Cpp2IL.Core.Exceptions.DllSaveException

[Jdewi12]

Tried to use this on a Nintendo Switch build of a game made with Unity using the force- options with --experimental-enable-il-to-assembly-please and --throw-safety-out-the-window.

I'm using the latest windows build from https://github.com/SamboyCoding/Cpp2IL/actions/runs/1450922865

At the end I get the following exception:

[Fail] [Program] Cpp2IL.Core.Exceptions.DllSaveException: Fatal Exception writing DLL E:\Downloads\Cpp2IL-Windows (1)\cpp2il_out\Assembly-CSharp.dll
 ---> Cpp2IL.Core.Exceptions.TypeWriteFailedException: Failed to write type Dpr.Battle.View.TaskSealEffects due to an exception
 ---> Cpp2IL.Core.Exceptions.MethodWriteFailedException: Failed to write body for method System.Void Dpr.Battle.View.TaskSealEffects::.ctor(Dpr.ObjectEntity,System.Collections.Generic.List`1<Dpr.Battle.View.Objects.BtlvEffectInstance>,System.Single,System.Int32) due to an exception
 ---> Cpp2IL.Core.Exceptions.InstructionWriteFailedException: Failed to write operand for instruction IL_003d: ldtoken Dpr.Battle.View.FromToPair`1<UnityEngine.Vector3>[] due to an exception
 ---> System.ArgumentException: Member 'UnityEngine.Vector3' is declared in another module and needs to be imported
   at Mono.Cecil.MetadataBuilder.LookupToken(IMetadataTokenProvider provider)
   at Mono.Cecil.SignatureWriter.WriteTypeSignature(TypeReference type)
   at Mono.Cecil.SignatureWriter.WriteGenericInstanceSignature(IGenericInstance instance)
   at Mono.Cecil.MetadataBuilder.GetTypeSpecToken(TypeReference type)
   at Mono.Cecil.MetadataBuilder.LookupToken(IMetadataTokenProvider provider)
   at DMD<Mono.Cecil.Cil.CodeWriter::WriteOperand>(CodeWriter this, Instruction instruction)
   --- End of inner exception stack trace ---
   at DMD<Mono.Cecil.Cil.CodeWriter::WriteOperand>(CodeWriter this, Instruction instruction)
   at Mono.Cecil.Cil.CodeWriter.WriteInstructions()
   at Mono.Cecil.Cil.CodeWriter.WriteResolvedMethodBody(MethodDefinition method)
   at DMD<Mono.Cecil.Cil.CodeWriter::WriteMethodBody>(CodeWriter this, MethodDefinition method)
   --- End of inner exception stack trace ---
   at DMD<Mono.Cecil.Cil.CodeWriter::WriteMethodBody>(CodeWriter this, MethodDefinition method)
   at Mono.Cecil.MetadataBuilder.AddMethod(MethodDefinition method)
   at Mono.Cecil.MetadataBuilder.AddMethods(TypeDefinition type)
   at DMD<Mono.Cecil.MetadataBuilder::AddType>(MetadataBuilder this, TypeDefinition type)
   --- End of inner exception stack trace ---
   at DMD<Mono.Cecil.MetadataBuilder::AddType>(MetadataBuilder this, TypeDefinition type)
   at Mono.Cecil.MetadataBuilder.AddTypes()
   at Mono.Cecil.MetadataBuilder.BuildTypes()
   at Mono.Cecil.MetadataBuilder.BuildModule()
   at Mono.Cecil.MetadataBuilder.BuildMetadata()
   at Mono.Cecil.ModuleWriter.Write(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
   at Mono.Cecil.ModuleWriter.WriteModule(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters)
   at Cpp2IL.Core.Cpp2IlApi.SaveAssemblies(String toWhere, List`1 assemblies)
   --- End of inner exception stack trace ---
   at Cpp2IL.Core.Cpp2IlApi.SaveAssemblies(String toWhere, List`1 assemblies)
   at Cpp2IL.Program.DoAnalysisForAssembly(String assemblyName, AnalysisLevel analysisLevel, String rootDir, BaseKeyFunctionAddresses keyFunctionAddresses, Boolean doIlToAsm, Boolean parallel, Boolean continueThroughErrors)
   at Cpp2IL.Program.MainWithArgs(Cpp2IlRuntimeArgs runtimeArgs)
   at Cpp2IL.Program.Main(String[] args)

There are also more (seemingly non-fatal) errors throughout the process; I've attached the full log in case they're relevant.
log.txt

[SamboyCoding]

Yeah, the various errors in the process are somewhat expected - the application isn't perfect (yet!) so failures here and there are expected. This one in specific is an oversight on my part - I likely won't be able to solve it tonight (though I do know and have access to the nso of which you speak) because it's my birthday and I'm out with family and friends, but I'll try and fix this tomorrow for you.

[Jdewi12]

Happy birthday!

And yeah I figured from the big red warnings that errors were kinda expected haha.

[SamboyCoding]

Okay, the root cause of this issue is due to the problems finding il2cpp api functions on NSO binaries, which have their list of exported functions changed to not include any il2cpp ones. That's causing cpp2il to not get a good analysis for the method in question. However, the actual error is still a problem, so for now I'll add a solution, but it needs fixing in proper detail later down the line.

[SamboyCoding]

Should work now - does on my machine at least

[Jdewi12]

Yep worked!