Test failure: Microsoft.Gen.OptionsValidation.Test.EmitterTests.TestEmitter

[v-wenyuxu]

Failed in: runtime-coreclr libraries-jitstress 20241124.1

Failed tests:

net10.0-windows-Release-x86-disabler2r-Windows.10.Amd64.Open
    - Microsoft.Gen.OptionsValidation.Test.EmitterTests.TestEmitter
net10.0-windows-Release-x86-no_tiered_compilation-Windows.10.Amd64.Open
    - Microsoft.Gen.OptionsValidation.Test.EmitterTests.TestEmitter
net10.0-windows-Release-x86-tailcallstress-Windows.10.Amd64.Open
    - Microsoft.Gen.OptionsValidation.Test.EmitterTests.TestEmitter

Error message:

 Assert.Empty() Failure: Collection was not empty
Collection: [warning CS8785: Generator 'OptionsValidatorGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'NullReferenceException' with message 'Object reference not set to an instance of an object.'.
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol.ToNameKeyedDictionary(ImmutableArray`1 symbols)
   at Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol.MakeAllMembers(BindingDiagnosticBag diagnostics)
   at Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol.GetMembersByNameSlow()
   at Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol.GetMembersByName()
   at Microsoft.CodeAnalysis.CSharp.Symbols.SourceMemberContainerTypeSymbol.GetMembers(String name)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredMember(NamespaceOrTypeSymbol container, TextSpan declarationSpan, Boolean isKnownToBeANamespace, String name)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredNamedType(CSharpSyntaxNode declarationSyntax, String name)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredType(BaseTypeDeclarationSyntax declarationSyntax)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredNamespaceOrType(CSharpSyntaxNode declarationSyntax)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredTypeMemberContainer(CSharpSyntaxNode memberDeclaration)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredNamedType(CSharpSyntaxNode declarationSyntax, String name)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredType(BaseTypeDeclarationSyntax declarationSyntax)
   at Microsoft.CodeAnalysis.CSharp.SyntaxTreeSemanticModel.GetDeclaredSymbol(BaseTypeDeclarationSyntax declarationSyntax, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.CSharp.CSharpSemanticModel.GetDeclaredSymbolCore(SyntaxNode node, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SyntaxValueProvider.<>c__DisplayClass10_0`1.<ForAttributeWithMetadataName>b__0(ValueTuple`2 tuple, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.TransformNode`2.UpdateStateTable(Builder builder, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
-----
]

Stack trace:

   at Microsoft.Gen.OptionsValidation.Test.EmitterTests.TestEmitter() in /_/src/libraries/Microsoft.Extensions.Options/tests/SourceGenerationTests/EmitterTests.cs:line 46
--- End of stack trace from previous location ---

[dotnet-policy-service]

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

[amanasifkhalid]

cc @dotnet/jit-contrib

[JulieLeeMSFT]

@amanasifkhalid, thanks for triaging the test failures. Please take a look at this x64 emitter related issue.

[amanasifkhalid]

I'm unable to reproduce this with a mainline build, and this hasn't failed in CI recently:

Closing this for now.