unique75m
commented
2 years ago Here is the information from the Squeak image, when i run it with my compiled debug VM
Image
C:\Users\joerg\Persoenlich\Entwicklung\Squeak\projects\Finance\Finance.image Squeak5.3 latest update: #19459 Current Change Set: HomeProject Image format 68021 (64 bit)
Virtual Machine
C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\building\win64x64\squeak.cog.spur\builddbg\vm\Squeak.exe Open Smalltalk Cog[Spur] VM [CoInterpreterPrimitives VMMaker.oscog-eem.3148] Win32 built on Feb 14 2022 08:47:40 Compiler: Clang 13.0.0 platform sources revision VM: 202202101841 joerg@timemachine:/c/Users/joerg/Persoenlich/Entwicklung/Squeak/vmssource/trunk Date: Thu Feb 10 10:41:46 2022 CommitHash: 5b1e8dc03 Plugins: 202202101841 joerg@timemachine:/c/Users/joerg/Persoenlich/Entwicklung/Squeak/vmssource/trunk CoInterpreter VMMaker.oscog-eem.3148 uuid: 55858401-f9a2-4458-ab45-b576bac43a1c Feb 14 2022 StackToRegisterMappingCogit VMMaker.oscog-eem.3144 uuid: 37de7fbf-c56f-4ea3-bdf1-23cef3bb9631 Feb 14 2022
To Build A Similar Virtual Machine
Visit https://github.com/OpenSmalltalk/opensmalltalk-vm; follow the "Clone or download" instructions, then read the top-level README.md and HowToBuild files in the top-level build directory for your platform(s), build.macos64x64/HowToBuild, build.win32x86/HowToBuild, etc.
This I what I get in the VS2022 debugger. Of course, at the moment I do not understand the code there, but maybe hopefully Eliot can see something interesting in it. I leave VS open and look tomorrow at the code, maybe I understand a bit of it :-)
Seems there is something wrong with the forward pointers. I assume the longAt(referent) fails? I guess it is a macro, but VS could not find the definition.
########## Code area - the --> line is failing with access violation ###########
/ begin literalCountOfMethodHeader: / assert((((header) & 7) == 1)); numLiterals = ((header >> 3)) & AlternateHeaderNumLiteralsMask; numSlots = numLiterals + LiteralStart; l9: / end numStrongSlotsOf:format:ephemeronInactiveIf: /; for (i = 0; i < numSlots; i += 1) { referent = longAt((referrer + BaseHeaderSize) + (((sqInt)((usqInt)(i) << (shiftForWord()))))); if ((!(referent & (tagMask())))) {
--> if ((!((longAt(referent)) & ((classIndexMask()) - (isForwardedObjectClassIndexPun()))))) { / begin followForwarded: / assert(isUnambiguouslyForwarder(referent)); / begin fetchPointer:ofMaybeForwardedObject: / referent1 = longAt((referent + BaseHeaderSize) + (0U << (shiftForWord()))); while (((!(referent1 & (tagMask())))) && ((!((longAt(referent1)) & ((classIndexMask()) - (isForwardedObjectClassIndexPun())))))) { / begin fetchPointer:ofMaybeForwardedObject: / referent1 = longAt((referent1 + BaseHeaderSize) + (0U << (shiftForWord()))); } referent = referent1;
########## Call stack ############
Squeak.exe!scavengeReferentsOf(int64 referrer) Zeile 42680 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (42680) Squeak.exe!scavengeRememberedSetStartingAt(int64 n) Zeile 42760 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (42760) Squeak.exe!scavengeLoop() Zeile 42542 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (42542) Squeak.exe!doScavenge(int64 tenuringCriterion) Zeile 47599 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (47599) Squeak.exe!scavengingGCTenuringIf(int64 tenuringCriterion) Zeile 57959 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (57959) Squeak.exe!sufficientSpaceAfterGC(int64 numBytes) Zeile 58691 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (58691) Squeak.exe!checkForEventsMayContextSwitch(int64 mayContextSwitch) Zeile 62762 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (62762) Squeak.exe!handleStackOverflowOrEventAllowContextSwitch(int64 mayContextSwitch) Zeile 66037 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (66037) Squeak.exe!ceStackOverflow(int64 contextSwitchIfNotNil) Zeile 15593 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (15593) [Externer Code] Squeak.exe!ioInitHeartbeat() Zeile 420 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\platforms\win32\vm\sqWin32Heartbeat.c (420) Squeak.exe!interpret() Zeile 2875 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\src\spur64.cog\cointerp.c (2875) Squeak.exe!sqMain(int argc, char argv) Zeile 1761 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\platforms\win32\vm\sqWin32Main.c (1761) Squeak.exe!WinMain(HINSTANCE * hInst, HINSTANCE hPrevInstance, char lpCmdLine, int nCmdShow) Zeile 1851 unter C:\Users\joerg\Persoenlich\Entwicklung\Squeak\vmssource\trunk\platforms\win32\vm\sqWin32Main.c (1851) [Externer Code]
########## Locals ############
############## Second try ##################
I needed to restart it again, here are my new local values in debugger
numSlots seems to me very wrong. If I do some calculations I get also not the same value that the debugger says me. Here is the code
For me is:
Seems to me somebody has overridden already the „header“ variable, which seems to be wrong. Could it be that some other thread is writing in the wrong memory area and override my values?
Jörg
########## System Information ##############
Gerätename timemachine Prozessor AMD Ryzen 9 3900X 12-Core Processor 3.80 GHz Installierter RAM 32,0 GB Geräte-ID F6FA897B-DDB1-44D6-9BF3-8BD1110AA754 Produkt-ID 00326-10048-08575-AA867 Systemtyp 64-Bit-Betriebssystem, x64-basierter Prozessor Stift- und Toucheingabe Für diese Anzeige ist keine Stift- oder Toucheingabe verfügbar.
Edition Windows 10 Home Version 20H2 Installiert am 23.03.2021 Betriebssystembuild 19042.1526 Leistung Windows Feature Experience Pack 120.2212.4170.0
Visual Studio 2022 win64x64\squeak.cog.spur VM version ??? I ask Eliot how i can see that on my current local github clone and post it later
############# Code for reproducation ##############
Simply execute the following Smalltalk code. Maybe you need to run it multiple times, for me the crash happens sometimes at the 3rd or 4th try.
| oc | oc := OrderedCollection new. 400000000 timesRepeat: [oc add: Object new]