[Vm-dev] OSProcess fork issue with Debian built VM

Max Leske maxleske at gmail.com
Tue May 16 12:57:03 UTC 2017 

Hi,

We're building the pharo.cog.spur VM on Debian (32 bits, itimer, on 64 with compat libs). Unfortunately, we're running into one particular problem with OSProcess. Some primitives like primitiveFileStat work but forking a child process (e.g. with #waitForCommand) produces a segfault. We've tried to find a difference between our build and the VM downloaded from bintray but we weren't very successful. One difference we do see is that our libc6 version is 2.19, while the one used in the travis build is 2.15 (although both binaries use the 2.19 version at runtime).

I'm aware that OSProcess hasn't been tagged as officially ready for Pharo 6 (which is where I'm using it). However, all of my tests with the prebuilt VM's have been successful.

Do any of you have an idea as to what the problem could be? I've attached the stack trace below. One possibly interesting thing is that the stack trace is being printed in an infinite loop, i.e. the process isn't killed but the VM just keeps printing out the same trace.

Cheers,
Max



could not open "[redacted]/crash.dmp" for writing.

Segmentation fault Tue May 16 14:52:22 2017


/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo
Pharo VM version: 5.0-$URL$  Tue May 16 12:22:16 UTC 2017 gcc 4.9.2 [Production Spur ITHB VM]
Built from: CoInterpreter VMMaker.oscog-eem.2207 uuid: 8da5de9b-33d7-478b-9081-58591f7da69a May 16 2017
With: StackToRegisterMappingCogit VMMaker.oscog-eem.2208 uuid: 4877be7d-941d-4e15-b6df-4f1b8c7072a8 May 16 2017
Revision: VM: $URL$ $Date$ Date: $Rev$ Plugins:  $Rev$
Build host: Linux nuc 4.10.0-20-generic #22-Ubuntu SMP Thu Apr 20 09:22:42 UTC 2017 i686 GNU/Linux
plugin path: /usr/local/lib/phcogspurlinux/lib/pharo/5.0-/ [default: /usr/local/lib/phcogspurlinux/lib/pharo/5.0-/]


C stack backtrace & registers:
	eax 0xffb43924 ebx 0xffb43840 ecx 0xffb438d8 edx 0xffb4388c
	edi 0xffb43710 esi 0xffb43710 ebp 0xffb437a8 esp 0xffb437f4
	eip 0xffb43a08
*[0xffb43a08]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805dc40]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f52d]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x805f556]
linux-gate.so.1(__kernel_rt_sigreturn+0x0)[0xf7745d40]
/lib/i386-linux-gnu/i686/cmov/libc.so.6(abort+0x223)[0xf752db03]
/usr/local/lib/phcogspurlinux/lib/pharo/5.0-/pharo[0x81399a0]


Smalltalk stack dump:
0xffd15d1c I UnixOSProcessAccessor>forkAndExec:stdIn:stdOut:stdErr:argBuf:argOffsets:envBuf:envOffsets:workingDir: 0xe39e3b8: a(n) UnixOSProcessAccessor
0xffd15d98 I UnixProcess>processProxy:forkAndExec:arguments:environment:descriptors: 0xcdd1fd8: a(n) UnixProcess
0xffd15dcc I ExternalUnixOSProcess>forkChild 0x9b79318: a(n) ExternalUnixOSProcess
0xffd15df0 I ExternalUnixOSProcess class>forkAndExec:arguments:environment:descriptors: 0xcd70c30: a(n) ExternalUnixOSProcess class
0xffd15e20 I UnixProcess>forkAndExec:arguments:environment:descriptors: 0xcdd1fd8: a(n) UnixProcess
0xffd15e50 I UnixProcess>forkJob:arguments:environment:descriptors: 0xcdd1fd8: a(n) UnixProcess
0xffd14c10 I UnixProcess>waitForCommand: 0xcdd1fd8: a(n) UnixProcess
0xffd14c2c M UndefinedObject>DoIt 0x9cc4c70: a(n) UndefinedObject
0xffd14c5c I OpalCompiler>evaluate 0x9b5efa8: a(n) OpalCompiler
0xffd14c7c I OpalCompiler(AbstractCompiler)>evaluate: 0x9b5efa8: a(n) OpalCompiler
0xffd14ca0 M [] in EvaluateCommandLineHandler>evaluate: 0x9b5e308: a(n) EvaluateCommandLineHandler
0xffd14cb8 M BlockClosure>on:do: 0x9b5ef70: a(n) BlockClosure
0xffd14ce4 I EvaluateCommandLineHandler>evaluate: 0x9b5e308: a(n) EvaluateCommandLineHandler
0xffd14d0c I EvaluateCommandLineHandler>evaluateArguments 0x9b5e308: a(n) EvaluateCommandLineHandler
0xffd14d2c I EvaluateCommandLineHandler>activate 0x9b5e308: a(n) EvaluateCommandLineHandler
0xffd14d4c I EvaluateCommandLineHandler class(CommandLineHandler class)>activateWith: 0xa1fd638: a(n) EvaluateCommandLineHandler class
0xffd14d6c M [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand: 0xe694a28: a(n) PharoCommandLineHandler
0xffd14d84 M BlockClosure>on:do: 0x9b5e2d8: a(n) BlockClosure
0xffd14da4 M PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand: 0xe694a28: a(n) PharoCommandLineHandler
0xffd14dcc I PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand 0xe694a28: a(n) PharoCommandLineHandler
0xffd14dec I PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument: 0xe694a28: a(n) PharoCommandLineHandler
0xffd14e08 M [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate 0xe694a28: a(n) PharoCommandLineHandler
0xffd14e20 M BlockClosure>on:do: 0x9b5caf8: a(n) BlockClosure
0xffd14e40 M PharoCommandLineHandler(BasicCommandLineHandler)>activate 0xe694a28: a(n) PharoCommandLineHandler
0xffd14e60 I PharoCommandLineHandler>activate 0xe694a28: a(n) PharoCommandLineHandler
0xffd0bc1c I PharoCommandLineHandler class(CommandLineHandler class)>activateWith: 0xa07e658: a(n) PharoCommandLineHandler class
0xffd0bc44 I [] in PharoCommandLineHandler class>activateWith: 0xa07e658: a(n) PharoCommandLineHandler class
0xffd0bc64 I NonInteractiveUIManager(UIManager)>defer: 0xe61f510: a(n) NonInteractiveUIManager
0xffd0bc88 I PharoCommandLineHandler class>activateWith: 0xa07e658: a(n) PharoCommandLineHandler class
0xffd0bca8 M [] in BasicCommandLineHandler>activateSubCommand: 0xe694080: a(n) BasicCommandLineHandler
0xffd0bcc0 M BlockClosure>on:do: 0xe694098: a(n) BlockClosure
0xffd0bce8 I BasicCommandLineHandler>activateSubCommand: 0xe694080: a(n) BasicCommandLineHandler
0xffd0bd10 I BasicCommandLineHandler>handleSubcommand 0xe694080: a(n) BasicCommandLineHandler
0xffd0bd30 I BasicCommandLineHandler>handleArgument: 0xe694080: a(n) BasicCommandLineHandler
0xffd0bd4c M [] in BasicCommandLineHandler>activate 0xe694080: a(n) BasicCommandLineHandler
0xffd0bd64 M BlockClosure>on:do: 0xe694210: a(n) BlockClosure
0xffd0bd8c I BasicCommandLineHandler>activate 0xe694080: a(n) BasicCommandLineHandler
0xffd0bda4 M [] in BasicCommandLineHandler class>startUp: 0xa07e5e8: a(n) BasicCommandLineHandler class
0xffd0bdbc M BlockClosure>cull: 0xe6942a0: a(n) BlockClosure
0xffd0bde4 I WorkingSession>executeDeferredStartupActions: 0xe61e630: a(n) WorkingSession
0xffd0be08 I WorkingSession>runStartup: 0xe61e630: a(n) WorkingSession
0xffd0be2c I WorkingSession>start: 0xe61e630: a(n) WorkingSession
0xffd0be58 I SessionManager>snapshot:andQuit: 0xb904f38: a(n) SessionManager
 0xe39f508 s [] in SmalltalkImage>snapshot:andQuit:
 0xe3a08b8 s CurrentExecutionEnvironment class>activate:for:
 0xe3a1010 s DefaultExecutionEnvironment(ExecutionEnvironment)>beActiveDuring:
 0xe3a1810 s DefaultExecutionEnvironment class>beActiveDuring:
 0xe3a1070 s SmalltalkImage>snapshot:andQuit:
 0xe3a1870 s EvaluateCommandLineHandler>activate
 0xe3a1b78 s EvaluateCommandLineHandler class(CommandLineHandler class)>activateWith:
 0xe3a1e20 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
 0xe3a1fd0 s BlockClosure>on:do:
 0xe3a2120 s PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
 0xe3a3260 s PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand
 0xe3a34e8 s PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument:
 0xe3a36e0 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
 0xe3a3960 s BlockClosure>on:do:
 0xe3a3b38 s PharoCommandLineHandler(BasicCommandLineHandler)>activate
 0xe3a3cd0 s PharoCommandLineHandler>activate
 0xe3a3d30 s PharoCommandLineHandler class(CommandLineHandler class)>activateWith:
 0xe3a3d90 s [] in PharoCommandLineHandler class>activateWith:
 0xe3a3df0 s NonInteractiveUIManager(UIManager)>defer:
 0xe3a3e68 s PharoCommandLineHandler class>activateWith:
 0xe3a3ed8 s [] in BasicCommandLineHandler>activateSubCommand:
 0xe3a3f38 s BlockClosure>on:do:
 0xe3a3fc8 s BasicCommandLineHandler>activateSubCommand:
 0xe3a4080 s BasicCommandLineHandler>handleSubcommand
 0xe3a4100 s BasicCommandLineHandler>handleArgument:
 0xe3a4198 s [] in BasicCommandLineHandler>activate
 0xe3a42f8 s BlockClosure>on:do:
 0xe3a44d0 s BasicCommandLineHandler>activate
 0xe3a4668 s [] in BasicCommandLineHandler class>startUp:
 0xe3a46c8 s BlockClosure>cull:
 0xe3a4740 s WorkingSession>executeDeferredStartupActions:
 0xe3a4800 s WorkingSession>runStartup:
 0xe3a4860 s WorkingSession>start:
 0xe36abe8 s SessionManager>snapshot:andQuit:
 0xe36ac58 s [] in SmalltalkImage>snapshot:andQuit:
 0xe36acb8 s CurrentExecutionEnvironment class>activate:for:
 0xe36ad18 s DefaultExecutionEnvironment(ExecutionEnvironment)>beActiveDuring:
 0xe36ad78 s DefaultExecutionEnvironment class>beActiveDuring:
 0xe36ab78 s SmalltalkImage>snapshot:andQuit:
 0xbe92200 s EvaluateCommandLineHandler>activate
 0xbe94118 s EvaluateCommandLineHandler class(CommandLineHandler class)>activateWith:
 0xbe94768 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
 0xbe94948 s BlockClosure>on:do:
 0xbe94b78 s PharoCommandLineHandler(BasicCommandLineHandler)>activateSubCommand:
 0xbe94c20 s PharoCommandLineHandler(BasicCommandLineHandler)>handleSubcommand
 0xbe94e18 s PharoCommandLineHandler(BasicCommandLineHandler)>handleArgument:
 0xbe94eb8 s [] in PharoCommandLineHandler(BasicCommandLineHandler)>activate
 0xbe95000 s BlockClosure>on:do:
 0xbe95078 s PharoCommandLineHandler(BasicCommandLineHandler)>activate
 0xbe72248 s PharoCommandLineHandler>activate
 0xbe71e50 s PharoCommandLineHandler class(CommandLineHandler class)>activateWith:
 0xbe72c10 s [] in PharoCommandLineHandler class>activateWith:
 0xbe73468 s NonInteractiveUIManager(UIManager)>defer:
 0xbe71ed8 s PharoCommandLineHandler class>activateWith:
 0xbe72c70 s [] in BasicCommandLineHandler>activateSubCommand:
 0xbe734c8 s BlockClosure>on:do:
 0xbe71f80 s BasicCommandLineHandler>activateSubCommand:
 0xbe71ff8 s BasicCommandLineHandler>handleSubcommand
 0xbe72cd0 s BasicCommandLineHandler>handleArgument:
 0xbe72068 s [] in BasicCommandLineHandler>activate
 0xbe72d30 s BlockClosure>on:do:
 0xbe720f8 s BasicCommandLineHandler>activate
 0xbe72d90 s [] in BasicCommandLineHandler class>startUp:
 0xbe73528 s BlockClosure>cull:
 0xbe74378 s WorkingSession>executeDeferredStartupActions:
 0xbe72170 s WorkingSession>runStartup:
 0xbe721d0 s WorkingSession>start:
 0xbe6fd78 s SessionManager>snapshot:andQuit:
 0xbe6fdf8 s [] in SmalltalkImage>snapshot:andQuit:
 0xbe6fe58 s CurrentExecutionEnvironment class>activate:for:
 0xbe6fed8 s DefaultExecutionEnvironment(ExecutionEnvironment)>beActiveDuring:
 0xbe6ff98 s DefaultExecutionEnvironment class>beActiveDuring:
 0xbe6ff38 s SmalltalkImage>snapshot:andQuit:
 0xbe6fff8 s [] in UndefinedObject>DoIt
 0xbe70058 s [] in BlockClosure>newProcess

Most recent primitives
at:put:
size
at:
at:put:
size
at:
at:put:
size
at:
at:put:
size
at:
at:put:
size
at:
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size
at:
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size
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size
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size
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size
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size
at:
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size
at:
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size
at:
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size
at:
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at:put:
-
-
-
-
at:put:
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at:put:
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at:put:
at:put:
at:put:
at:put:
at:put:
at:put:
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at:put:
at:put:
at:put:
at:put:
at:put:
at:put:
at:put:
at:put:
at:put:
replaceFrom:to:with:startingAt:
at:put:
at:put:
at:put:
at:put:
at:put:
objectAt:put:
objectAt:put:
objectAt:put:
objectAt:put:
objectAt:put:
objectAt:put:
species
value:
bitAnd:
**PrimitiveFailure**
bitAnd:
**PrimitiveFailure**
bitOr:
**PrimitiveFailure**
bitOr:
**PrimitiveFailure**
bitClear:
class
class
objectAt:put:
stringHash:initialHash:
objectAt:put:
withArgs:executeMethod:
basicNew
basicNew
**StackOverflow**
stringHash:initialHash:
perform:
size
class
basicNew
quo:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
compare:with:collated:
compare:with:collated:
basicNew:
basicNew
imageFile
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
replaceFrom:to:with:startingAt:
translate:from:to:table:
basicIdentityHash
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
basicNew
replaceFrom:to:with:startingAt:
basicNew
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
indexOfAscii:inString:startingAt:
replaceFrom:to:with:startingAt:
compare:with:collated:
size
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
replaceFrom:to:with:startingAt:
translate:from:to:table:
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
findFirstInString:inSet:startingAt:
replaceFrom:to:with:startingAt:
class
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
replaceFrom:to:with:startingAt:
translate:from:to:table:
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
stringHash:initialHash:
replaceFrom:to:with:startingAt:
translate:from:to:table:
compare:with:collated:
findFirstInString:inSet:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
lookupDirectory:filename:
basicNew
**StackOverflow**
basicIdentityHash
value
primGetCurrentWorkingDirectory
new:
at:put:
at:put:
at:put:
value:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
value:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
primSizeOfPointer
value:
collect:
value:value:
inject:into:
primSizeOfPointer
timesRepeat:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
replaceFrom:to:with:startingAt:
new:
collect:
inject:into:
replaceFrom:to:with:startingAt:
at:
at:
at:
at:
at:
at:
at:
at:
primGetCurrentWorkingDirectory
compare:with:collated:
primForkExec:stdIn:stdOut:stdErr:argBuf:argOffsets:envBuf:envOffsets:workingDir:

stack page bytes 4096 available headroom 2788 minimum unused headroom 3004

	(Segmentation fault)
output file stack is empty.

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