On Sat, Apr 2, 2011 at 11:22 AM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

Ok. I put a breakpoint. It is failing in fwdBlockValid(sqInt addr) because addr is -704272 and fwdTableNext is 485379232. fieldOop is 434931672

Uh, Mariano, you have a heap corruption that _you_ need to track down. I can't be expected to debug every problem anyone has just because it's in the context of Cog. You need to at least try and localize the heap corruption and see whether it's your code or mine before you expect me to debug the issue. Please :)

best, Eliot

If you feel more confortable trying it by yourself, remember I sent you the link with the imaeg already to test it.

I attach an screenshot with the stacktrace. Tell me if tehre is a better way to do this.

I rememeber being able to print the stacktrace from gdb...but I don't remember how...

At least, I also have this:

(gdb) bt #0 fwdBlockValid (addr=-704272) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:16307 #1 0x0005e927 in updatePointersInRangeFromto (memStart=482078784, memEnd=485377172) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:43353 #2 0x0003d062 in mapPointersInObjectsFromto (memStart=482078784, memEnd=485377172) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:19921 #3 0x000384a4 in incCompBody () at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:16848 #4 0x00038ef5 in incrementalGC () at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:17205 #5 0x0005da6a in sufficientSpaceAfterGC (minFree=0) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:42725 #6 0x0002f98c in checkForEventsMayContextSwitch (mayContextSwitch=1) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:11046 #7 0x000382d2 in handleStackOverflowOrEventAllowContextSwitch (mayContextSwitch=1) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:16700 #8 0x0002f16e in ceStackOverflow (contextSwitchIfNotNil=435097604) at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:10789 #9 0x19df122e in ?? () #10 0x00039f94 in initStackPagesAndInterpret () at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:17751 #11 0x00020106 in interpret () at /Users/mariano/bin/blessed/build/../src/vm/gcc3x-cointerp.c:1935 #12 0x0006aaf6 in EventLoopEventHandler (inHandlerCallRef=0xbfffd0a0, inEvent=0x650510, inUserData=0x0) at /Users/mariano/bin/blessed/build/../platforms/Mac OS/vm/sqMacUIEventsUniversal.c:1370 #13 0x949ecc2f in DispatchEventToHandlers () #14 0x949ebef6 in SendEventToEventTargetInternal () #15 0x949ebd55 in SendEventToEventTargetWithOptions () #16 0x94a20a24 in ToolboxEventDispatcherHandler () #17 0x949ed080 in DispatchEventToHandlers () #18 0x949ebef6 in SendEventToEventTargetInternal () #19 0x94a0e7f3 in SendEventToEventTarget () #20 0x94b97c17 in ToolboxEventDispatcher () #21 0x94b97d4f in RunApplicationEventLoop () #22 0x0006abe8 in RunApplicationEventLoopWithSqueak () at /Users/mariano/bin/blessed/build/../platforms/Mac OS/vm/sqMacUIEventsUniversal.c:1429 #23 0x00063da0 in main (argc=1, argv=0xbffff7d8, envp=0xbffff7e0) at /Users/mariano/bin/blessed/build/../platforms/Mac OS/vm/sqMacMain.c:464 (gdb)

thanks a lot in advance

mariano

On Fri, Apr 1, 2011 at 6:55 PM, Eliot Miranda eliot.miranda@gmail.comwrote:

...

Mariano,

put a breakpoint in warning and then you'll stop when the first assert

fails rather than long after the fact once the assert violations have caused havoc and led to the crash.

On Fri, Apr 1, 2011 at 4:37 AM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

...

OK....running with GDB I got the following stacktrace. And the error happens in marryFrameSP() here:

: AllocationCheckFiller)))) { error("last object overwritten"); }

Stack:

The Debugger has exited with status 0. [Session started at 2011-04-01 13:33:17 +0200.] GNU gdb 6.3.50-20050815 (Apple version gdb-1510) (Wed Sep 22 02:45:02 UTC 2010) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys003 Loading program into debugger… sharedlibrary apply-load-rules all Program loaded. run [Switching to process 34248] Running… mprotect(x,y,PROT_READ | PROT_WRITE): Cannot allocate memory squeak: could not load plugin `MiscPrimitivePlugin' squeak: could not load plugin `DropPlugin' squeak: could not load plugin `FilePlugin' squeak: could not load plugin `SecurityPlugin' squeak: could not load plugin `MacMenubarPlugin' squeak: could not load plugin `LargeIntegers' squeak: could not load plugin `BitBltPlugin' squeak: could not load plugin `B2DPlugin' squeak: could not load plugin `InternetConfigPlugin' squeak: could not load plugin `LocalePlugin'

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(cesoRetAddr - (abortOffset())) == (((sqInt)(asCogHomeMethod(cogMethod)))) 10782

(((usqInt)methodField)) < (maxCogMethodAddress()) 9119

(numStack + ReceiverIndex) < (lengthOf(theContext)) 21157

last object overwritten

C stack backtrace: 0 CogVM 0x0006348e reportStackState + 155 1 CogVM 0x0006361e error + 41 2 CogVM 0x0003f1cd marryFrameSP + 605 3 CogVM 0x0005e449 transferTofrom + 468 4 CogVM 0x00053bee primitiveWait + 196 5 ??? 0x19b96c0b 0x0 + 431582219 6 CogVM 0x00039fd5 initStackPagesAndInterpret + 472 7 CogVM 0x000201d6 interpret + 56 8 CogVM 0x0006ab37 EventLoopEventHandler

• 16

9 HIToolbox 0x949ecc2f _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec

• 1567

10 HIToolbox 0x949ebef6 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec

• 411

11 HIToolbox 0x949ebd55 SendEventToEventTargetWithOptions + 58 12 HIToolbox 0x94a20a24 _ZL29ToolboxEventDispatcherHandlerP25OpaqueEventHandlerCallRefP14OpaqueEventRefPv

• 3006

13 HIToolbox 0x949ed080 _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec

• 2672

14 HIToolbox 0x949ebef6 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec

• 411

15 HIToolbox 0x94a0e7f3 SendEventToEventTarget

• 52

16 HIToolbox 0x94b97c17 ToolboxEventDispatcher

• 86

17 HIToolbox 0x94b97d4f RunApplicationEventLoop + 243 18 CogVM 0x0006ac29 RunApplicationEventLoopWithSqueak + 235 19 CogVM 0x00063de1 main + 1233 20 CogVM 0x000067c5 start + 53

Smalltalk stack dump: 0xbff5e5c0 M Delay class>handleTimerEvent 433526220: a(n) Delay class 0xbff5e5e0 I Delay class>? 433526220: a(n) Delay class 442578360 s [] in Delay class>? 442578636 s [] in BlockClosure>?

Most recent primitives class basicNew: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: basicNew basicNew class class basicNew: basicNew value: class class findFirstInString:inSet:startingAt: class class size

replaceFrom:to:with:startingAt: primDeleteFileNamed: value: basicNew: at:put: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: class class class class findFirstInString:inSet:startingAt: primWrite:from:startingAt:count: basicNew: at:put: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: class class class class findFirstInString:inSet:startingAt: primWrite:from:startingAt:count: basicNew: class class class indexOfAscii:inString:startingAt: class class basicNew: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: basicNew species basicNew: replaceFrom:to:with:startingAt: size species basicNew: replaceFrom:to:with:startingAt: class class class indexOfAscii:inString:startProgram received signal: “SIGABRT”. ingAt: class class basicNew: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: basicNew basicNew class class size basicNew: basicNew value: class class findFirstInString:inSet:startingAt: class class replaceFrom:to:with:startingAt: = value primOpen:writable: value: class shallowCopy size \ at: value ensure: valueNoContextSwitch wait value on:do: value value basicNew: class at:put: basicIdentityHash basicNew: basicAt:put: at:put: size

size //

size value signal basicNew: species basicNew: basicNew class class class class basicNew basicNew: basicNew: replaceFrom:to:with:startingAt: primGetPosition: basicNew at: value value

//

at:

at: new: basicNew

// size at: new: basicNew new: basicNew new: basicNew new: species basicNew: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: class class class indexOfAscii:inString:startingAt: class class basicNew: at:put: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: basicNew basicNew class class basicNew: basicNew class class findFirstInString:inSet:startingAt: class class replaceFrom:to:with:startingAt: basicNew class class basicNew: basicNew class class findFirstInString:inSet:startingAt: class class class class class basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: basicNew class class basicNew: basicNew class class findFirstInString:inSet:startingAt: class class class class class basicNew: replaceFrom:to:with:startingAt: replaceFrom:to:with:startingAt: species basicNew: replaceFrom:to:with:startingAt: primSetMacFileNamed:type:creator: millisecondClockValue signal primSignal:atMilliseconds: millisecondClockValue wait (gdb)

On Fri, Apr 1, 2011 at 12:33 PM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

...

Hi Eliot. I am still finding this problem with latest CogVM. I cannot say more than what I have already say. I've tried with all your VMs, including the latest VM.r2370. I tried Pharo CI vms, and compiled by my own...all same result so I think it is a problem in the core of Cog, related to the usage of objects as methods.

Just in case I am in Mac OS 10.6.7

I can tell you all this information:

• My tests are all about using proxies for compiled methods (using the

#cannotInterpret: and #run:with:in tricks).

• The crash DOES NOT happens if I compile a StackVM, it ONLY happens in

CogVM.

• With Cog, I have the crash with both, Development or Production.

I have prepared an image with a test runner open where you only need to run the test. If it doesn't crash in the first time, in the second it will for sure.

Link to the image prepared: https://gforge.inria.fr/frs/download.php/28432/cogCrash.zip

I also told you that in the gdb console, just before crashing I can see:

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 20705

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

((((CogMethod *) methodHeader)->cmType)) == CMMethod 43322

I also paste here the stack of the crash:

Process: Croquet [30987] Path: /Users/mariano/Pharo/VM/Cog 8.app/Contents/MacOS/Croquet Identifier: com.teleplace.Teleplace Version: Croquet Cog 3.0.0 (4.0.0) Code Type: X86 (Native) Parent Process: launchd [228]

Date/Time: 2011-04-01 12:25:48.162 +0200 OS Version: Mac OS X 10.6.7 (10J869) Report Version: 6

Interval Since Last Report: 170620 sec Crashes Since Last Report: 1 Per-App Interval Since Last Report: 138436 sec Per-App Crashes Since Last Report: 3 Anonymous UUID: 1619B1AF-FDFA-4D6A-B54D-479432C4B547

Exception Type: EXC_BAD_ACCESS (SIGABRT) Exception Codes: 0x000000000000000d, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Application Specific Information: abort() called

Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libSystem.B.dylib 0x98e28156 __kill + 10 1 libSystem.B.dylib 0x98e28148 kill$UNIX2003 + 32 2 libSystem.B.dylib 0x98eba899 raise + 26 3 libSystem.B.dylib 0x98ed09b8 abort + 93 4 com.teleplace.Teleplace 0x0006dec8 sigsegv + 184 5 libSystem.B.dylib 0x98e2d45b _sigtramp + 43 6 ??? 0x1acc59a4 0 + 449599908 7 ??? 0x1ad505a0 0 + 450168224

Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x98ded922 kevent + 10 1 libSystem.B.dylib 0x98dee03c _dispatch_mgr_invoke + 215 2 libSystem.B.dylib 0x98ded4f9 _dispatch_queue_invoke

• 163

3 libSystem.B.dylib 0x98ded29e _dispatch_worker_thread2 + 240 4 libSystem.B.dylib 0x98decd21 _pthread_wqthread + 390 5 libSystem.B.dylib 0x98decb66 start_wqthread + 30

Thread 2: 0 libSystem.B.dylib 0x98dec9b2 __workq_kernreturn + 10 1 libSystem.B.dylib 0x98decf48 _pthread_wqthread + 941 2 libSystem.B.dylib 0x98decb66 start_wqthread + 30

Thread 3: 0 libSystem.B.dylib 0x98dec9b2 __workq_kernreturn + 10 1 libSystem.B.dylib 0x98decf48 _pthread_wqthread + 941 2 libSystem.B.dylib 0x98decb66 start_wqthread + 30

Thread 4: com.apple.CFSocket.private 0 libSystem.B.dylib 0x98de6066 select$DARWIN_EXTSN + 10 1 com.apple.CoreFoundation 0x920f3c83 __CFSocketManager + 1091 2 libSystem.B.dylib 0x98df47fd _pthread_start + 345 3 libSystem.B.dylib 0x98df4682 thread_start + 34

Thread 5: 0 libSystem.B.dylib 0x98dec9b2 __workq_kernreturn + 10 1 libSystem.B.dylib 0x98decf48 _pthread_wqthread + 941 2 libSystem.B.dylib 0x98decb66 start_wqthread + 30

Thread 6: 0 libSystem.B.dylib 0x98df5046 __semwait_signal + 10 1 libSystem.B.dylib 0x98e20ec5 nanosleep$UNIX2003 + 188 2 com.teleplace.Teleplace 0x000b063b beatStateMachine + 139 3 libSystem.B.dylib 0x98df47fd _pthread_start + 345 4 libSystem.B.dylib 0x98df4682 thread_start + 34

Thread 0 crashed with X86 Thread State (32-bit): eax: 0x00000000 ebx: 0x98ed0967 ecx: 0xbff60b6c edx: 0x98e28156 edi: 0xbff61310 esi: 0xbff60fec ebp: 0xbff60b88 esp: 0xbff60b6c ss: 0x0000001f efl: 0x00000282 eip: 0x98e28156 cs: 0x00000007 ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037 cr2: 0x00108df0

Binary Images: 0x1000 - 0x125ff7 +com.teleplace.Teleplace Croquet Cog 3.0.0 (4.0.0) <6CB9C344-06A4-BE8D-8A61-76B3F0001A2B> /Users/mariano/Pharo/VM/Cog 8.app/Contents/MacOS/Croquet 0x8fe00000 - 0x8fe4162b dyld 132.1 (???) <A4F6ADCC-6448-37B4-ED6C-ABB2CD06F448> /usr/lib/dyld 0x9004a000 - 0x90343fef com.apple.QuickTime 7.6.6 (1756.15)

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Model: MacBookPro6,2, BootROM MBP61.0057.B0C, 2 processors, Intel Core i5, 2.4 GHz, 4 GB, SMC 1.58f16 Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 256 MB Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB Memory Module: global_name AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.36.9) Bluetooth: Version 2.4.0f1, 2 service, 19 devices, 1 incoming serial ports Network Service: AirPort, AirPort, en1 Serial ATA Device: ST9500420ASG, 465.76 GB Serial ATA Device: MATSHITADVD-R UJ-898 USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000 USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000 USB Device: Keyboard Hub, 0x05ac (Apple Inc.), 0x1005, 0xfa140000 USB Device: Apple Keyboard, 0x05ac (Apple Inc.), 0x021e, 0xfa142000 USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0xfa120000 USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000 USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000 FireWire Device: Passport III, WD, Up to 800 Mb/sec

On Tue, Dec 21, 2010 at 7:53 PM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

...

On Mon, Dec 20, 2010 at 7:55 PM, Eliot Miranda < eliot.miranda@gmail.com> wrote:

...

Hi Mariano,

this looks like a Cog VM bug. You should try and create a reproducible case and then send it to me.

Hi Eliot. Define "reproducable case" ;) Really, I don't have a simple TestCase/Doit that reproduce this, but I can be sure that when running all my tests (that use objects as methods) it crashes. If it is not in the first time, for SURE in the second. But as said, it is not always in the same place not the same test. Because the problem seems while running an incremental GC.

What I can provide you is a Pharo image, with all my code loaded, and the test runner open with the test you have to run. And promise: if the first time or second, you will have the crash. I tried to upload the image to the gforge project and we have a problem right now with it. I just send it by private email to you. I hope you don'y bother.

I can tell you all this information:

• My tests are all about using proxies for compiled methods (using

#cannotInterpret: and #run:with:in: tricks).

• The crash DOES NOT happens if I compile a StackVM, it ONLY happens in

CogVM.

• With Cog, I have the crash with both, Development or Production.

Thanks A LOT in advance,

Mariano

...

On Mon, Dec 20, 2010 at 5:31 AM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

> > Hi Eliot. I am having some asserts failing while running my tests. > Most of them during the sweep phase of the GC. > > The two places where it fails is in > > - NewCoObjectMemory >> lastPointerWhileForwarding: oop > > if fails the assert: self assert: (coInterpreter cCoerceSimple: > methodHeader to: #'CogMethod *') cmType = CMMethod. > In different runs, the cmType answer me 1 (CMFree) > > - NewCoObjectMemory >> lastPointerOf: oop recordWeakRoot: > recordWeakRoot "<Boolean>" > > and it fails in the same assert: self assert: (coInterpreter > cCoerceSimple: methodHeader to: #'CogMethod *') cmType = CMMethod. > > In different runs, I got values 0 or 6. BTW....seing: > > initializeCogMethodConstants > CMOpenPIC := 1 + (CMClosedPIC := 1 + (CMBlock := 1 +(CMMethod := > 1 + (CMFree := 1)))) > > I cannot understand how can I get 0 or 6.... > > > Anyway, my question is if you have a clue of what can be happening so > that those asserts are failing. I am using Objects as methods, but normal > objects (subclasses of ProtoObject). > > Thanks in advance, > > mariano > >