May 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Strangest object ever seen?

by Francisco Garau

I've seen a similar object in the first pharo 2.0 image I have downloaded. It was in an Unamed ChangSet (right at the bottom of the list) Cannot check right now... - Francisco On 9 May 2012, at 14:13, Herby VojÄÃk <herby(a)mailbox.sk> wrote: > > > Herby VojÄÃk wrote: >> >> >> Pavel Krivanek wrote: >>> On Wed, May 9, 2012 at 2:38 PM, Herby VojÄÃk<herby(a)mailbox.sk> wrote: >>>> >>>> Pavel Krivanek wrote: >>>>> Some next interesting information: >>>>> >>>>> o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject >>>>> class]) instVarNamed: #thisClass). 1. >>>>> >>>>> Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> an >>>>> OrderedCollection(Behavior Class ClassDescription Object ProtoObject) >>>>> >>>>> Smalltalk allClasses select: [:c | o class == c] -> an >>>>> OrderedCollection() "WTF" >>>> >>>> My gut feeling says 'o class == o' here. >>>> Also it may be interesting to see what is o class class. >>>> (o class is not inspectable, is it?) >>> >>> As I see there is a circle but different one: >>> >>> dzindzik := (Metaclass allInstances detect: [:c | c superclass = >>> ProtoObject class]). 1. >>> o := dzindzik instVarNamed: #thisClass. 1. >>> o class == dzindzik -> true > > It seems there is a problem with inst var indexes... just look at o name (it's printable, only it's a dictionary with dependent fields), something you would not wait from AClass name. > > Herby > > P.S.: dzindzik name and dzindzik methodDict are inspectable... method dict is normal, but name is again something strange... >

May 9, 2012

Re: [Pharo-project] A comparative article (was Re: [squeak-dev] [ANN] STON - Smalltalk Object Notation)

by StÃ©phane Ducasse

I will read your article I missed it originally and after I was running to catch my train.

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Herby VojÄÃk

Herby VojÄÃk wrote: > > > Pavel Krivanek wrote: >> On Wed, May 9, 2012 at 2:38 PM, Herby VojÄÃk<herby(a)mailbox.sk> wrote: >>> >>> Pavel Krivanek wrote: >>>> Some next interesting information: >>>> >>>> o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject >>>> class]) instVarNamed: #thisClass). 1. >>>> >>>> Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> an >>>> OrderedCollection(Behavior Class ClassDescription Object ProtoObject) >>>> >>>> Smalltalk allClasses select: [:c | o class == c] -> an >>>> OrderedCollection() "WTF" >>> >>> My gut feeling says 'o class == o' here. >>> Also it may be interesting to see what is o class class. >>> (o class is not inspectable, is it?) >> >> As I see there is a circle but different one: >> >> dzindzik := (Metaclass allInstances detect: [:c | c superclass = >> ProtoObject class]). 1. >> o := dzindzik instVarNamed: #thisClass. 1. >> o class == dzindzik -> true It seems there is a problem with inst var indexes... just look at o name (it's printable, only it's a dictionary with dependent fields), something you would not wait from AClass name. Herby P.S.: dzindzik name and dzindzik methodDict are inspectable... method dict is normal, but name is again something strange...

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Herby VojÄÃk

Pavel Krivanek wrote: > On Wed, May 9, 2012 at 2:38 PM, Herby VojÄÃk<herby(a)mailbox.sk> wrote: >> >> Pavel Krivanek wrote: >>> Some next interesting information: >>> >>> o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject >>> class]) instVarNamed: #thisClass). 1. >>> >>> Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> an >>> OrderedCollection(Behavior Class ClassDescription Object ProtoObject) >>> >>> Smalltalk allClasses select: [:c | o class == c] -> an >>> OrderedCollection() "WTF" >> >> My gut feeling says 'o class == o' here. >> Also it may be interesting to see what is o class class. >> (o class is not inspectable, is it?) > > As I see there is a circle but different one: > > dzindzik := (Metaclass allInstances detect: [:c | c superclass = > ProtoObject class]). 1. > o := dzindzik instVarNamed: #thisClass. 1. > o class == dzindzik -> true ... what just says it's a metaclass... BTW, o methodDict is inspectable, it has size 338 and definitely is something from morphic taken from method names. Obviously :-) Smalltalk allClasses select: [ :c | c class methodDict size = 338] => anOrderedCollection() Herby > > -- Pavel > >> Herby >> >> >

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Pavel Krivanek

On Wed, May 9, 2012 at 2:38 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: > > > Pavel Krivanek wrote: >> >> Some next interesting information: >> >> o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject >> class]) instVarNamed: #thisClass). 1. >> >> Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> Â an >> OrderedCollection(Behavior Class ClassDescription Object ProtoObject) >> >> Smalltalk allClasses select: [:c | o class == c] -> Â an >> OrderedCollection() Â "WTF" > > > My gut feeling says 'o class == o' here. > Also it may be interesting to see what is o class class. > (o class is not inspectable, is it?) As I see there is a circle but different one: dzindzik := (Metaclass allInstances detect: [:c | c superclass = ProtoObject class]). 1. o := dzindzik instVarNamed: #thisClass. 1. o class == dzindzik -> true -- Pavel > Herby > >

May 9, 2012

Re: [Pharo-project] DrGeo Android release

by Douglas Brebner

On 09/05/2012 08:42, Hilaire Fernandes wrote: > Hello, > > A small note to let you know we release a free version of DrGeo on > Google Play. > > https://play.google.com/store/apps/details?id=eu.drgeo.android > > +1 for Smalltalk :) > It works quite nicely on my Galaxy SII phone. Congratulations :)

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Herby VojÄÃk

Pavel Krivanek wrote: > Some next interesting information: > > o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject > class]) instVarNamed: #thisClass). 1. > > Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> an > OrderedCollection(Behavior Class ClassDescription Object ProtoObject) > > Smalltalk allClasses select: [:c | o class == c] -> an > OrderedCollection() "WTF" My gut feeling says 'o class == o' here. Also it may be interesting to see what is o class class. (o class is not inspectable, is it?) Herby

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Pavel Krivanek

Some next interesting information: o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject class]) instVarNamed: #thisClass). 1. Smalltalk allClassesAndTraits select: [:c | o isKindOf: c] -> an OrderedCollection(Behavior Class ClassDescription Object ProtoObject) Smalltalk allClasses select: [:c | o class == c] -> an OrderedCollection() "WTF" o subclasses -> #Object "WTF!" o subclasses class -> ByteSymbol "WTF!! should be Array" o superclass -> ProtoObject "WTF" (o methodDict keys asSortedCollection first: 50) = (Object methodDict keys asSortedCollection first: 50) -> true "wasn't it Object in better times?" -- Pavel On Wed, May 9, 2012 at 1:35 PM, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: > I had the same idea but the build history is quite short (7) and with > our updating speed it is filled within two days :-) I extended the > builds count yesterday to 20. > > The next interesting information about dzindizik: > > o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject > class]) instVarNamed: #thisClass). 1. "number here to avoid printing". > > Smalltalk allClasses select: [:c | o isKindOf: c] -> an > OrderedCollection(Behavior Class ClassDescription Object ProtoObject) > > Smalltalk allClasses select: [:c | o class == c] -> an OrderedCollection() > > It looks like a subclass of Class :-) > > -- Pavel > > On Wed, May 9, 2012 at 1:24 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: >> Hi, >> >> just an idea: maybe bisecting and finding which update brought it in and >> then analyzing its changes may help... or you know it is 20059? >> >> Herby >> >> >> Pavel Krivanek wrote: >>> >>> Hi, >>> >>> If you take the latest Pharo 2.0 image from Jenkins (20059) and you >>> execute the expression: >>> >>> (Metaclass allInstances select: [:c | c superclass = ProtoObject class]) >>> inspect >>> >>> you will get an collection inspector where the first object is very >>> strange one. It is very hard to get any useful information about the >>> origin of this evil object. The only thing we know exactly is that it >>> causes virtual machine segmentation faults while trying to export class >>> ScrollBar via Fuel. Not only CogVM but even StackVM. >>> >>> Can you, please, try to help us to get as much information as possible >>> about this object? I named it "dzindzik" :-) >>> >>> Cheers, >>> -- Pavel >> >>

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Pavel Krivanek

thank you, version 51 is already infected. Has anyone some build between? -- Pavel On Wed, May 9, 2012 at 1:47 PM, Francisco Garau <francisco.garau(a)gmail.com> wrote: > Evaluating your code in #build 2041 returns only the 3 expected classes: > > (Metaclass allInstances select: [:c | c superclass = ProtoObject class]) > inspect > => > {Object class. MessageCatcher class. TestCoverage class} > > > On 9 May 2012 12:35, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: >> >> I had the same idea but the build history is quite short (7) and with >> our updating speed it is filled within two days :-) I extended the >> builds count yesterday to 20. >> >> The next interesting information about dzindizik: >> >> o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject >> class]) instVarNamed: #thisClass). 1. "number here to avoid printing". >> >> Smalltalk allClasses select: [:c | o isKindOf: c] -> an >> OrderedCollection(Behavior Class ClassDescription Object ProtoObject) >> >> Smalltalk allClasses select: [:c | o class == c] -> an OrderedCollection() >> >> It looks like a subclass of Class :-) >> >> -- Pavel >> >> On Wed, May 9, 2012 at 1:24 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: >> > Hi, >> > >> > just an idea: maybe bisecting and finding which update brought it in and >> > then analyzing its changes may help... or you know it is 20059? >> > >> > Herby >> > >> > >> > Pavel Krivanek wrote: >> >> >> >> Hi, >> >> >> >> If you take the latest Pharo 2.0 image from Jenkins (20059) and you >> >> execute the expression: >> >> >> >> (Metaclass allInstances select: [:c | c superclass = ProtoObject >> >> class]) >> >> inspect >> >> >> >> you will get an collection inspector where the first object is very >> >> strange one. It is very hard to get any useful information about the >> >> origin of this evil object. The only thing we know exactly is that it >> >> causes virtual machine segmentation faults while trying to export class >> >> ScrollBar via Fuel. Not only CogVM but even StackVM. >> >> >> >> Can you, please, try to help us to get as much information as possible >> >> about this object? I named it "dzindzik" :-) >> >> >> >> Cheers, >> >> -- Pavel >> > >> > >> >

May 9, 2012

Re: [Pharo-project] Strangest object ever seen?

by Francisco Garau

Evaluating your code in #build 2041 returns only the 3 expected classes: (Metaclass allInstances select: [:c | c superclass = ProtoObject class]) inspect => {Object class. MessageCatcher class. TestCoverage class} On 9 May 2012 12:35, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: > I had the same idea but the build history is quite short (7) and with > our updating speed it is filled within two days :-) I extended the > builds count yesterday to 20. > > The next interesting information about dzindizik: > > o := ((Metaclass allInstances detect: [:c | c superclass = ProtoObject > class]) instVarNamed: #thisClass). 1. "number here to avoid printing". > > Smalltalk allClasses select: [:c | o isKindOf: c] -> an > OrderedCollection(Behavior Class ClassDescription Object ProtoObject) > > Smalltalk allClasses select: [:c | o class == c] -> an OrderedCollection() > > It looks like a subclass of Class :-) > > -- Pavel > > On Wed, May 9, 2012 at 1:24 PM, Herby VojÄÃk <herby(a)mailbox.sk> wrote: > > Hi, > > > > just an idea: maybe bisecting and finding which update brought it in and > > then analyzing its changes may help... or you know it is 20059? > > > > Herby > > > > > > Pavel Krivanek wrote: > >> > >> Hi, > >> > >> If you take the latest Pharo 2.0 image from Jenkins (20059) and you > >> execute the expression: > >> > >> (Metaclass allInstances select: [:c | c superclass = ProtoObject class]) > >> inspect > >> > >> you will get an collection inspector where the first object is very > >> strange one. It is very hard to get any useful information about the > >> origin of this evil object. The only thing we know exactly is that it > >> causes virtual machine segmentation faults while trying to export class > >> ScrollBar via Fuel. Not only CogVM but even StackVM. > >> > >> Can you, please, try to help us to get as much information as possible > >> about this object? I named it "dzindzik" :-) > >> > >> Cheers, > >> -- Pavel > > > > > >

May 9, 2012