System.NullreferenceExcemtion

[alejandrojginerd]

I installed the library from binary but when i try to use it i get the following error

Error		Internal error:System.NullReferenceException: Object reference not set to an instance of an object.
   at _3S.CoDeSys.Compiler35200.ImplicitCode.InterfaceHierarchy.AddInterfaceHierarchy(IInterfaceHierarchy ih, Int32 nIdBaseToLookup)
   at _3S.CoDeSys.Compiler35200.ImplicitCode.InterfaceHierarchy.Initialize(IScope5 scope, _ISignature sign, Int32& Index)
   at _3S.CoDeSys.Compiler35200.ImplicitCode.InterfaceSignatureGenerator.AddInterfaceHierarchy(_ISignature sign, IScope5 gscope)
   at _3S.CoDeSys.Compiler35200.ImplicitCode.InterfaceSignatureGenerator.AddInterfaceSignaturesAfterTypify(_ICompileContext comconNew, _ICompileContext comconRef)
   at _3S.CoDeSys.Compiler35200.CompilerPhases.CompilerPhase2_AfterTypification.DoAfterTypificationActions(Boolean bErrorsOccured)
   at _3S.CoDeSys.Compiler35200.CompilerPhases.CompilerPhase1_Typifier.TypifyAll()
   at _3S.CoDeSys.Compiler35200.CompilerPhases.CompilerPhaseControllerCompile.Compile(Boolean bDoTypification, Boolean bCallWaitForDownloadInfoSavingCallback, Boolean bCheckAll)			0	

I have tried installing it from source but I get the same error when rebuilding the solution.

TwinCAT XAE Base - 3.1.4026.12
TcMatrix - 1.4.3
TcTransform - 0.3.36
TcUnit - 1.3.1

[BurksEngineering]

There appears to be an incompatibility issue with the 4026 compiler. See BurksEngineering/TcMatrix#11 for a TcMatrix library solution that is compatible with 4026, but might reduce some functionality.

[alejandrojginerd]

Even after updating the Tcmatrix library to TcMatrix4026 when rebuilding the TcTransform library from source, i get the same error. I made sure that TcMatrix4026 works by building it from source and running the testsuite

[BurksEngineering]

Interesting. See if you can adjust some of the code within TcTransform the same way @djonas171 was able to adjust TcMatrix, following this approximate pattern, which is typically supported:

FROM:
DestinationMatrix := SourceMatrix.MethodCall(args);
TO:
SourceMatrix.MethodCall(DestinationMatrix,args);

This is especially true on anything using the SubMatrixAccessor interface stuff. If it works, please submit a PR for a v4026 branch!

[djonas171]

I think the sub matrix accessor is one of the few items using the FillFromAt, so it may not work as intended in my current 4026 fix. I Hope to have more time to look into this the coming week.