Hi,

I can report the following:��

The problem with the Buffer overflow remains also with OSProcess.��

Also with the normal vm (https://get.pharo.org��).

Summary: I have buffer overflow crashes with my application on Linux.

The same code runs without problems on MacOS and on Windows.

I have the same test data/database and do exactly the same.

The problem occurs only after calling several times OSProcess/OSSubprocess.

This is the reason why I first had a��suspicion that OSSubprocess is responsible for the crashes.

Can anyone tell me how to proceed to find the reason for the buffer overflow?

There is no PharoDebug.log��

Help is very appreciated!

This is the message when terminating:

root@Pharo_ubuntu_16:/spf/build# ./pharo Pharo-Productive-SPF.image --no-quit

SmalltalkImageInstanceID class>>startUp*** buffer overflow detected ***: /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo terminated

======= Backtrace: =========

/lib/i386-linux-gnu/libc.so.6(+0x67377)[0xf75b9377]

/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x68)[0xf7649708]

/lib/i386-linux-gnu/libc.so.6(+0xf58f8)[0xf76478f8]

/lib/i386-linux-gnu/libc.so.6(+0xf75fa)[0xf76495fa]

/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo(aioEnable+0x31)[0x80c9811]

/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo[0x81215ee]

[0x90010e0]

[0x90ad2d0]

[0x90db8b4]

[0x90ad24a]

[0x900be6b]

[0x900b04d]

[0x9007a3e]

[0x9004247]

[0x9004572]

[0x9001020]

[0xa98c524]

[0xb1755db]

[0x9003efc]

[0x9001020]

[0xdcb558c]

[0xb0d4d95]

[0x9000ff0]

======= Memory map: ========

08048000-08164000 r-xp 00000000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo

08164000-08165000 r--p 0011b000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo

08165000-08170000 rw-p 0011c000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo

08170000-081a7000 rw-p 00000000 00:00 0��

08fdd000-08ffe000 rw-p 00000000 00:00 0�� [heap]

09000000-09100000 rwxp 00000000 00:00 0��

09100000-11200000 rw-p 00000000 00:00 0��

f552e000-f554a000 r-xp 00000000 00:1b 8244 �� /lib/i386-linux-gnu/libgcc_s.so.1

f554a000-f554b000 rw-p 0001b000 00:1b 8244 �� /lib/i386-linux-gnu/libgcc_s.so.1

f554b000-f684c000 rw-p 00000000 00:00 0��

f684c000-f684f000 r-xp 00000000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so

f684f000-f6850000 r--p 00002000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so

f6850000-f6851000 rw-p 00003000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so

f6851000-f68b2000 r-xp 00000000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0

f68b2000-f68b3000 ---p 00061000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0

f68b3000-f68b5000 r--p 00061000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0

f68b5000-f68b9000 rw-p 00063000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0

f68b9000-f6a7b000 r-xp 00000000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0

f6a7b000-f6a7c000 ---p 001c2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0

f6a7c000-f6a8c000 r--p 001c2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0

f6a8c000-f6a93000 rw-p 001d2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0

f6a93000-f6a96000 rw-p 00000000 00:00 0��

f6a96000-f6a9b000 r-xp 00000000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so

f6a9b000-f6a9c000 r--p 00004000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so

f6a9c000-f6a9d000 rw-p 00005000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so

f6a9d000-f6ab1000 r-xp 00000000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so

f6ab1000-f6ab2000 ---p 00014000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so

f6ab2000-f6ab3000 r--p 00014000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so

f6ab3000-f6ab4000 rw-p 00015000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so

f6ab4000-f6ab6000 rw-p 00000000 00:00 0��

f6ab6000-f6abb000 r-xp 00000000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so

f6abb000-f6abc000 r--p 00004000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so

f6abc000-f6abd000 rw-p 00005000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so

f6abd000-f6c05000 rw-p 00000000 00:00 0��

f6c05000-f6c2e000 r-xp 00000000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0

f6c2e000-f6c2f000 r--p 00028000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0

f6c2f000-f6c30000 rw-p 00029000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0

f6c30000-f6c49000 r-xp 00000000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8

f6c49000-f6c4a000 r--p 00018000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8

f6c4a000-f6c4b000 rw-p 00019000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8

f6c4b000-f6cf6000 r-xp 00000000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1

f6cf6000-f6cfa000 r--p 000aa000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1

f6cfa000-f6cfb000 rw-p 000ae000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1

f6cfb000-f6d02000 r-xp 00000000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so

f6d02000-f6d03000 r--p 00006000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so

f6d03000-f6d04000 rw-p 00007000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so

f6d04000-f6d0f000 r-xp 00000000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so

f6d0f000-f6d10000 r--p 0000a000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so

f6d10000-f6d11000 rw-p 0000b000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so

f6d11000-f6d38000 rw-p 00000000 00:00 0��

f6d38000-f6d39000 ---p 00000000 00:00 0��

f6d39000-f7539000 rw-p 00000000 00:00 0�� [stack:21188]

f7539000-f753b000 r-xp 00000000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so

f753b000-f753c000 r--p 00001000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so

f753c000-f753d000 rw-p 00002000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so

f753d000-f7544000 r--s 00000000 00:1b 7977 �� /usr/lib/i386-linux-gnu/gconv/gconv-modules.cache

f7544000-f754a000 r-xp 00000000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so

f754a000-f754b000 r--p 00005000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so

f754b000-f754c000 rw-p 00006000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so

f754c000-f754e000 r-xp 00000000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so

f754e000-f754f000 r--p 00001000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so

f754f000-f7550000 rw-p 00002000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so

f7550000-f7552000 rw-p 00000000 00:00 0��

f7552000-f7702000 r-xp 00000000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so

f7702000-f7704000 r--p 001af000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so

f7704000-f7705000 rw-p 001b1000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so

f7705000-f7708000 rw-p 00000000 00:00 0��

f7708000-f775b000 r-xp 00000000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so

f775b000-f775c000 r--p 00052000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so

f775c000-f775d000 rw-p 00053000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so

f775d000-f7776000 r-xp 00000000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so

f7776000-f7777000 r--p 00018000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so

f7777000-f7778000 rw-p 00019000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so

f7778000-f777a000 rw-p 00000000 00:00 0��

f777a000-f777d000 r-xp 00000000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so

f777d000-f777e000 r--p 00002000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so

f777e000-f777f000 rw-p 00003000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so

f777f000-f7780000 rw-p 00000000 00:00 0��

f7780000-f7781000 r-xp 00000000 00:00 0�� [vdso]

f7781000-f77a4000 r-xp 00000000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so

f77a4000-f77a5000 r--p 00022000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so

f77a5000-f77a6000 rw-p 00023000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so

ffc55000-ffcd1000 rw-p 00000000 00:00 0�� [stack]

./pharo: line 11: 14639 Aborted �� "$DIR"/"pharo-vm/pharo" --nodisplay "$@"

2018-03-05 17:38 GMT+01:00 Sabine Manaa <manaa.sabine@gmail.com>:

Hi Mariano and Thierry,

I load on Pharo 32 bit with:

��spec
baseline: 'OSSubprocess'
with: [ spec
className: 'BaselineOfOSSubprocess';
repository: 'github://marianopeck/OSSubprocess:v0.2.5/repository' ];
import: 'OSSubprocess'��

Tomorrow I will try to load on Pharo7 and try to use OSProcess and see if it still crashes.

Sabine

2018-03-05 17:23 GMT+01:00 Mariano Martinez Peck <marianopeck@gmail.com>:
Hi Sabine,

Which OSSubprocess version are you using? If are using ConfigurationOf to load it, then please tell me which version from there.
If you are using from baseline, tell me if you are grabbing master, a given tag , a given commit, etc.��
I will assume it is Pharo 32 bits rigth?

I will continue with a more detailed answer once you get back to me with above questions.

Cheers,

On Mon, Mar 5, 2018 at 1:14 PM, Sabine Manaa <manaa.sabine@gmail.com> wrote:
Hi Alistair,��

thank you! The message (pthread_setschedparam failed: Operation not permitted) ��is gone now. So Question 1 is solved.

But the crashes (Question 2) are remaining. After calling several OSSubprocess commands, Pharo crashes without PharoDebug.log.

Anyone having an Idea what I could do?

Sabine

��

2018-03-05 13:07 GMT+01:00 Alistair Grant <akgrant0710@gmail.com>:
Hi Sabine,

The docket container will need to be privileged to adjust thread priority.

Cheers,
Alistair
(on phone)

On 5 Mar. 2018 12:44, "Sabine Manaa" <manaa.sabine@gmail.com> wrote:
We want to run Pharo6 with Ubuntu 16.04 Linux (in a Docker Image) and use
OSSubprocess.

For this, we use this vm: https://get.pharo.org/61+vmT

[1] tells me: "If you are installing under Linux, then you must use a
threaded heartbeat VM"

We also created a file /etc/security/limits.d/pharo.conf and put the
parameters in like described in the message [2] when startup. Also we log
out and in.

Question 1: the message (pthread_setschedparam failed: Operation not
permitted) comes again to the console each time we use OSSubprocess. As far
as I understand, it should disappear. Does this mean, that we did not edit
the pharo.conf correctly?

Question 2: after several uses of OSSubprocess within our application, Pharo
crashes (no PharoDebug.log) with the following messages [3].
How can we avoid this, what are we doing wrong?

Question 3: sometimes (!) when we load (exactly the same code loaded with a
script), we also get a crash, see [4]. Bug? wrong vm?

I am unhappy with this and it takes a lot of time. What are we doing wrong?
We want to run Pharo6 with OSSubprocess in Linux within a docker image for
our staging environment.

Help very welcome :-)
Sabine

[1]https://github.com/marianopeck/OSSubprocess
[2](https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/tag/r3732#linux)

[3]crash message
��*** buffer overflow detected ***:
/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo terminated
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x67377)[0xf75f3377]
/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x68)[0xf7683708]
/lib/i386-linux-gnu/libc.so.6(+0xf58f8)[0xf76818f8]
/lib/i386-linux-gnu/libc.so.6(+0xf75fa)[0xf76835fa]
/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo(aioEnable+0x31)[0x80c9811]
/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo[0x81215ee]
[0xa1010e0]
[0xa1c2bb8]
[0xa15f50c]
....a lot more

[4] PharoDebug.log
HERE_BE_DRAGONS_HERE
KeyNotFound: key #arg1 not found in Dictionary
5 March 2018 11:31:51.792142 am

VM: unix - i686 - linux-gnu - CoInterpreter VMMaker.oscog-eem.2254 uuid:
4f2c2cce-f4a2-469a-93f1-97ed941df0ad Jul 20 2017
StackToRegisterMappingCogit VMMaker.oscog-eem.2252 uuid:
2f3e9b0e-ecd3-4adf-b092-cce2e2587a5c Jul 20 2017
VM: 201707201942 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $
Date: Thu Jul 20 12:42:21 2017 -0700 $ Plugins: 201707201942
https://github.com/OpenSmalltalk/opensmalltalk-vm.git $

Image: Pharo6.0 [Latest update: #60536]

Dictionary>>errorKeyNotFound:
�� Receiver: a Dictionary(#arg3->1 #tmp2->2 )
�� Arguments and temporary variables:
�� aKey:�� #arg1
�� Receiver's instance variables:
�� tally:�� 2
�� array:�� {nil. nil. #arg3->1. #tmp2->2. nil}

[ self errorKeyNotFound: key ] in Dictionary>>at:
�� Receiver: a Dictionary(#arg3->1 #tmp2->2 )
�� Arguments and temporary variables:
�� key:�� #arg1
�� Receiver's instance variables:
�� tally:�� 2
�� array:�� {nil. nil. #arg3->1. #tmp2->2. nil}

Dictionary>>at:ifAbsent:
�� Receiver: a Dictionary(#arg3->1 #tmp2->2 )
�� Arguments and temporary variables:
�� arg1:�� #arg1
�� arg2:�� [ self errorKeyNotFound: key ]
�� tmp1:�� nil
�� Receiver's instance variables:
�� tally:�� 2
�� array:�� {nil. nil. #arg3->1. #tmp2->2. nil}

Dictionary>>at:
�� Receiver: a Dictionary(#arg3->1 #tmp2->2 )
�� Arguments and temporary variables:
�� key:�� #arg1
�� Receiver's instance variables:
�� tally:�� 2
�� array:�� {nil. nil. #arg3->1. #tmp2->2. nil}

IRPushClosureCopy>>indexForVarNamed:
�� Receiver: pushClosureCopyCopiedValues: #() args: #(#arg3)
�� Arguments and temporary variables:
�� aName:�� #arg1
�� Receiver's instance variables:
�� sourceNode:�� RBBlockNode([ :arg3 |
| tmp2 |
tmp2 := arg3.
tmp2
�� nextPutAll: arg...etc...
�� bytecodeIndex:�� nil
�� sequence:�� an IRSequence (1)
�� destination:�� an IRSequence (3)
�� successor:�� nil
�� numArgs:�� nil
�� blockSequence:�� an IRSequence (2)
�� tempMap:�� a Dictionary(#arg3->1 #tmp2->2 )
�� copiedValues:�� #()
�� lastBlockSequence:�� an IRSequence (2)
�� arguments:�� #(#arg3)

IRTranslatorV2>>visitPushTemp:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� tmp:�� pushTemp: #arg1
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRPushTemp>>accept:
�� Receiver: pushTemp: #arg1
�� Arguments and temporary variables:
�� aVisitor:�� an IRTranslatorV2
�� Receiver's instance variables:
�� sourceNode:�� RBArgumentNode(arg1)
�� bytecodeIndex:�� nil
�� sequence:�� an IRSequence (2)
�� name:�� #arg1

IRTranslatorV2(IRVisitor)>>visitNode:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� elem:�� pushTemp: #arg1
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRTranslatorV2>>visitInstruction:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� instr:�� pushTemp: #arg1
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

[ :arg2 | self visitInstruction: arg2 ] in
IRTranslatorV2(IRVisitor)>>visitSequence:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� arg1:�� an IRSequence (2)
�� arg2:�� pushTemp: #arg1
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

OrderedCollection>>do:
�� Receiver: an OrderedCollection(pushTemp: #arg3 popIntoTemp: #tmp2 pushTemp:
#tmp2 pushDup pushTemp: ...etc...
�� Arguments and temporary variables:
<<error during printing>
�� Receiver's instance variables:
�� array:�� an Array(pushTemp: #arg3 popIntoTemp: #tmp2 pushTemp: #tmp2
pushDup push...etc...
�� firstIndex:�� 1
�� lastIndex:�� 25

IRSequence>>do:
�� Receiver: an IRSequence (2)
�� Arguments and temporary variables:
�� aBlock:�� [ :arg2 | self visitInstruction: arg2 ]
�� Receiver's instance variables:
�� sequence:�� an OrderedCollection(pushTemp: #arg3 popIntoTemp: #tmp2
pushTemp: #tm...etc...
�� orderNumber:�� 2
�� method:�� an IRMethod

IRTranslatorV2(IRVisitor)>>visitSequence:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� arg1:�� an IRSequence (2)
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRTranslatorV2>>visitSequence:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� instructionSequence:�� an IRSequence (2)
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRSequence>>accept:
�� Receiver: an IRSequence (2)
�� Arguments and temporary variables:
�� aVisitor:�� an IRTranslatorV2
�� Receiver's instance variables:
�� sequence:�� an OrderedCollection(pushTemp: #arg3 popIntoTemp: #tmp2
pushTemp: #tm...etc...
�� orderNumber:�� 2
�� method:�� an IRMethod

IRTranslatorV2(IRVisitor)>>visitNode:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� elem:�� an IRSequence (2)
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

[ :arg2 | self visitNode: arg2 ] in IRTranslatorV2(IRVisitor)>>visitNodes:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� arg1:�� a SortedCollection(an IRSequence (1) an IRSequence (2) an
IRSequence (3) ...etc...
�� arg2:�� an IRSequence (2)
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

SortedCollection(OrderedCollection)>>do:
�� Receiver: a SortedCollection(an IRSequence (1) an IRSequence (2) an
IRSequence (3) an IRSequence (4)...etc...
�� Arguments and temporary variables:
<<error during printing>
�� Receiver's instance variables:
�� array:�� an Array(an IRSequence (1) an IRSequence (2) an IRSequence (3) an
IRSequ...etc...
�� firstIndex:�� 1
�� lastIndex:�� 7
�� sortBlock:�� [ :arg2 :arg3 | arg2 orderNumber <= arg3 orderNumber ]

IRTranslatorV2(IRVisitor)>>visitNodes:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� arg1:�� a SortedCollection(an IRSequence (1) an IRSequence (2) an
IRSequence (3) ...etc...
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRTranslatorV2>>visitSequences:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� arg1:�� a SortedCollection(an IRSequence (1) an IRSequence (2) an
IRSequence (3) ...etc...
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRTranslatorV2>>visitMethod:
�� Receiver: an IRTranslatorV2
�� Arguments and temporary variables:
�� anIr:�� an IRMethod
�� Receiver's instance variables:
�� gen:�� an IRBytecodeGenerator
�� currentScope:�� a Stack(pushClosureCopyCopiedValues: #() args: #(#arg3) an
IRMeth...etc...
�� trailer:�� a CompiledMethodTrailer
�� tempVectorStack:�� a Stack()
�� compilationContext:�� a CompilationContext

IRMethod>>accept:
�� Receiver: an IRMethod
�� Arguments and temporary variables:
�� aVisitor:�� an IRTranslatorV2
�� Receiver's instance variables:
�� sourceNode:�� logError: arg1 inContext: arg2
�� self
�� logStdErrorDuring: [ :arg3 |...etc...
�� startSequence:�� an IRSequence (1)
�� numArgs:�� 2
�� properties:�� nil
�� tempMap:�� a Dictionary(#arg1->1 #arg2->2 )
�� pragmas:�� an OrderedCollection()
�� additionalLiterals:�� an OCLiteralSet(#ifNotNil:)
�� compiledMethod:�� nil
�� compilationContext:�� a CompilationContext
�� irPrimitive:�� primitive 0

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Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html

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Mariano
http://marianopeck.wordpress.com