[Vm-dev] Cog Crash in allocateOpcodesbytecodes

Mariano Martinez Peck marianopeck at gmail.com
Thu Apr 26 20:42:00 UTC 2012

Hi Eliot. We are doing a crazy experiment where we serialize almost all
PharoCore and we materialize it in a PharoKernel image. During the
initialization (after the load), there is one line that crashes Cog:

PolymorphSystemSettings showDesktopLogo: true.

For what I can see, I may be related to the fact that #pharoLogoContents is
too long or something like that?
the same experiment with StackVM works fine.
Of course in a normal image (without this experiment) I can do
PolymorphSystemSettings showDesktopLogo: true. without problems.

>From gdb i see:

(gdb) bt
#0  0x0000a190 in compileCogMethod (selector=528828260) at
#1  0x00009088 in cogselector (aMethodObj=531503072,
aSelectorOop=528828260) at
#2  0x0003268b in ceSendsupertonumArgs (selector=528828260,
superNormalBar=0, rcvr=536158520, numArgs=0) at
#3  0x1f40006c in ?? ()
#4  0x00067350 in threadSchedulingLoop (vmThread=0x1030c00) at
#5  0x0003d2cb in initialEnterSmalltalkExecutive () at
#6  0x0003df8f in initStackPagesAndInterpret () at
#7  0x00022618 in interpret () at
#8  0x0006dc60 in -[sqSqueakMainApplication runSqueak] (self=0x1d0ca60,
_cmd=0x124ebf) at
#9  0x93ad586c in __NSFirePerformWithOrder ()
#10 0x908b8dd2 in __CFRunLoopDoObservers ()
#11 0x90874ced in __CFRunLoopRun ()
#12 0x908743c4 in CFRunLoopRunSpecific ()
#13 0x908741f1 in CFRunLoopRunInMode ()
#14 0x97760e04 in RunCurrentEventLoopInMode ()
#15 0x97760af5 in ReceiveNextEventCommon ()
#16 0x97760a3e in BlockUntilNextEventMatchingListInMode ()
#17 0x96d1a595 in _DPSNextEvent ()
#18 0x96d19dd6 in -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#19 0x96cdc1f3 in -[NSApplication run] ()
#20 0x96cd4289 in NSApplicationMain ()
#21 0x0006b9f9 in main (argc=1, argv=0xbffff688, envp=0xbffff690) at

And the line that fails is:     allocateOpcodesbytecodes((numBytecodes +
extra) * 10, numBytecodes);

numBytecodes is 49729 and extra is 10.

Any idea?


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