
>>>>>     0x7ffeefbe3a08 M Context>copyTo: 0x19709a638: a(n) Context
>>>>>     0x7ffeefbe3a50 M Context>copyTo: 0x19709a560: a(n) Context
>>>>>     0x7ffeefbe3a98 M Context>copyTo: 0x19709a4a8: a(n) Context
>>>>>     0x7ffeefbe3ae0 M Context>copyTo: 0x19709a3f0: a(n) Context
>>>>>     0x7ffeefbe3b28 M Context>copyTo: 0x19709a338: a(n) Context
>>>>>     0x7ffeefbe3b70 M Context>copyTo: 0x19709a280: a(n) Context
>>>>>     0x7ffeefbe3bb8 M Context>copyTo: 0x19709a1c8: a(n) Context
>>>>>     0x7ffeefbe3c00 M Context>copyTo: 0x19709a0e0: a(n) Context
>>>>>     0x7ffeefbe3c48 M Context>copyTo: 0x197099ff8: a(n) Context
>>>>>     0x7ffeefbe3c90 M Context>copyTo: 0x197099ee0: a(n) Context
>>>>>     0x7ffeefbe3cd8 M Context>copyTo: 0x197099e28: a(n) Context
>>>>>     0x7ffeefbe3d20 M Context>copyTo: 0x140169920: a(n) Context
>>>>>     0x7ffeefbe3d68 M Context>copyTo: 0x140169868: a(n) Context
>>>>>     0x7ffeefbe3db0 M Context>copyTo: 0x1401697b0: a(n) Context
>>>>>     0x7ffeefbe3df8 M Context>copyTo: 0x1401696f8: a(n) Context
>>>>>     0x7ffeefbe3e40 M Context>copyTo: 0x140169640: a(n) Context
>>>>>     0x7ffeefbe3e88 M Context>copyTo: 0x140169588: a(n) Context
>>>>>     0x7ffeefbe3ed0 M Context>copyTo: 0x1401694a0: a(n) Context
>>>>>     0x7ffeefbe3f18 M Context>copyTo: 0x140169390: a(n) Context
>>>>>     0x7ffeefbf47c8 M Context>copyTo: 0x1401692b0: a(n) Context
>>>>>     0x7ffeefbf4810 M Context>copyTo: 0x1401691f8: a(n) Context
>>>>>     0x7ffeefbf4858 M Context>copyTo: 0x140169140: a(n) Context
>>>>>     0x7ffeefbf48a0 M Context>copyTo: 0x140169058: a(n) Context
>>>>>     0x7ffeefbf48e8 M Context>copyTo: 0x140168f80: a(n) Context
>>>>>     0x7ffeefbf4930 M Context>copyTo: 0x140168ec8: a(n) Context
>>>>>     0x7ffeefbf4978 M Context>copyTo: 0x140168e10: a(n) Context
>>>>>     0x7ffeefbf49c0 M Context>copyTo: 0x140168d38: a(n) Context
>>>>>     0x7ffeefbf4a08 M Context>copyTo: 0x140168c58: a(n) Context
>>>>>     0x7ffeefbf4a50 M Context>copyTo: 0x140168b80: a(n) Context
>>>>>     0x7ffeefbf4a98 M Context>copyTo: 0x140168ac8: a(n) Context
>>>>>     0x7ffeefbf4ae0 M Context>copyTo: 0x140168a10: a(n) Context
>>>>>     0x7ffeefbf4b28 M Context>copyTo: 0x140168900: a(n) Context
>>>>>     0x7ffeefbf4b70 M Context>copyTo: 0x140168810: a(n) Context
>>>>>     0x7ffeefbf4bb8 M Context>copyTo: 0x140168718: a(n) Context
>>>>>     0x7ffeefbf4c00 M Context>copyTo: 0x140168640: a(n) Context
>>>>>     0x7ffeefbf4c48 M Context>copyTo: 0x14039c748: a(n) Context
>>>>>     0x7ffeefbf4c90 M Context>copyTo: 0x14039c5d8: a(n) Context
>>>>>     0x7ffeefbf4cd8 M Context>copyTo: 0x1401684b8: a(n) Context
>>>>>     0x7ffeefbf4d20 M Context>copyTo: 0x1401683d8: a(n) Context
>>>>>     0x7ffeefbf4d68 M Context>copyTo: 0x14039c2f8: a(n) Context
>>>>>     0x7ffeefbf4db0 M Context>copyTo: 0x140167960: a(n) Context
>>>>>     0x7ffeefbf4df8 M Context>copyTo: 0x1401678a8: a(n) Context
>>>>>     0x7ffeefbf4e40 M Context>copyTo: 0x140167788: a(n) Context
>>>>>     0x7ffeefbf4e88 M Context>copyTo: 0x14039bf60: a(n) Context
>>>>>     0x7ffeefbf4ed0 M Context>copyTo: 0x14039bd38: a(n) Context
>>>>>     0x7ffeefbf4f18 M Context>copyTo: 0x14039ba58: a(n) Context
>>>>>     0x7ffeefbf07c8 M Context>copyTo: 0x14039b8e8: a(n) Context
>>>>>     0x7ffeefbf0810 M Context>copyTo: 0x140167578: a(n) Context
>>>>>     0x7ffeefbf0858 M Context>copyTo: 0x140167478: a(n) Context
>>>>>     0x7ffeefbf08a0 M Context>copyTo: 0x14039b608: a(n) Context
>>>>>     0x7ffeefbf08e8 M Context>copyTo: 0x14039b498: a(n) Context
>>>>>     0x7ffeefbf0930 M Context>copyTo: 0x14039b328: a(n) Context
>>>>>     0x7ffeefbf0978 M Context>copyTo: 0x140167310: a(n) Context
>>>>>     0x7ffeefbf09c0 M Context>copyTo: 0x1401671e8: a(n) Context
>>>>>     0x7ffeefbf0a08 M Context>copyTo: 0x140167108: a(n) Context
>>>>>     0x7ffeefbf0a50 M Context>copyTo: 0x14039af90: a(n) Context
>>>>>     0x7ffeefbf0a98 M Context>copyTo: 0x14039ae20: a(n) Context
>>>>>     0x7ffeefbf0ae0 M Context>copyTo: 0x140166fe0: a(n) Context
>>>>>     0x7ffeefbf0b28 M Context>copyTo: 0x140166ec0: a(n) Context
>>>>>     0x7ffeefbf0b70 M Context>copyTo: 0x14039ab40: a(n) Context
>>>>>     0x7ffeefbf0bb8 M Context>copyTo: 0x14039a9d0: a(n) Context
>>>>>     0x7ffeefbf0c00 M Context>copyTo: 0x14039a860: a(n) Context
>>>>>     0x7ffeefbf0c48 M Context>copyTo: 0x14039a6f0: a(n) Context
>>>>>     0x7ffeefbf0c90 M Context>copyTo: 0x140166ca0: a(n) Context
>>>>>     0x7ffeefbf0cd8 M Context>copyTo: 0x140166bb8: a(n) Context
>>>>>     0x7ffeefbf0d20 M Context>copyTo: 0x140165f60: a(n) Context
>>>>>     0x7ffeefbf0d68 M Context>copyTo: 0x140165ea8: a(n) Context
>>>>>     0x7ffeefbf0db0 M Context>copyTo: 0x14039a2a0: a(n) Context
>>>>>     0x7ffeefbf0df8 M Context>copyTo: 0x140165d48: a(n) Context
>>>>>     0x7ffeefbf0e40 M Context>copyTo: 0x140165c20: a(n) Context
>>>>>     0x7ffeefbf0e88 M Context>copyTo: 0x140165b40: a(n) Context
>>>>>     0x7ffeefbf0ed0 M Context>copyTo: 0x140399e50: a(n) Context
>>>>>     0x7ffeefbf0f18 M Context>copyTo: 0x140399b70: a(n) Context
>>>>>     0x7ffeefbee7c8 M Context>copyTo: 0x140165a18: a(n) Context
>>>>>     0x7ffeefbee810 M Context>copyTo: 0x1401658f8: a(n) Context
>>>>>     0x7ffeefbee858 M Context>copyTo: 0x140399890: a(n) Context
>>>>>     0x7ffeefbee8a0 M Context>copyTo: 0x140399720: a(n) Context
>>>>>     0x7ffeefbee8e8 M Context>copyTo: 0x1403995b0: a(n) Context
>>>>>     0x7ffeefbee930 M Context>copyTo: 0x140399440: a(n) Context
>>>>>     0x7ffeefbee978 M Context>copyTo: 0x1403992d0: a(n) Context
>>>>>     0x7ffeefbee9c0 M Context>copyTo: 0x140399160: a(n) Context
>>>>>     0x7ffeefbeea08 M Context>copyTo: 0x140398ff0: a(n) Context
>>>>>     0x7ffeefbeea50 M Context>copyTo: 0x140398e80: a(n) Context
>>>>>     0x7ffeefbeea98 M Context>copyTo: 0x140398d10: a(n) Context
>>>>>     0x7ffeefbeeae0 M Context>copyTo: 0x140165748: a(n) Context
>>>>>     0x7ffeefbeeb28 M Context>copyTo: 0x140165648: a(n) Context
>>>>>     0x7ffeefbeeb70 M Context>copyTo: 0x140398a30: a(n) Context
>>>>>     0x7ffeefbeebb8 M Context>copyTo: 0x1403988c0: a(n) Context
>>>>>     0x7ffeefbeec00 M Context>copyTo: 0x140165530: a(n) Context
>>>>>     0x7ffeefbeec48 M Context>copyTo: 0x140165458: a(n) Context
>>>>>     0x7ffeefbeec90 M Context>copyTo: 0x1403985e0: a(n) Context
>>>>>     0x7ffeefbeecd8 M Context>copyTo: 0x140398470: a(n) Context
>>>>>     0x7ffeefbeed20 M Context>copyTo: 0x140165088: a(n) Context
>>>>>     0x7ffeefbeed68 M Context>copyTo: 0x140166ae0: a(n) Context
>>>>>     0x7ffeefbeedb0 M Context>copyTo: 0x140398190: a(n) Context
>>>>>     0x7ffeefbeedf8 M Context>copyTo: 0x140398020: a(n) Context
>>>>>     0x7ffeefbeee40 M Context>copyTo: 0x140397eb0: a(n) Context
>>>>>     0x7ffeefbeee88 M Context>copyTo: 0x1401669d8: a(n) Context
>>>>>     0x7ffeefbeeed0 M Context>copyTo: 0x140397c88: a(n) Context
>>>>>     0x7ffeefbeef18 M Context>copyTo: 0x140394d08: a(n) Context
>>>>>     0x7ffeefbea798 M Context>copyTo: 0x140394e20: a(n) Context
>>>>>     0x7ffeefbea7e0 M Context>copyTo: 0x140397838: a(n) Context
>>>>>     0x7ffeefbea828 M Context>copyTo: 0x1403976c8: a(n) Context
>>>>>     0x7ffeefbea870 M Context>copyTo: 0x140397558: a(n) Context
>>>>>     0x7ffeefbea8b8 M Context>copyTo: 0x140395000: a(n) Context
>>>>>     0x7ffeefbea900 M Context>copyTo: 0x140397330: a(n) Context
>>>>>     0x7ffeefbea948 M Context>copyTo: 0x1403971c0: a(n) Context
>>>>>     0x7ffeefbea990 M Context>copyTo: 0x140397050: a(n) Context
>>>>>     0x7ffeefbea9d8 M Context>copyTo: 0x140396ee0: a(n) Context
>>>>>     0x7ffeefbeaa20 M Context>copyTo: 0x140396d70: a(n) Context
>>>>>     0x7ffeefbeaa68 M Context>copyTo: 0x1403958f8: a(n) Context
>>>>>     0x7ffeefbeaab0 M Context>copyTo: 0x140396b48: a(n) Context
>>>>>     0x7ffeefbeaaf8 M Context>copyTo: 0x140396298: a(n) Context
>>>>>     0x7ffeefbeab40 M Context>copyTo: 0x140396920: a(n) Context
>>>>>     0x7ffeefbeab88 M Context>copyTo: 0x1403967b0: a(n) Context
>>>>>     0x7ffeefbeabd0 M Context>copyTo: 0x1403961e0: a(n) Context
>>>>>     0x7ffeefbeac18 M Context>copyTo: 0x140396128: a(n) Context
>>>>>     0x7ffeefbeac60 M Context>copyTo: 0x140396070: a(n) Context
>>>>>     0x7ffeefbeacb8 I Context>copyTo: 0x140395e28: a(n) Context
>>>>>     0x7ffeefbead00 I ZeroDivide(Exception)>freezeUpTo: 0x140395de8: a(n) ZeroDivide
>>>>>     0x7ffeefbead48 I ZeroDivide(Exception)>freeze 0x140395de8: a(n) ZeroDivide
>>>>>     0x7ffeefbead88 I BrDebugglableElementStencil>freeze: 0x140396408: a(n) BrDebugglableElementStencil
>>>>>     0x7ffeefbeadd8 I ZeroDivide(Exception)>asDebuggableElement 0x140395de8: a(n) ZeroDivide
>>>>>     0x7ffeefbeae18 M [] in GtPhlowColumn>errorTreatedCellDataBinderFor: 0x140169e48: a(n) GtPhlowColumn
>>>>>     0x7ffeefbeae50 M BlockClosure>cull: 0x1403959f0: a(n) BlockClosure
>>>>>     0x7ffeefbeaea0 I Context>evaluateSignal: 0x140396298: a(n) Context
>>>>>     0x7ffeefbeaed8 M Context>handleSignal: 0x140396298: a(n) Context
>>>>>     0x7ffeefbeaf20 I ZeroDivide(Exception)>signal 0x140395de8: a(n) ZeroDivide
>>>>>     0x7ffeefbe7840 I ZeroDivide(Exception)>signal: 0x140395de8: a(n) ZeroDivide
>>>>>     0x7ffeefbe7888 I ZeroDivide class(Exception class)>signal: 0x1409f9490: a(n) ZeroDivide class
>>>>>     0x7ffeefbe78c0 M [] in GtPhlowColumnedListViewExamples>gtErrorInColumnDoDataBinderFor: 0x140168630: a(n) GtPhlowColumnedListViewExamples
>>>>>     0x7ffeefbe7908 M BlockClosure>glamourValueWithArgs: 0x140174180: a(n) BlockClosure
>>>>>     0x7ffeefbe7960 M [] in GtPhlowColumn>errorTreatedCellDataBinderFor: 0x140169e48: a(n) GtPhlowColumn
>>>>>     0x7ffeefbe7990 M BlockClosure>on:do: 0x1403959b0: a(n) BlockClosure
>>>>>     0x7ffeefbe79d0 M GtPhlowColumn>performBlock:onException: 0x140169e48: a(n) GtPhlowColumn
>>>>>     0x7ffeefbe7a18 M [] in GtPhlowColumn>errorTreatedCellDataBinderFor: 0x140169e48: a(n) GtPhlowColumn
>>>>>     0x7ffeefbe7a60 M BlockClosure>glamourValueWithArgs: 0x1401701c0: a(n) BlockClosure
>>>>>     0x7ffeefbe7a98 M BrStencilValuableExecutor>execute 0x140174230: a(n) BrStencilValuableExecutor
>>>>>     0x7ffeefbe7ad8 M BrColumnCellDataBinder(BrStencilBuilder)>build 0x140170448: a(n) BrColumnCellDataBinder
>>>>>     0x7ffeefbe7b38 I [] in BrColumnedListDataSource>onBindHolder:at: 0x140169f38: a(n) BrColumnedListDataSource
>>>>>     0x7ffeefbe7b98 I OrderedCollection(SequenceableCollection)>with:do: 0x140169ff8: a(n) OrderedCollection
>>>>>     0x7ffeefbe7bf8 I BrColumnedListDataSource>onBindHolder:at: 0x140169f38: a(n) BrColumnedListDataSource
>>>>>     0x7ffeefbe7c48 I BrColumnedListDataSource(BlInfiniteDataSource)>onBindHolder:at:payloads: 0x140169f38: a(n) BrColumnedListDataSource
>>>>>     0x7ffeefbe7ca0 M [] in BrColumnedListDataSource(BlInfiniteDataSource)>bindHolder:at: 0x140169f38: a(n) BrColumnedListDataSource
>>>>>     0x7ffeefbe7ce0 M BlockClosure>ensure: 0x140394df0: a(n) BlockClosure
>>>>>     0x7ffeefbe7d18 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe7d58 M BrColumnedListDataSource(BlInfiniteDataSource)>bindHolder:at: 0x140169f38: a(n) BrColumnedListDataSource
>>>>>     0x7ffeefbe7d98 M BlInfiniteRecyclerController>bindHolder:at: 0x1401662c0: a(n) BlInfiniteRecyclerController
>>>>>     0x7ffeefbe7e10 M BlInfiniteRecycler>elementFor:dryRun: 0x1401652b8: a(n) BlInfiniteRecycler
>>>>>     0x7ffeefbe7e50 M BlInfiniteRecycler>elementFor: 0x1401652b8: a(n) BlInfiniteRecycler
>>>>>     0x7ffeefbe7e98 M [] in BlInfiniteLinearLayoutState>nextElement:in: 0x140165020: a(n) BlInfiniteLinearLayoutState
>>>>>     0x7ffeefbe7ed8 M BlockClosure>ensure: 0x140166a90: a(n) BlockClosure
>>>>>     0x7ffeefbe7f10 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe27d0 M BlInfiniteLinearLayoutState>nextElement:in: 0x140165020: a(n) BlInfiniteLinearLayoutState
>>>>>     0x7ffeefbe2818 M [] in BlInfiniteLinearLayout>layoutChunkAdd 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2858 M BlockClosure>ensure: 0x140165410: a(n) BlockClosure
>>>>>     0x7ffeefbe2890 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe28d8 M BlInfiniteLinearLayout>layoutChunkAdd 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2910 M [] in BlInfiniteLinearLayout>layoutChunk 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2950 M BlockClosure>ensure: 0x140165600: a(n) BlockClosure
>>>>>     0x7ffeefbe2988 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe29e0 M BlInfiniteLinearLayout>layoutChunk 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2a48 I BlInfiniteLinearLayout>fillLayout: 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2ab8 I BlInfiniteLinearLayout>layoutChildrenFillFromStart: 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2b00 I BlInfiniteLinearLayout>layoutChildrenFill: 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2b58 I BlInfiniteLinearLayout>layoutChildrenIn:state: 0x140165320: a(n) BlInfiniteLinearLayout
>>>>>     0x7ffeefbe2ba8 I BrInfiniteListElement(BlInfiniteElement)>dispatchLayoutSecondStep 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2be8 I BrInfiniteListElement(BlInfiniteElement)>dispatchLayout 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2c18 M BrInfiniteListElement(BlInfiniteElement)>onLayout: 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2c58 M [] in BrInfiniteListElement(BlElement)>applyLayoutSafelyIn: 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2c98 M BlockClosure>ensure: 0x1401658b0: a(n) BlockClosure
>>>>>     0x7ffeefbe2cd0 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe2d30 M BrInfiniteListElement(BlElement)>applyLayoutSafelyIn: 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2d70 M [] in BrInfiniteListElement(BlElement)>applyLayoutIn: 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2da0 M BlockClosure>on:do: 0x140165ad0: a(n) BlockClosure
>>>>>     0x7ffeefbe2de0 M BlCompositeErrorHandler(BlErrorHandler)>with:do:failed: 0x140165b28: a(n) BlCompositeErrorHandler
>>>>>     0x7ffeefbe2e28 M BrInfiniteListElement(BlElement)>applyLayoutIn: 0x140165140: a(n) BrInfiniteListElement
>>>>>     0x7ffeefbe2e80 M [] in BlLinearLayoutVerticalOrientation>layout:in: 0x140165d38: a(n) BlLinearLayoutVerticalOrientation
>>>>>     0x7ffeefbe2ed0 M [] in BlChildrenAccountedByLayout(BlChildren)>inject:into: 0x140165e50: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe2f18 M Array(SequenceableCollection)>do: 0x140165e98: a(n) Array
>>>>>     0x7ffeefbe9868 M BlChildrenAccountedByLayout(BlChildrenSubset)>do: 0x140165e50: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe98a8 M BlChildrenAccountedByLayout(BlChildren)>inject:into: 0x140165e50: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe9918 M BlLinearLayoutVerticalOrientation>layout:in: 0x140165d38: a(n) BlLinearLayoutVerticalOrientation
>>>>>     0x7ffeefbe9958 M BlLinearLayout>layout:in: 0x140166e18: a(n) BlLinearLayout
>>>>>     0x7ffeefbe9998 M BrColumnedList(BlElement)>onLayout: 0x140166d70: a(n) BrColumnedList
>>>>>     0x7ffeefbe99d8 M [] in BrColumnedList(BlElement)>applyLayoutSafelyIn: 0x140166d70: a(n) BrColumnedList
>>>>>     0x7ffeefbe9a18 M BlockClosure>ensure: 0x140166e78: a(n) BlockClosure
>>>>>     0x7ffeefbe9a50 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe9ab0 M BrColumnedList(BlElement)>applyLayoutSafelyIn: 0x140166d70: a(n) BrColumnedList
>>>>>     0x7ffeefbe9af0 M [] in BrColumnedList(BlElement)>applyLayoutIn: 0x140166d70: a(n) BrColumnedList
>>>>>     0x7ffeefbe9b20 M BlockClosure>on:do: 0x140167098: a(n) BlockClosure
>>>>>     0x7ffeefbe9b60 M BlCompositeErrorHandler(BlErrorHandler)>with:do:failed: 0x1401670f0: a(n) BlCompositeErrorHandler
>>>>>     0x7ffeefbe9ba8 M BrColumnedList(BlElement)>applyLayoutIn: 0x140166d70: a(n) BrColumnedList
>>>>>     0x7ffeefbe9c00 M [] in BlLinearLayoutVerticalOrientation>layout:in: 0x140167300: a(n) BlLinearLayoutVerticalOrientation
>>>>>     0x7ffeefbe9c50 M [] in BlChildrenAccountedByLayout(BlChildren)>inject:into: 0x140167418: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe9c98 M Array(SequenceableCollection)>do: 0x140167460: a(n) Array
>>>>>     0x7ffeefbe9cd0 M BlChildrenAccountedByLayout(BlChildrenSubset)>do: 0x140167418: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe9d10 M BlChildrenAccountedByLayout(BlChildren)>inject:into: 0x140167418: a(n) BlChildrenAccountedByLayout
>>>>>     0x7ffeefbe9d80 M BlLinearLayoutVerticalOrientation>layout:in: 0x140167300: a(n) BlLinearLayoutVerticalOrientation
>>>>>     0x7ffeefbe9dc0 M BlLinearLayout>layout:in: 0x1401676e0: a(n) BlLinearLayout
>>>>>     0x7ffeefbe9e00 M BlElement>onLayout: 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbe9e40 M [] in BlElement>applyLayoutSafelyIn: 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbe9e80 M BlockClosure>ensure: 0x140167740: a(n) BlockClosure
>>>>>     0x7ffeefbe9eb8 M BlNullTelemetry(BlTelemetry)>timeSync:during: 0x14f0f8ce0: a(n) BlNullTelemetry
>>>>>     0x7ffeefbe9f18 M BlElement>applyLayoutSafelyIn: 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbed7e0 M [] in BlElement>applyLayoutIn: 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbed810 M BlockClosure>on:do: 0x140168368: a(n) BlockClosure
>>>>>     0x7ffeefbed850 M BlCompositeErrorHandler(BlErrorHandler)>with:do:failed: 0x1401683c0: a(n) BlCompositeErrorHandler
>>>>>     0x7ffeefbed898 M BlElement>applyLayoutIn: 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbed908 I BlElement>computeLayout 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbed948 I BlElement>forceLayout 0x140167648: a(n) BlElement
>>>>>     0x7ffeefbed9a8 I GtPhlowColumnedListViewExamples>errorInColumnDoDataBinder 0x140168630: a(n) GtPhlowColumnedListViewExamples
>>>>>     0x7ffeefbed9d8 M GtExampleDebugger(GtExampleEvaluator)>primitiveProcessExample:withEvaluationContext: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbeda38 M [] in GtExampleDebugger(GtExampleEvaluator)>basicProcess: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbeda78 M BlockClosure>ensure: 0x1401688c8: a(n) BlockClosure
>>>>>     0x7ffeefbedac8 M GtExampleDebugger(GtExampleEvaluator)>basicProcess: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedb00 M GtExampleDebugger(GtExampleProcessor)>process: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedb38 M [] in GtExampleDebugger(GtExampleProcessor)>value 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedb68 M BlockClosure>on:do: 0x140168c38: a(n) BlockClosure
>>>>>     0x7ffeefbedba8 M GtCurrentExampleContext class>use:during: 0x1446188f0: a(n) GtCurrentExampleContext class
>>>>>     0x7ffeefbedbe8 M GtExampleDebugger(GtExampleProcessor)>withContextDo: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedc20 M GtExampleDebugger(GtExampleProcessor)>value 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedc50 M [] in GtExampleDebugger(GtExampleEvaluator)>result 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedc80 M GtExampleDebugger>do:on:do: 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedcc8 M GtExampleDebugger(GtExampleEvaluator)>result 0x1401686f8: a(n) GtExampleDebugger
>>>>>     0x7ffeefbedcf8 M GtExample>debug 0x19709dfc8: a(n) GtExample
>>>>>     0x7ffeefbedd30 M [] in GtExamplesHDReport>runExample: 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbedd60 M BlockClosure>on:do: 0x140169368: a(n) BlockClosure
>>>>>     0x7ffeefbeddb0 M [] in GtExamplesHDReport>runExample: 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbedde8 M Time class>microsecondsToRun: 0x1409fcff0: a(n) Time class
>>>>>     0x7ffeefbede20 M Time class>millisecondsToRun: 0x1409fcff0: a(n) Time class
>>>>>     0x7ffeefbede60 M BlockClosure>timeToRun 0x140169558: a(n) BlockClosure
>>>>>     0x7ffeefbede98 M GtExamplesHDReport>beginExample:runBlock: 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbedee0 M GtExamplesHDReport>runExample: 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbedf18 M [] in GtExamplesHDReport>runAll 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdea38 M OrderedCollection>do: 0x197099e08: a(n) OrderedCollection
>>>>>     0x7ffeefbdea70 M [] in GtExamplesHDReport>runAll 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdeab0 M [] in CurrentExecutionEnvironment class>activate:for: 0x140a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbdeaf0 M BlockClosure>ensure: 0x19709a0b0: a(n) BlockClosure
>>>>>     0x7ffeefbdeb30 M CurrentExecutionEnvironment class>activate:for: 0x140a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbdeb70 M TestExecutionEnvironment(ExecutionEnvironment)>beActiveDuring: 0x197099fb8: a(n) TestExecutionEnvironment
>>>>>     0x7ffeefbdeba8 M DefaultExecutionEnvironment>runTestsBy: 0x1409f7da8: a(n) DefaultExecutionEnvironment
>>>>>     0x7ffeefbdebe0 M CurrentExecutionEnvironment class>runTestsBy: 0x140a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbdec18 M GtExamplesHDReport>runAll 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdec48 M [] in GtExamplesHDReport>run 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdec80 M Time class>microsecondsToRun: 0x1409fcff0: a(n) Time class
>>>>>     0x7ffeefbdecb8 M Time class>millisecondsToRun: 0x1409fcff0: a(n) Time class
>>>>>     0x7ffeefbdecf8 M BlockClosure>timeToRun 0x19709a618: a(n) BlockClosure
>>>>>     0x7ffeefbded28 M [] in GtExamplesHDReport>run 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbded68 M BlockClosure>ensure: 0x19709a918: a(n) BlockClosure
>>>>>     0x7ffeefbdeda0 M [] in GtExamplesHDReport>run 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdedd0 M Author>ifUnknownAuthorUse:during: 0x14102a740: a(n) Author
>>>>>     0x7ffeefbdee10 M GtExamplesHDReport>run 0x197099d30: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdee48 M GtExamplesHDReport class>runPackage: 0x144618008: a(n) GtExamplesHDReport class
>>>>>     0x7ffeefbdee80 M [] in GtExamplesHDReport class(HDReport class)>runPackages: 0x144618008: a(n) GtExamplesHDReport class
>>>>>     0x7ffeefbdeed0 M [] in Set>collect: 0x145bbc4d8: a(n) Set
>>>>>     0x7ffeefbdef18 M Array(SequenceableCollection)>do: 0x145bbc520: a(n) Array
>>>>>        0x145bbcc78 s Set>collect:
>>>>>        0x145bbcd30 s GtExamplesHDReport class(HDReport class)>runPackages:
>>>>>        0x145bbce28 s [] in GtExamplesCommandLineHandler>runPackages
>>>>>        0x145bbcf08 s BlockClosure>ensure:
>>>>>        0x14e950710 s UIManager class>nonInteractiveDuring:
>>>>>        0x14e9507c8 s GtExamplesCommandLineHandler>runPackages
>>>>>        0x14e950880 s GtExamplesCommandLineHandler>activate
>>>>>        0x14e950938 s GtExamplesCommandLineHandler class(CommandLineHandler class)>activateWith:
>>>>>        0x14e9509f0 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>        0x14e950aa8 s BlockClosure>on:do:
>>>>>        0x14e950b60 s PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>        0x14e950c38 s PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand
>>>>>        0x14e950cf0 s PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument:
>>>>>        0x14e950db8 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>        0x14e950e90 s BlockClosure>on:do:
>>>>>        0x14e950f68 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>        0x14e951040 s [] in BlockClosure>newProcess
>>>>> 
>>>>> 
>>>>> 
>>>>> Process 18798 stopped
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=EXC_I386_BPT, subcode=0x0)
>>>>>     frame #0: 0x00000001481107d1
>>>>> ->  0x1481107d1: int3   
>>>>>     0x1481107d2: int3   
>>>>>     0x1481107d3: int3   
>>>>>     0x1481107d4: int3   
>>>>> Target 0: (Pharo) stopped.
>>>>> 
>>>>> (lldb) call printAllStacks()
>>>>> Process        0x15511b938 priority 40
>>>>>     0x7ffeefbf0a18 M Context(Object)>copy 0x15691cf68: a(n) Context
>>>>>     0x7ffeefbf0a50 M Context>copyTo: 0x15691cf68: a(n) Context
>>>>>     0x7ffeefbf0a98 M Context>copyTo: 0x15691ce78: a(n) Context
>>>>>     0x7ffeefbf0ae0 M Context>copyTo: 0x15691cdc0: a(n) Context
>>>>>     0x7ffeefbf0b28 M Context>copyTo: 0x15691cd08: a(n) Context
>>>>>     0x7ffeefbf0b70 M Context>copyTo: 0x15691cc50: a(n) Context
>>>>>     0x7ffeefbf0bb8 M Context>copyTo: 0x15691cb70: a(n) Context
>>>>>     0x7ffeefbf0c00 M Context>copyTo: 0x15691ca90: a(n) Context
>>>>>     0x7ffeefbf0c48 M Context>copyTo: 0x15691c998: a(n) Context
>>>>>     0x7ffeefbf0c90 M Context>copyTo: 0x15691c8e0: a(n) Context
>>>>>     0x7ffeefbf0cd8 M Context>copyTo: 0x15691c828: a(n) Context
>>>>>     0x7ffeefbf0d20 M Context>copyTo: 0x14874a2c8: a(n) Context
>>>>>     0x7ffeefbf0d68 M Context>copyTo: 0x14874a158: a(n) Context
>>>>>     0x7ffeefbf0db0 M Context>copyTo: 0x148749fe8: a(n) Context
>>>>>     0x7ffeefbf0df8 M Context>copyTo: 0x14816e2e8: a(n) Context
>>>>>     0x7ffeefbf0e40 M Context>copyTo: 0x148749dc0: a(n) Context
>>>>>     0x7ffeefbf0e88 M Context>copyTo: 0x14816e210: a(n) Context
>>>>>     0x7ffeefbf0ed0 M Context>copyTo: 0x148749ae0: a(n) Context
>>>>>     0x7ffeefbf0f18 M Context>copyTo: 0x14816e118: a(n) Context
>>>>>     0x7ffeefbdc7c8 M Context>copyTo: 0x148749748: a(n) Context
>>>>>     0x7ffeefbdc810 M Context>copyTo: 0x1487495d8: a(n) Context
>>>>>     0x7ffeefbdc858 M Context>copyTo: 0x148749468: a(n) Context
>>>>>     0x7ffeefbdc8a0 M Context>copyTo: 0x1487492f8: a(n) Context
>>>>>     0x7ffeefbdc8e8 M Context>copyTo: 0x14816e040: a(n) Context
>>>>>     0x7ffeefbdc930 M Context>copyTo: 0x1487490d0: a(n) Context
>>>>>     0x7ffeefbdc978 M Context>copyTo: 0x148748f60: a(n) Context
>>>>>     0x7ffeefbdc9c0 M Context>copyTo: 0x148748df0: a(n) Context
>>>>>     0x7ffeefbdca08 M Context>copyTo: 0x14816df38: a(n) Context
>>>>>     0x7ffeefbdca50 M Context>copyTo: 0x148748bc8: a(n) Context
>>>>>     0x7ffeefbdca98 M Context>copyTo: 0x14816de20: a(n) Context
>>>>>     0x7ffeefbdcae0 M Context>copyTo: 0x14816eeb8: a(n) Context
>>>>>     0x7ffeefbdcb28 M Context>copyTo: 0x1487488e8: a(n) Context
>>>>>     0x7ffeefbdcb70 M Context>copyTo: 0x148748778: a(n) Context
>>>>>     0x7ffeefbdcbb8 M Context>copyTo: 0x14866e858: a(n) Context
>>>>>     0x7ffeefbdcc00 M Context>copyTo: 0x148748550: a(n) Context
>>>>>     0x7ffeefbdcc48 M Context>copyTo: 0x1487483e0: a(n) Context
>>>>>     0x7ffeefbdcc90 M Context>copyTo: 0x148748270: a(n) Context
>>>>>     0x7ffeefbdccd8 M Context>copyTo: 0x148748100: a(n) Context
>>>>>     0x7ffeefbdcd20 M Context>copyTo: 0x148676078: a(n) Context
>>>>>     0x7ffeefbdcd68 M Context>copyTo: 0x148747ed8: a(n) Context
>>>>>     0x7ffeefbdcdb0 M Context>copyTo: 0x148747d68: a(n) Context
>>>>>     0x7ffeefbdcdf8 M Context>copyTo: 0x148747bf8: a(n) Context
>>>>>     0x7ffeefbdce40 M Context>copyTo: 0x148676280: a(n) Context
>>>>>     0x7ffeefbdce88 M Context>copyTo: 0x1487479d0: a(n) Context
>>>>>     0x7ffeefbdced0 M Context>copyTo: 0x1487477a8: a(n) Context
>>>>>     0x7ffeefbdcf18 M Context>copyTo: 0x148676400: a(n) Context
>>>>>     0x7ffeefbda7c8 M Context>copyTo: 0x148747410: a(n) Context
>>>>>     0x7ffeefbda810 M Context>copyTo: 0x1486764d8: a(n) Context
>>>>>     0x7ffeefbda858 M Context>copyTo: 0x1487471e8: a(n) Context
>>>>>     0x7ffeefbda8a0 M Context>copyTo: 0x148747078: a(n) Context
>>>>>     0x7ffeefbda8e8 M Context>copyTo: 0x148746f08: a(n) Context
>>>>>     0x7ffeefbda930 M Context>copyTo: 0x14873f918: a(n) Context
>>>>>     0x7ffeefbda978 M Context>copyTo: 0x148746ce0: a(n) Context
>>>>>     0x7ffeefbda9c0 M Context>copyTo: 0x148746b70: a(n) Context
>>>>>     0x7ffeefbdaa08 M Context>copyTo: 0x148746a00: a(n) Context
>>>>>     0x7ffeefbdaa50 M Context>copyTo: 0x148746890: a(n) Context
>>>>>     0x7ffeefbdaa98 M Context>copyTo: 0x148746720: a(n) Context
>>>>>     0x7ffeefbdaae0 M Context>copyTo: 0x1487415b8: a(n) Context
>>>>>     0x7ffeefbdab28 M Context>copyTo: 0x1487412a8: a(n) Context
>>>>>     0x7ffeefbdab70 M Context>copyTo: 0x148746440: a(n) Context
>>>>>     0x7ffeefbdabb8 M Context>copyTo: 0x148745088: a(n) Context
>>>>>     0x7ffeefbdac00 M Context>copyTo: 0x148746218: a(n) Context
>>>>>     0x7ffeefbdac48 M Context>copyTo: 0x1487414e0: a(n) Context
>>>>>     0x7ffeefbdac90 M Context>copyTo: 0x148745ff0: a(n) Context
>>>>>     0x7ffeefbdacd8 M Context>copyTo: 0x148741670: a(n) Context
>>>>>     0x7ffeefbdad20 M Context>copyTo: 0x148744fd0: a(n) Context
>>>>>     0x7ffeefbdad68 M Context>copyTo: 0x148745ba0: a(n) Context
>>>>>     0x7ffeefbdadb0 M Context>copyTo: 0x148745a30: a(n) Context
>>>>>     0x7ffeefbdadf8 M Context>copyTo: 0x148744bd8: a(n) Context
>>>>>     0x7ffeefbdae40 M Context>copyTo: 0x148745808: a(n) Context
>>>>>     0x7ffeefbdae88 M Context>copyTo: 0x148745698: a(n) Context
>>>>>     0x7ffeefbdaed0 M Context>copyTo: 0x148745528: a(n) Context
>>>>>     0x7ffeefbdaf18 M Context>copyTo: 0x148744f18: a(n) Context
>>>>>     0x7ffeefbe0988 I Context>copyTo: 0x148744e60: a(n) Context
>>>>>     0x7ffeefbe09d0 I MessageNotUnderstood(Exception)>freezeUpTo: 0x148744e10: a(n) MessageNotUnderstood
>>>>>     0x7ffeefbe0a18 I MessageNotUnderstood(Exception)>freeze 0x148744e10: a(n) MessageNotUnderstood
>>>>>     0x7ffeefbe0a48 M [] in GtExampleEvaluator>result 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0a80 M BlockClosure>cull: 0x1487414c0: a(n) BlockClosure
>>>>>     0x7ffeefbe0ac0 M Context>evaluateSignal: 0x148745088: a(n) Context
>>>>>     0x7ffeefbe0af8 M Context>handleSignal: 0x148745088: a(n) Context
>>>>>     0x7ffeefbe0b30 M Context>handleSignal: 0x148744fd0: a(n) Context
>>>>>     0x7ffeefbe0b68 M MessageNotUnderstood(Exception)>signal 0x148744e10: a(n) MessageNotUnderstood
>>>>>     0x7ffeefbe0bb8 I GtDummyExamplesWithInheritanceSubclassB(Object)>doesNotUnderstand: exampleH 0x148744bc8: a(n) GtDummyExamplesWithInheritanceSubclassB
>>>>>     0x7ffeefbe0bf0 M GtExampleEvaluator>primitiveProcessExample:withEvaluationContext: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0c50 M [] in GtExampleEvaluator>basicProcess: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0c90 M BlockClosure>ensure: 0x148744c90: a(n) BlockClosure
>>>>>     0x7ffeefbe0ce0 M GtExampleEvaluator>basicProcess: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0d18 M GtExampleEvaluator(GtExampleProcessor)>process: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0d50 M [] in GtExampleEvaluator(GtExampleProcessor)>value 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0d80 M BlockClosure>on:do: 0x148741598: a(n) BlockClosure
>>>>>     0x7ffeefbe0dc0 M GtCurrentExampleContext class>use:during: 0x14c618920: a(n) GtCurrentExampleContext class
>>>>>     0x7ffeefbe0e00 M GtExampleEvaluator(GtExampleProcessor)>withContextDo: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0e38 M GtExampleEvaluator(GtExampleProcessor)>value 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0e68 M [] in GtExampleEvaluator>result 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0e98 M BlockClosure>on:do: 0x148741360: a(n) BlockClosure
>>>>>     0x7ffeefbe0ed8 M GtExampleEvaluator>do:on:do: 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbe0f20 M GtExampleEvaluator>result 0x148741238: a(n) GtExampleEvaluator
>>>>>     0x7ffeefbde8b8 M GtExample>run 0x148740050: a(n) GtExample
>>>>>     0x7ffeefbde8e8 M GtExample>result 0x148740050: a(n) GtExample
>>>>>     0x7ffeefbde930 I GtExamplesExamplesWithInheritance>resultOfInvalidExampleWithInvalidSuperclassProvider 0x14873f908: a(n) GtExamplesExamplesWithInheritance
>>>>>     0x7ffeefbde960 M GtExampleDebugger(GtExampleEvaluator)>primitiveProcessExample:withEvaluationContext: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbde9c0 M [] in GtExampleDebugger(GtExampleEvaluator)>basicProcess: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdea00 M BlockClosure>ensure: 0x14873f9d0: a(n) BlockClosure
>>>>>     0x7ffeefbdea50 M GtExampleDebugger(GtExampleEvaluator)>basicProcess: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdea88 M GtExampleDebugger(GtExampleProcessor)>process: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdeac0 M [] in GtExampleDebugger(GtExampleProcessor)>value 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdeaf0 M BlockClosure>on:do: 0x1486764b8: a(n) BlockClosure
>>>>>     0x7ffeefbdeb30 M GtCurrentExampleContext class>use:during: 0x14c618920: a(n) GtCurrentExampleContext class
>>>>>     0x7ffeefbdeb70 M GtExampleDebugger(GtExampleProcessor)>withContextDo: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdeba8 M GtExampleDebugger(GtExampleProcessor)>value 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdebd8 M [] in GtExampleDebugger(GtExampleEvaluator)>result 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdec08 M GtExampleDebugger>do:on:do: 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdec50 M GtExampleDebugger(GtExampleEvaluator)>result 0x148676210: a(n) GtExampleDebugger
>>>>>     0x7ffeefbdec80 M GtExample>debug 0x148188088: a(n) GtExample
>>>>>     0x7ffeefbdecb8 M [] in GtExamplesHDReport>runExample: 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdece8 M BlockClosure>on:do: 0x148676130: a(n) BlockClosure
>>>>>     0x7ffeefbded38 M [] in GtExamplesHDReport>runExample: 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbded70 M Time class>microsecondsToRun: 0x1489fcff0: a(n) Time class
>>>>>     0x7ffeefbdeda8 M Time class>millisecondsToRun: 0x1489fcff0: a(n) Time class
>>>>>     0x7ffeefbdede8 M BlockClosure>timeToRun 0x14866e910: a(n) BlockClosure
>>>>>     0x7ffeefbdee20 M GtExamplesHDReport>beginExample:runBlock: 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdee68 M GtExamplesHDReport>runExample: 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdeea0 M [] in GtExamplesHDReport>runAll 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbdeee8 M OrderedCollection>do: 0x14816ee98: a(n) OrderedCollection
>>>>>     0x7ffeefbdef20 M [] in GtExamplesHDReport>runAll 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8ab0 M [] in CurrentExecutionEnvironment class>activate:for: 0x148a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbd8af0 M BlockClosure>ensure: 0x14816ded8: a(n) BlockClosure
>>>>>     0x7ffeefbd8b30 M CurrentExecutionEnvironment class>activate:for: 0x148a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbd8b70 M TestExecutionEnvironment(ExecutionEnvironment)>beActiveDuring: 0x14816ddc0: a(n) TestExecutionEnvironment
>>>>>     0x7ffeefbd8ba8 M DefaultExecutionEnvironment>runTestsBy: 0x1489f7da8: a(n) DefaultExecutionEnvironment
>>>>>     0x7ffeefbd8be0 M CurrentExecutionEnvironment class>runTestsBy: 0x148a02930: a(n) CurrentExecutionEnvironment class
>>>>>     0x7ffeefbd8c18 M GtExamplesHDReport>runAll 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8c48 M [] in GtExamplesHDReport>run 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8c80 M Time class>microsecondsToRun: 0x1489fcff0: a(n) Time class
>>>>>     0x7ffeefbd8cb8 M Time class>millisecondsToRun: 0x1489fcff0: a(n) Time class
>>>>>     0x7ffeefbd8cf8 M BlockClosure>timeToRun 0x14816e0f8: a(n) BlockClosure
>>>>>     0x7ffeefbd8d28 M [] in GtExamplesHDReport>run 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8d68 M BlockClosure>ensure: 0x14816e1d0: a(n) BlockClosure
>>>>>     0x7ffeefbd8da0 M [] in GtExamplesHDReport>run 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8dd0 M Author>ifUnknownAuthorUse:during: 0x14902a740: a(n) Author
>>>>>     0x7ffeefbd8e10 M GtExamplesHDReport>run 0x14816dff0: a(n) GtExamplesHDReport
>>>>>     0x7ffeefbd8e48 M GtExamplesHDReport class>runPackage: 0x14c618038: a(n) GtExamplesHDReport class
>>>>>     0x7ffeefbd8e80 M [] in GtExamplesHDReport class(HDReport class)>runPackages: 0x14c618038: a(n) GtExamplesHDReport class
>>>>>     0x7ffeefbd8ed0 M [] in Set>collect: 0x15691c088: a(n) Set
>>>>>     0x7ffeefbd8f18 M Array(SequenceableCollection)>do: 0x15691c188: a(n) Array
>>>>>        0x15691c8e0 s Set>collect:
>>>>>        0x15691c998 s GtExamplesHDReport class(HDReport class)>runPackages:
>>>>>        0x15691ca90 s [] in GtExamplesCommandLineHandler>runPackages
>>>>>        0x15691cb70 s BlockClosure>ensure:
>>>>>        0x15691cc50 s UIManager class>nonInteractiveDuring:
>>>>>        0x15691cd08 s GtExamplesCommandLineHandler>runPackages
>>>>>        0x15691cdc0 s GtExamplesCommandLineHandler>activate
>>>>>        0x15691ce78 s GtExamplesCommandLineHandler class(CommandLineHandler class)>activateWith:
>>>>>        0x15691cf68 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>        0x15691d048 s BlockClosure>on:do:
>>>>>        0x15691d128 s PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>        0x15691d200 s PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand
>>>>>        0x15691d2b8 s PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument:
>>>>>        0x15691d380 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>        0x15691d458 s BlockClosure>on:do:
>>>>>        0x15691d530 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>        0x15691d608 s [] in BlockClosure>newProcess
>>>>> 
>>>>> 
>>>>> (lldb) call dumpPrimTraceLog()
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> primitiveChangeClassTo:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> primitiveChangeClassTo:
>>>>> primitiveChangeClassTo:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> compare:with:collated:
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> primitiveChangeClassTo:
>>>>> primitiveChangeClassTo:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> compare:with:collated:
>>>>> primitiveChangeClassTo:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> compare:with:collated:
>>>>> compare:with:collated:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> basicNew:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> perform:withArguments:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> size
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> perform:withArguments:
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> perform:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> perform:withArguments:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> stringHash:initialHash:
>>>>> basicNew
>>>>> perform:withArguments:
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> class
>>>>> perform:withArguments:
>>>>> value:
>>>>> first
>>>>> basicNew
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> **StackOverflow**
>>>>> basicNew
>>>>> perform:withArguments:
>>>>> basicNew
>>>>> findNextHandlerOrSignalingContext
>>>>> tempAt:
>>>>> class
>>>>> findNextHandlerOrSignalingContext
>>>>> tempAt:
>>>>> tempAt:
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> **StackOverflow**
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> shallowCopy
>>>>> **CompactCode**
>>>>> 
>>>>> 
>>>>> 
>>>>>> On 26 Sep 2020, at 23:24, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>>>>>> 
>>>>>> Hi Andrei,
>>>>>> 
>>>>>>    fixed in commit 561b06530bbaed5f19e9d7f077a7df9eb3a8d236, VMMaker.oscog-eem.2824
>>>>>> 
>>>>>> 
>>>>>> On Fri, Sep 11, 2020 at 8:58 AM Andrei Chis <chisvasileandrei at gmail.com> wrote:
>>>>>>>  
>>>>>>> Hi,
>>>>>>> 
>>>>>>> We are getting often crashes on our CI when calling `Context>copyTo:` in a GT image and a vm build from https://github.com/feenkcom/opensmalltalk-vm.
>>>>>>> 
>>>>>>> To sum up during `Context>copyTo:`, `Object>>#copy` is called on a context leading to a segmentation fault crash. Looking at that context in lldb the pc looks off.  It has the value `0xfffffffffea7f6e1`.
>>>>>>> 
>>>>>>>  (lldb) call (void *) printOop(0x1206b6990)
>>>>>>>     0x1206b6990: a(n) Context
>>>>>>>      0x1206b6a48 0xfffffffffea7f6e1                0x9        0x1146b2e08        0x1206b6b00 
>>>>>>>      0x1206b6b28        0x1206b6b50 
>>>>>>> 
>>>>>>> Can this indicate some corruption or is it expected to have such values? `CoInterpreter>>ensureContextHasBytecodePC:` has code that also handles negative values for the pc which suggests that this might be expected.
>>>>>>> 
>>>>>>> Changing `Context>copyTo:` by adding a `self pc` before calling `self copy` leads to no more crashes. Not sure if there is a reason for that or just plain luck.
>>>>>>> 
>>>>>>> A simple reduced stack is below (more details in this issue [1]). The crash happens always with contexts reified as objects (in this case 0x1206b6990 s [] in GtExamplesCommandLineHandler>runPackages). 
>>>>>>> Could this suggest some kind of issue in the vm when reifying contexts, or just some other problem with memory corruption? 
>>>>>>> 
>>>>>>> 
>>>>>>>  0x7ffeefbb4380 M Context(Object)>copy 0x1206b6990: a(n) Context
>>>>>>>     0x7ffeefbb43b8 M Context>copyTo: 0x1206b6990: a(n) Context
>>>>>>>     0x7ffeefbb4400 M Context>copyTo: 0x1206b5ae0: a(n) Context
>>>>>>>   ...
>>>>>>>     0x7ffeefba6078 M Context>copyTo: 0x110548b28: a(n) Context
>>>>>>>     0x7ffeefba60d0 I Context>copyTo: 0x110548a70: a(n) Context
>>>>>>>     0x7ffeefba6118 I MessageNotUnderstood(Exception)>freezeUpTo: 0x110548a20: a(n) MessageNotUnderstood
>>>>>>>     0x7ffeefba6160 I MessageNotUnderstood(Exception)>freeze 0x110548a20: a(n) MessageNotUnderstood
>>>>>>>     0x7ffeefba6190 M [] in GtExampleEvaluator>result 0x110544fb8: a(n) GtExampleEvaluator
>>>>>>>     0x7ffeefba61c8 M BlockClosure>cull: 0x110545188: a(n) BlockClosure
>>>>>>>     0x7ffeefba6208 M Context>evaluateSignal: 0x110548c98: a(n) Context
>>>>>>>     0x7ffeefba6240 M Context>handleSignal: 0x110548c98: a(n) Context
>>>>>>>     0x7ffeefba6278 M Context>handleSignal: 0x110548be0: a(n) Context
>>>>>>>     0x7ffeefba62b0 M MessageNotUnderstood(Exception)>signal 0x110548a20: a(n) MessageNotUnderstood
>>>>>>>     0x7ffeefba62f0 M GtDummyExamplesWithInheritanceSubclassB(Object)>doesNotUnderstand: exampleH 0x1105487d8: a(n) GtDummyExamplesWithInheritanceSubclassB
>>>>>>>     0x7ffeefba6328 M GtExampleEvaluator>primitiveProcessExample:withEvaluationContext: 0x110544fb8: a(n) GtExampleEvaluator
>>>>>>>  ...
>>>>>>>     0x7ffeefbe64d0 M [] in GtExamplesHDReport class(HDReport class)>runPackages: 0x1145e41c8: a(n) GtExamplesHDReport class
>>>>>>>     0x7ffeefbe6520 M [] in Set>collect: 0x1206b5ab0: a(n) Set
>>>>>>>     0x7ffeefbe6568 M Array(SequenceableCollection)>do: 0x1206b5c50: a(n) Array
>>>>>>>        0x1206b5b98 s Set>collect:
>>>>>>>        0x1206b5ae0 s GtExamplesHDReport class(HDReport class)>runPackages:
>>>>>>>        0x1206b6990 s [] in GtExamplesCommandLineHandler>runPackages
>>>>>>>        0x1206b6a48 s BlockClosure>ensure:
>>>>>>>        0x1206b6b68 s UIManager class>nonInteractiveDuring:
>>>>>>>        0x1206b6c48 s GtExamplesCommandLineHandler>runPackages
>>>>>>>        0x1206b6d98 s GtExamplesCommandLineHandler>activate
>>>>>>>        0x1206b75d0 s GtExamplesCommandLineHandler class(CommandLineHandler class)>activateWith:
>>>>>>>        0x1207d2f00 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>>>        0x1207e6620 s BlockClosure>on:do:
>>>>>>>        0x1207f7ab8 s PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
>>>>>>>        0x120809d40 s PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand
>>>>>>>        0x12082ca60 s PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument:
>>>>>>>        0x120789938 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>>>        0x1207a83e0 s BlockClosure>on:do:
>>>>>>>        0x1207b57a0 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
>>>>>>>        0x1207bf830 s [] in BlockClosure>newProcess
>>>>>>> Cheers,
>>>>>>> Andrei
>>>>>>> 
>>>>>>> 
>>>>>>> [1] https://github.com/feenkcom/gtoolkit/issues/1440
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> -- 
>>>>>> _,,,^..^,,,_
>>>>>> best, Eliot
>>>>> 
>>>> 
>>>> 
>>>> -- 
>>>> _,,,^..^,,,_
>>>> best, Eliot
>>> 
>> 
>> 
>> -- 
>> _,,,^..^,,,_
>> best, Eliot
> 
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