Source generator tests failing with AV in Roslyn

[kunalspathak]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=693513
Build error leg or test failing: System.Text.RegularExpressions.Tests.RegexPcre2Tests.IsMatchTests
Pull request: #102903

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": [ "System.AccessViolationException", "Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CompileMethods" ],
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=693513
Error message validated: [System.AccessViolationException Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CompileMethods]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/31/2024 5:13:05 PM UTC

Report

Build	Definition	Test	Pull Request
713808	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution
713038	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#103706
709265	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution
705911	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#103381
693513	dotnet/runtime	System.Text.RegularExpressions.Tests.RegexPcre2Tests.IsMatchTests	#102903

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	1	5

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-system-text-regularexpressions
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

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

[jkotas]

Stacktrace of the failure:

      System.AccessViolationException : Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
      Stack Trace:
           at Microsoft.CodeAnalysis.CSharp.Binder.BindConstructorInitializerCoreContinued(Boolean found, ArgumentListSyntax initializerArgumentListOpt, MethodSymbol constructor, AnalyzedArguments analyzedArguments, TypeSymbol constructorReturnType, NamedTypeSymbol initializerType, Boolean isBaseConstructorInitializer, CSharpSyntaxNode nonNullSyntax, Location errorLocation, Boolean enableCallerInfo, MemberResolutionResult`1 memberResolutionResult, ImmutableArray`1 candidateConstructors, CompoundUseSiteInfo`1& overloadResolutionUseSiteInfo, BindingDiagnosticBag diagnostics)
           at Microsoft.CodeAnalysis.CSharp.Binder.BindConstructorInitializerCore(ArgumentListSyntax initializerArgumentListOpt, MethodSymbol constructor, BindingDiagnosticBag diagnostics)
           at Microsoft.CodeAnalysis.CSharp.Binder.BindImplicitConstructorInitializer(MethodSymbol constructor, BindingDiagnosticBag diagnostics, CSharpCompilation compilation)
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.BindMethodBody(MethodSymbol method, TypeCompilationState compilationState, BindingDiagnosticBag diagnostics, Boolean includeInitializersInBody, BoundNode initializersBody, Boolean reportNullableDiagnostics, ImportChain& importChain, Boolean& originalBodyNested, Boolean& prependedDefaultValueTypeConstructorInitializer, InitialState& forSemanticModel)
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileMethod(MethodSymbol methodSymbol, Int32 methodOrdinal, ProcessedFieldInitializers& processedInitializers, SynthesizedSubmissionFields previousSubmissionFields, TypeCompilationState compilationState)
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileNamedType(NamedTypeSymbol containingType)
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.<>c__DisplayClass25_0.<CompileNamedTypeAsync>b__0()
        /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs(264,0): at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
        --- End of stack trace from previous location ---
        /_/src/libraries/System.Private.CoreLib/src/System/Threading/ExecutionContext.cs(289,0): at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
        /_/src/libraries/System.Private.CoreLib/src/System/Threading/Tasks/Task.cs(2346,0): at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
        --- End of stack trace from previous location ---
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.WaitForWorkers()
           at Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileMethodBodies(CSharpCompilation compilation, PEModuleBuilder moduleBeingBuiltOpt, Boolean emittingPdb, Boolean hasDeclarationErrors, Boolean emitMethodBodies, BindingDiagnosticBag diagnostics, Predicate`1 filterOpt, CancellationToken cancellationToken)
           at Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CompileMethods(CommonPEModuleBuilder moduleBuilder, Boolean emittingPdb, DiagnosticBag diagnostics, Predicate`1 filterOpt, CancellationToken cancellationToken)
           at Microsoft.CodeAnalysis.Compilation.Emit(Stream peStream, Stream metadataPEStream, Stream pdbStream, Stream xmlDocumentationStream, Stream win32Resources, IEnumerable`1 manifestResources, EmitOptions options, IMethodSymbol debugEntryPoint, Stream sourceLinkStream, IEnumerable`1 embeddedTexts, RebuildData rebuildData, CompilationTestData testData, CancellationToken cancellationToken)
           at Microsoft.CodeAnalysis.Compilation.Emit(Stream peStream, Stream pdbStream, Stream xmlDocumentationStream, Stream win32Resources, IEnumerable`1 manifestResources, EmitOptions options, IMethodSymbol debugEntryPoint, Stream sourceLinkStream, IEnumerable`1 embeddedTexts, Stream metadataPEStream, RebuildData rebuildData, CancellationToken cancellationToken)
           at Microsoft.CodeAnalysis.Compilation.Emit(Stream peStream, Stream pdbStream, Stream xmlDocumentationStream, Stream win32Resources, IEnumerable`1 manifestResources, EmitOptions options, IMethodSymbol debugEntryPoint, Stream sourceLinkStream, IEnumerable`1 embeddedTexts, Stream metadataPEStream, CancellationToken cancellationToken)
        /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/RegexGeneratorHelper.netcoreapp.cs(227,0): at System.Text.RegularExpressions.Tests.RegexGeneratorHelper.SourceGenRegexAsync(ValueTuple`4[] regexes, CancellationToken cancellationToken)
        /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Tests.Common.cs(147,0): at System.Text.RegularExpressions.Tests.RegexHelpers.GetRegexesAsync(RegexEngine engine, ValueTuple`4[] regexes)
        /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Tests.Common.cs(135,0): at System.Text.RegularExpressions.Tests.RegexHelpers.GetRegexes(RegexEngine engine, ValueTuple`4[] regexes)
        /_/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/RegexPcreTests.cs(22,0): at System.Text.RegularExpressions.Tests.RegexPcre2Tests.PcreTestData()+MoveNext()
        /_/src/libraries/System.Linq/src/System/Linq/Select.cs(131,0): at System.Linq.Enumerable.IEnumerableSelectIterator`2.MoveNext()

[jkotas]

The CI failure is missing crash dump. It is not actionable. cc @JulieLeeMSFT

[JulieLeeMSFT]

@jkotas, Juan looked into it. AccessViolationException shows that xunit is suppressing the exception making the process not crash. So, we won't get a crash dump in this case.

The CI failure is missing crash dump. It is not actionable. cc @JulieLeeMSFT