[Case 1184154] Unity 2019.3 Build failed because of Burst and Mathematics

Unity Engine
1

Unity 2019.3
Burst 1.1.2
Mathematics 1.1.0

When I tried to build the project, build failed with the folowing error:

Unexpected error while processing function `System.Collections.Generic.IEqualityComparer`1<int>.GetHashCode(System.Collections.Generic.IEqualityComparer`1<int>* this, int obj)`. Reason: ��뫪� �� ��ꥪ� �� 㪠�뢠�� �� �������� ��ꥪ�.
at Unity.Mathematics.noise.taylorInvSqrt(Unity.Mathematics.float4 r) (at C:\Unity\rocket_science\Library\PackageCache\com.unity.mathematics@1.1.0\Unity.Mathematics\Noise\common.cs:23)
at Unity.Mathematics.noise.snoise(Unity.Mathematics.float3 v) (at ...


Internal compiler exception: System.NullReferenceException: ��뫪� �� ��ꥪ� �� 㪠�뢠�� �� �������� ��ꥪ�.
   � Burst.Compiler.IL.Helpers.CecilExtensions.IsDelegate(TypeDefinition typeDef)
   � Burst.Compiler.IL.Intrinsics.FunctionPointerProcessor.IsDelegateInvoke(ILFunctionReference method)
   � Burst.Compiler.IL.Syntax.ILBuilder.IsIntrinsicCall(ILFunctionReference binding, Boolean& dontVisitImpl)
   � Burst.Compiler.IL.Syntax.ILBuilder.CreateFunctionFromRef(ILFunctionReference funcRef)
   � Burst.Compiler.IL.Syntax.ILBuilder.VisitPendingFunctionReferences()
2

Just to note: we’ve seen this issue and the associated case, and are in the process of looking into this. I’ll keep you posted!

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3

Thanks!

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4

I think I’ve identified the problem, will DM you.

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5

What are you doing to cause this? I’ve yet to experience it.

6

You should avoid using static managed objects in the Burst Jobs. In my case it was static managed Dictionary, that I used in the Burst Job. When I replaced that with method, everything works again. Thanks to @Lee_Hammerton for clarification.

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7

And just to be clear - the compiler should have done a better job at telling you that, and we’re going to fix that too :slight_smile:

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