Yes, this is a problem with Cog and Method wrappers it seems. Camille found not so long ago that when installing a method wrapper with instance variables, the VM just crashes. I think this should be the case.
Anyway, I was just playing a bit because I want to use method wrappers for some experiments. So, the following looks like working when using wrappers with no inst vars. method := MyA>>#a. [ MyA methodDictionary at: #a put: MyWrapper new. anA := MyA new. res := anA a. ] ensure: [ MyA methodDictionary at: #a put: method. method flushCache. ]. res Doing the same with a wrapper with inst vars just crashes the vm. However, if flushing the method cache after installing the method in the method dictionary, makes it work... method := MyA>>#a. [ MyA methodDictionary at: #a put: MyWrapperWithInstVar new. method flushCache. anA := MyA new. res := anA a. ] ensure: [ MyA methodDictionary at: #a put: method. method flushCache. ]. res So it looks like a problem in the JIT cache not cleared :). Now, I was looking at the TestCoverage class, to see how to make it work, but not results yet :P. Guille On Sun, May 26, 2013 at 6:48 PM, Frank Shearar <frank.shea...@gmail.com>wrote: > Hi, > > I wanted to see FileSystem's coverage, so I > * downloaded 3.0 via curl http://get.pharo.org/30+vm | bash, > * fired up the image, > * opened the TestRunner, > * highlighted the three FileSystem packages, > * "select all"ed, > * pressed "Run Coverage" > > and the VM crashed with a segfault. I tried with a few other packages, > and every time I tried to run coverage the VM died with the same > message: > > Segmentation fault Sun May 26 15:46:45 2013 > > > pharo VM version: 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3 > Built from: NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 > uuid: a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > With: NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid: > a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013 > Revision: git://gitorious.org/cogvm/blessed.git Commit: > 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 > +0100 By: Esteban Lorenzano <esteba...@gmail.com> Jenkins build #14535 > Build host: Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed > Jan 4 11:26:59 UTC 2012 x86_64 GNU/Linux > plugin path: /home/frank/Downloads/pharo-3.0/pharo-vm/ [default: > /home/frank/Downloads/pharo-3.0/pharo-vm/] > > > C stack backtrace: > pharo-vm/pharo[0x80a0c0c] > pharo-vm/pharo[0x80a0f28] > [0x408410] > [0x77744f1e] > [0x777447c8] > [0x7819010f] > [0x777454f9] > [0x777447c8] > [0x7818e112] > [0x777fc687] > [0x777456ea] > [0x77744668] > > > Smalltalk stack dump: > 0xbfc98e4c I [] in InteractiveResolverTest(TestCase)>runCase > 0x78f0bfc8: a(n) InteractiveResolverTest > 0xbfc98e6c M BlockClosure>ensure: 0x78fa4c34: a(n) BlockClosure > 0xbfc98e90 I InteractiveResolverTest(TestCase)>runCase 0x78f0bfc8: > a(n) InteractiveResolverTest > 0xbfc98eb4 I [] in TestResult>runCase: 0x78f0bdcc: a(n) TestResult > 0xbfc98ed0 M BlockClosure>on:do: 0x78fa4a30: a(n) BlockClosure > 0xbfc98ef8 I TestResult>runCase: 0x78f0bdcc: a(n) TestResult > 0xbfc98f1c I InteractiveResolverTest(TestCase)>run: 0x78f0bfc8: a(n) > InteractiveResolverTest > 0xbfc98f3c M [] in TestSuite>run: 0x78f0bfb0: a(n) TestSuite > 0xbfc98f5c M OrderedCollection>do: 0x78f0bfdc: a(n) OrderedCollection > 0xbfc9fdf0 I [] in TestSuite>run: 0x78f0bfb0: a(n) TestSuite > 0xbfc9fe10 M BlockClosure>ensure: 0x78fa48e4: a(n) BlockClosure > 0xbfc9fe34 I TestSuite>run: 0x78f0bfb0: a(n) TestSuite > 0xbfc9fe58 I [] in TestRunner>runSuite: 0x78e405bc: a(n) TestRunner > 0xbfc9fe80 I BlockClosure>cull:cull: 0x78f9c050: a(n) BlockClosure > 0xbfc9feb0 I [] in TestRunner>executeSuite:as: 0x78e405bc: a(n) TestRunner > 0xbfc9fed0 M BlockClosure>ensure: 0x78f9c420: a(n) BlockClosure > 0xbfc9fef4 I TestRunner>executeSuite:as: 0x78e405bc: a(n) TestRunner > 0xbfc9ff1c I TestRunner>runSuite: 0x78e405bc: a(n) TestRunner > 0xbfc9ff3c M [] in TestRunner>collectCoverageFor: 0x78e405bc: a(n) > TestRunner > 0xbfc9ff5c M BlockClosure>ensure: 0x78f9bfcc: a(n) BlockClosure > 0xbfc97e54 M [] in TestRunner>collectCoverageFor: 0x78e405bc: a(n) > TestRunner > 0xbfc97e74 M BlockClosure>ensure: 0x78f0dd7c: a(n) BlockClosure > 0xbfc97ea8 I BlockClosure>valueUnpreemptively 0x78f0dd7c: a(n) BlockClosure > 0xbfc97ed4 I TestRunner>collectCoverageFor: 0x78e405bc: a(n) TestRunner > 0xbfc97ef8 M TestRunner>runCoverage 0x78e405bc: a(n) TestRunner > 0xbfc97f18 I PluggableButtonMorph>performAction: 0x78e6c24c: a(n) > PluggableButtonMorph > 0xbfc97f38 M [] in PluggableButtonMorph>mouseUp: 0x78e6c24c: a(n) > PluggableButtonMorph > 0xbfc97f5c M Array(SequenceableCollection)>do: 0x78ed9f14: a(n) Array > 0xbfc93e08 M PluggableButtonMorph>mouseUp: 0x78e6c24c: a(n) > PluggableButtonMorph > 0xbfc93e28 M PluggableButtonMorph(Morph)>handleMouseUp: 0x78e6c24c: > a(n) PluggableButtonMorph > 0xbfc93e44 M MouseButtonEvent>sentTo: 0x78ed9eec: a(n) MouseButtonEvent > 0xbfc93e60 M PluggableButtonMorph(Morph)>handleEvent: 0x78e6c24c: a(n) > PluggableButtonMorph > 0xbfc93e7c M PluggableButtonMorph(Morph)>handleFocusEvent: 0x78e6c24c: > a(n) PluggableButtonMorph > 0xbfc93ea4 M [] in HandMorph>sendFocusEvent:to:clear: 0x77b1c270: a(n) > HandMorph > 0xbfc93ec0 M [] in PasteUpMorph>becomeActiveDuring: 0x7796b824: a(n) > PasteUpMorph > 0xbfc93edc M BlockClosure>on:do: 0x78ed9e5c: a(n) BlockClosure > 0xbfc93f08 M PasteUpMorph>becomeActiveDuring: 0x7796b824: a(n) PasteUpMorph > 0xbfc93f2c M HandMorph>sendFocusEvent:to:clear: 0x77b1c270: a(n) HandMorph > 0xbfc93f54 M HandMorph>sendEvent:focus:clear: 0x77b1c270: a(n) HandMorph > 0xbfc92e44 M HandMorph>sendMouseEvent: 0x77b1c270: a(n) HandMorph > 0xbfc92e68 M HandMorph>handleEvent: 0x77b1c270: a(n) HandMorph > 0xbfc92e94 M HandMorph>processEvents 0x77b1c270: a(n) HandMorph > 0xbfc92eac M [] in WorldState>doOneCycleNowFor: 0x7797ab44: a(n) WorldState > 0xbfc92ed0 M Array(SequenceableCollection)>do: 0x77846894: a(n) Array > 0xbfc92eec M WorldState>handsDo: 0x7797ab44: a(n) WorldState > 0xbfc92f08 M WorldState>doOneCycleNowFor: 0x7797ab44: a(n) WorldState > 0xbfc92f24 M WorldState>doOneCycleFor: 0x7797ab44: a(n) WorldState > 0xbfc92f40 M PasteUpMorph>doOneCycle 0x7796b824: a(n) PasteUpMorph > 0xbfc92f60 I [] in MorphicUIManager>? 0x7797ebd4: a(n) MorphicUIManager > 0x77c9891c s [] in BlockClosure>? > > Most recent primitives > class > class > class > class > class > class > class > >
