[Vm-dev] primitiveFailForOSError: causes assertion failure in the simulator

[Alistair Grant]

Hi Eliot,

On Tue, Oct 23, 2018 at 06:38:41AM +0000, Alistair Grant wrote:
> Hi Eliot,
> 
> Calling #primitiveFailForOSError: fails in the simulator (I guess I'm
> the first person to use it :-)).  It works properly in a real VM, of
> course.

I (think) I take this back.  It looks like the debug VM will crash in
about the same place:


$ ~/vmmaker/opensmalltalk-vm/products/debug/cogspur64linuxht/pharo -gdb Pharo.image

run Pharo.image

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Reading symbols from /home/alistair/vmmaker/opensmalltalk-vm/products/debug/cogspur64linuxht/lib/pharo/5.0-201810160053-FileAttributesPlugin203/pharo...done.
(gdb) run Pharo.image
Starting program: /home/alistair/vmmaker/opensmalltalk-vm/products/debug/cogspur64linuxht/lib/pharo/5.0-201810160053-FileAttributesPlugin203/pharo Pharo.image
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff625f700 (LWP 15319)]

...

Thread 1 "pharo" received signal SIGSEGV, Segmentation fault.
0x000000000047d81e in instSpecOfClass (classPointer=524377) at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:50370
50370		classFormat = ((longAt((classPointer + BaseHeaderSize) + (((sqInt)((usqInt)(InstanceSpecificationIndex) << (shiftForWord())))))) >> 3);
(gdb) where
#0  0x000000000047d81e in instSpecOfClass (classPointer=524377) at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:50370
#1  0x000000000049da8c in getErrorObjectFromPrimFailCode () at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:65422
#2  0x00000000004aa547 in reapAndResetErrorCodeToheader (theSP=0x7fffffff73d0 "\200\215\t\002", methodHeader=275251281) at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:71653
#3  0x0000000000435474 in activateCoggedNewMethod (inInterpreter=0) at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:14171
#4  0x0000000000437422 in ceActivateFailingPrimitiveMethod (aPrimitiveMethod=38699480) at /home/alistair/vmmaker/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:14920
#5  0x0000000000a01656 in ?? ()
#6  0x0000000000000000 in ?? ()
(gdb) call printCallStack()
    0x7fffffff73f0 M File class>primFileAttribute:number: 0x20b6250: a(n) File class
    0x7fffffff7430 M File class>fileAttribute:number: 0x20b6250: a(n) File class
    0x7fffffff7470 M File class>modeOf: 0x20b6250: a(n) File class
    0x7fffffff74b8 M [] in File class>isDirectory: 0x20b6250: a(n) File class
    0x7fffffff74e8 M BlockClosure>on:do: 0x1e41eb0: a(n) BlockClosure
    0x7fffffff7528 M File class>isDirectory: 0x20b6250: a(n) File class
    0x7fffffff7560 M UnixStore(DiskStore)>isDirectory: 0xb909d8: a(n) UnixStore
    0x7fffffff7598 M FileSystem>isDirectory: 0xb5ede8: a(n) FileSystem
    0x7fffffff75d0 M FileReference>isDirectory 0x1e41a98: a(n) FileReference
    0x7fffffff7610 M StartupPreferencesHandler>lookInFolder:forFilesMatching: 0x1e31eb0: a(n) StartupPreferencesHandler
    0x7fffffff7668 I StartupPreferencesHandler>lookInPreferencesVersionFolder 0x1e31eb0: a(n) StartupPreferencesHandler
    0x7fffffff7698 M [] in StartupPreferencesHandler>buildActionList 0x1e31eb0: a(n) StartupPreferencesHandler
    0x7fffffff76d8 M [] in StartupPreferencesHandler>perform 0x1e31eb0: a(n) StartupPreferencesHandler
    0x7fffffff7720 M OrderedCollection>do: 0x1e31ec8: a(n) OrderedCollection
    0x7fffffff7770 I StartupPreferencesHandler>perform 0x1e31eb0: a(n) StartupPreferencesHandler
    0x7ffffffef2b8 I StartupPreferencesLoader>retrieveFilesStream 0x1e31ce0: a(n) StartupPreferencesLoader
    0x7ffffffef2f0 M [] in StartupPreferencesLoader>loadFromDefaultLocations 0x1e31ce0: a(n) StartupPreferencesLoader
    0x7ffffffef320 M BlockClosure>on:do: 0x1e31e70: a(n) BlockClosure
    0x7ffffffef370 I StartupPreferencesLoader>loadFromDefaultLocations 0x1e31ce0: a(n) StartupPreferencesLoader
    0x7ffffffef3a0 M [] in PharoCommandLineHandler>runPreferences 0xb8e980: a(n) PharoCommandLineHandler
    0x7ffffffef3d8 M BlockClosure>cull: 0x1e31cc0: a(n) BlockClosure
    0x7ffffffef418 M SystemDictionary(Dictionary)>at:ifPresent: 0x20c38c0: a(n) SystemDictionary
    0x7ffffffef468 I SmalltalkImage>at:ifPresent: 0x20bc2d8: a(n) SmalltalkImage
    0x7ffffffef4b8 I PharoCommandLineHandler>runPreferences 0xb8e980: a(n) PharoCommandLineHandler
    0x7ffffffef4f8 I PharoCommandLineHandler>activate 0xb8e980: a(n) PharoCommandLineHandler
    0x7ffffffef538 I PharoCommandLineHandler class(CommandLineHandler class)>activateWith: 0x20bd548: a(n) PharoCommandLineHandler class
    0x7ffffffef588 I [] in PharoCommandLineHandler class>activateWith: 0x20bd548: a(n) PharoCommandLineHandler class
    0x7ffffffef5d8 I WorldState>runStepMethodsIn: 0x27ecec8: a(n) WorldState
    0x7ffffffef620 I WorldMorph>runStepMethods 0x27d3658: a(n) WorldMorph
    0x7ffffffef660 I WorldState>doOneCycleNowFor: 0x27ecec8: a(n) WorldState
    0x7ffffffef6a8 I WorldState>doOneCycleFor: 0x27ecec8: a(n) WorldState
    0x7ffffffef6f0 I WorldMorph>doOneCycle 0x27d3658: a(n) WorldMorph
    0x7ffffffef730 I WorldMorph class>doOneCycle 0x27d1e68: a(n) WorldMorph class
    0x7ffffffef770 I [] in MorphicUIManager>spawnNewProcess 0x331d040: a(n) MorphicUIManager
         0x331d128 s [] in BlockClosure>newProcess


Cheers,
Alistair