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Unable to hash type 'Code' due to exception: System.NotSupportedException: Unknown element type: Var
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anderswg
#1 Posted : Friday, November 17, 2023 12:08:41 PM(UTC)
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Hi, im getting this error when running tests on code with generic attributes



Code:
Quote:

using Microsoft.VisualStudio.TestTools.UnitTesting;


[MyAttribute<MyEnum>(MyEnum.One)]
public class Code
{

}

public class MyAttribute<T> : Attribute where T : Enum
{
public MyAttribute(T value)
{

}
}

public enum MyEnum
{
One
}


[TestClass]
public class CodeTests
{
[TestMethod]
public void Test()
{
var code = new Code();
}
}



Full error:
NCrunch has encountered an internal error: System.Exception: nCrunch.Compiler.StaticManipulation.CilTypeHashException: Unable to hash type 'Code' due to exception: System.NotSupportedException: Unknown element type: Var
at nCrunch.Compiler.Cil.CustomAttributes.CilAttributeArgument.get_SizeInBytes()
at nCrunch.Compiler.Cil.CustomAttributes.CilCustomAttributeValue.get_NamedArguments()
at nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashCustomAttribute(FNV64& hash, CilCustomAttribute customAttribute)
at nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashType(FNV64& hash, CilTypeDefinition type)
at nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
at nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
at nCrunch.Compiler.CilProcessingTasks.CilMethodHashingTask..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.()
at nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.ProcessTasks(Int32 backgroundThreadsAllowed)
at nCrunch.Compiler.RemoteBuildRunner.(ComponentInstrumentationParameters , BuildOutput , IBackgroundTaskProcessor )
at nCrunch.Compiler.RemoteBuildRunner.PerformPostProcessingOfBuiltAssembly(ComponentInstrumentationParameters instrumentationParameters, BuildOutput output, IBackgroundTaskProcessor backgroundTaskProcessor)
at nCrunch.Core.BuildManagement.BuildEnvironment..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Core.BuildManagement.BuildEnvironment.Build(SnapshotComponent snapshotComponentToBuild, IList`1 referencedComponents, GridClientId gridClientId, IList`1 customEnvironmentVariables, IPlatformBuildExtender extender, Guid taskId, GridClientDescription clientDescription, Boolean extractCoverageReportStructure)
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Remco
#2 Posted : Friday, November 17, 2023 12:39:20 PM(UTC)
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Hi, thanks for sharing this issue.

I've reproduced it as described and will update you when we have a solution available.
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Remco
#3 Posted : Wednesday, November 22, 2023 2:46:50 AM(UTC)
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anderswg
#4 Posted : Wednesday, November 22, 2023 7:58:24 AM(UTC)
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Hi, and thanks for the build.
Im getting another exception in the same example now

Quote:
NCrunch has encountered an internal error: System.Exception: nCrunch.Compiler.StaticManipulation.CilTypeHashException: Unable to hash type 'Code' due to exception: System.NotSupportedException: Unknown element type: Var
at nCrunch.Compiler.Cil.CustomAttributes.CilAttributeArgument.GetImpactHash()
at nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashCustomAttribute(FNV64& hash, CilCustomAttribute customAttribute)
at nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashType(FNV64& hash, CilTypeDefinition type)
at nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
at nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
at nCrunch.Compiler.CilProcessingTasks.CilMethodHashingTask..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.()
at nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.ProcessTasks(Int32 backgroundThreadsAllowed)
at nCrunch.Compiler.RemoteBuildRunner.(ComponentInstrumentationParameters , BuildOutput , IBackgroundTaskProcessor )
at nCrunch.Compiler.RemoteBuildRunner.PerformPostProcessingOfBuiltAssembly(ComponentInstrumentationParameters instrumentationParameters, BuildOutput output, IBackgroundTaskProcessor backgroundTaskProcessor)
at nCrunch.Core.BuildManagement.BuildEnvironment..()
at nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
at nCrunch.Core.BuildManagement.BuildEnvironment.Build(SnapshotComponent snapshotComponentToBuild, IList`1 referencedComponents, GridClientId gridClientId, IList`1 customEnvironmentVariables, IPlatformBuildExtender extender, Guid taskId, GridClientDescription clientDescription, Boolean extractCoverageReportStructure)
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Remco
#5 Posted : Wednesday, November 22, 2023 11:32:23 PM(UTC)
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anderswg
#6 Posted : Thursday, November 23, 2023 9:52:03 AM(UTC)
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Hi, this works now

Thanks again
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Remco on 11/23/2023(UTC)
jxnnik
#7 Posted : Monday, January 22, 2024 12:42:11 PM(UTC)
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Hi together,

i've tried the provided version 4.19.0.8 in VS2022 but it still does not seem to work.

Here is a minimum example for reproducing the issue (same for .NET7 / 8):

Code:
[AttributeUsage(AttributeTargets.Property)]
public sealed class GenericAttribute<T> : Attribute
{
    public GenericAttribute(T instance)
    {
        Instance = instance;
    }
    
    public T Instance { get; set; }
}

public class TestClass
{

    [Generic<string>(@"asdf")]
    public string Test { get; set; }
}


This leads to the following stack trace:

Quote:
NCrunch has encountered an internal error: System.Exception: nCrunch.Compiler.StaticManipulation.CilTypeHashException: Unable to hash type 'NcrunchTest.TestClass' due to exception: nCrunch.Compiler.StaticManipulation.CilHashException: Unable to hash method 'System.String NcrunchTest.TestClass::get_Test()' due to exception: System.NotSupportedException: Generic parameter number 97 could not be resolved in type signature: NcrunchTest.GenericAttribute`1[[System.String, System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]]
bei nCrunch.Compiler.Cil.CustomAttributes.CilAttributeArgument.get_SizeInBytes()
bei nCrunch.Compiler.Cil.CustomAttributes.CilCustomAttributeValue.get_NamedArguments()
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashCustomAttribute(FNV64& hash, CilCustomAttribute customAttribute)
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.(FNV64& , CilMethodDefinition )
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashMethod(CilMethodDefinition method, Int32 stackSize)
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashMethod(CilMethodDefinition method, Int32 stackSize)
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.(Boolean , ClassMethodData , Dictionary`2 , CilTypeDefinition , FNV64& , CilMethodDefinition )
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
bei nCrunch.Compiler.CilProcessingTasks.CilMethodHashingTask..()
bei nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
bei nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.()
bei nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.ProcessTasks(Int32 backgroundThreadsAllowed)
bei nCrunch.Compiler.RemoteBuildRunner.(ComponentInstrumentationParameters , BuildOutput , IBackgroundTaskProcessor )
bei nCrunch.Compiler.RemoteBuildRunner.PerformPostProcessingOfBuiltAssembly(ComponentInstrumentationParameters instrumentationParameters, BuildOutput output, IBackgroundTaskProcessor backgroundTaskProcessor)
bei nCrunch.Core.BuildManagement.BuildEnvironment..()
bei nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
bei nCrunch.Core.BuildManagement.BuildEnvironment.Build(SnapshotComponent snapshotComponentToBuild, IList`1 referencedComponents, GridClientId gridClientId, IList`1 customEnvironmentVariables, IPlatformBuildExtender extender, Guid taskId, GridClientDescription clientDescription, Boolean extractCoverageReportStructure)


I hope this will help you to investigate the issue.

EDIT: I think this issue only appears with reference types as generic arguments. When working with value types only, everything works fine.
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NeilMacMullen
#8 Posted : Monday, January 22, 2024 3:53:03 PM(UTC)
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Unfortunately we're also experiencing this issue (still present with 4.19.08, VS2022).
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Remco
#9 Posted : Monday, January 22, 2024 10:56:32 PM(UTC)
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Thanks for reporting this. I'll take a look and will get back to you.
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Remco
#10 Posted : Tuesday, January 23, 2024 7:24:26 AM(UTC)
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jxnnik on 1/23/2024(UTC)
jxnnik
#11 Posted : Tuesday, January 23, 2024 8:35:35 AM(UTC)
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Thank you, that works for the basic example I provided!

However, in the acutal project the build still fails. I've included a new minimum example that still gives the same exception, when a generic constructor parameter is not the first argument.

This does work:
Code:
[AttributeUsage(AttributeTargets.Property)]
public sealed class GenericAttribute<T> : Attribute
{
    public GenericAttribute(T instance, string str1, string str2)
    {
        Instance = instance;
    }
    
    public T Instance { get; set; }
}

public class TestClass
{

    [Generic<string>("x", "y", "z")]
    public string Test { get; set; }
}


This does not work:
Code:
[AttributeUsage(AttributeTargets.Property)]
public sealed class GenericAttribute<T> : Attribute
{
    public GenericAttribute(string str1, string str2, T instance)
    {
        Instance = instance;
    }
    
    public T Instance { get; set; }
}

public class TestClass
{

    [Generic<string>("x", "y", "z")]
    public string Test { get; set; }
}


Quote:
NCrunch has encountered an internal error: System.Exception: nCrunch.Compiler.StaticManipulation.CilTypeHashException: Unable to hash type 'NcrunchTest.TestClass' due to exception: nCrunch.Compiler.StaticManipulation.CilHashException: Unable to hash method 'System.String NcrunchTest.TestClass::get_Test()' due to exception: System.NotSupportedException: Generic parameter number 2 could not be resolved in type signature: NcrunchTest.GenericAttribute`1[[System.String, System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]]
bei nCrunch.Compiler.Cil.CustomAttributes.CilAttributeArgument.()
bei nCrunch.Compiler.Cil.CustomAttributes.CilAttributeArgument.get_SizeInBytes()
bei nCrunch.Compiler.Cil.CustomAttributes.CilCustomAttributeValue.get_NamedArguments()
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashCustomAttribute(FNV64& hash, CilCustomAttribute customAttribute)
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.(FNV64& , CilMethodDefinition )
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashMethod(CilMethodDefinition method, Int32 stackSize)
bei nCrunch.Compiler.StaticManipulation.CilMethodHashGenerator.HashMethod(CilMethodDefinition method, Int32 stackSize)
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.(Boolean , ClassMethodData , Dictionary`2 , CilTypeDefinition , FNV64& , CilMethodDefinition )
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
bei nCrunch.Compiler.StaticManipulation.BuiltCilAssembly.ExtractClassMethodData(TestFrameworkDescription[] applicableTestFrameworks, IDictionary`2 codeFileIDsByForegroundFilePath, Boolean storeImpactHashes)
bei nCrunch.Compiler.CilProcessingTasks.CilMethodHashingTask..()
bei nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
bei nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.()
bei nCrunch.Compiler.CilProcessingTasks.ConcurrentCilTaskProcessor.ProcessTasks(Int32 backgroundThreadsAllowed)
bei nCrunch.Compiler.RemoteBuildRunner.(ComponentInstrumentationParameters , BuildOutput , IBackgroundTaskProcessor )
bei nCrunch.Compiler.RemoteBuildRunner.PerformPostProcessingOfBuiltAssembly(ComponentInstrumentationParameters instrumentationParameters, BuildOutput output, IBackgroundTaskProcessor backgroundTaskProcessor)
bei nCrunch.Core.BuildManagement.BuildEnvironment..()
bei nCrunch.Common.PerformanceTracking.PerfTracker.TrackActivity(String name, Action activity)
bei nCrunch.Core.BuildManagement.BuildEnvironment.Build(SnapshotComponent snapshotComponentToBuild, IList`1 referencedComponents, GridClientId gridClientId, IList`1 customEnvironmentVariables, IPlatformBuildExtender extender, Guid taskId, GridClientDescription clientDescription, Boolean extractCoverageReportStructure)
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Remco
#12 Posted : Tuesday, January 23, 2024 12:30:10 PM(UTC)
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1 user thanked Remco for this useful post.
jxnnik on 1/23/2024(UTC)
jxnnik
#13 Posted : Tuesday, January 23, 2024 1:04:23 PM(UTC)
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That fixed the problem! Thank you very much.
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1 user thanked jxnnik for this useful post.
Remco on 1/23/2024(UTC)
NeilMacMullen
#14 Posted : Thursday, January 25, 2024 11:22:04 AM(UTC)
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Great job - thanks !
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