Error: System.ArgumentException: Identifier is not CLS-compliant. (Parameter 'ident')

[theolivenbaum]

Description

Cross-post from this bug, which is still active: dotnet/interactive#1881

Reproduction Steps

See: dotnet/interactive#1881

Expected behavior

XmlSerializer works on runtime-created assemblies

Actual behavior

Exception:

Error: System.ArgumentException: Identifier 'Submission#8' is not CLS-compliant. (Parameter 'ident')
at System.Xml.Serialization.CodeIdentifier.CheckValidIdentifier(String ident)
at System.Xml.Serialization.CodeIdentifier.EscapeKeywords(String identifier, StringBuilder sb)
at System.Xml.Serialization.CodeIdentifier.GetCSharpName(Type t, Type[] parameters, Int32 index, StringBuilder sb)
at System.Xml.Serialization.CodeIdentifier.GetCSharpName(Type t, Type[] parameters, Int32 index, StringBuilder sb)
at System.Xml.Serialization.CodeIdentifier.GetCSharpName(Type t)
at System.Xml.Serialization.TypeDesc.get_CSharpName()
at System.Xml.Serialization.SourceInfo.CastTo(TypeDesc td)
at System.Xml.Serialization.XmlSerializationWriterILGen.WriteElements(SourceInfo source, String enumSource, ElementAccessor[] elements, TextAccessor text, ChoiceIdentifierAccessor choice, String arrayName, Boolean writeAccessors, Boolean isNullable)
at System.Xml.Serialization.XmlSerializationWriterILGen.WriteMember(SourceInfo source, String choiceSource, ElementAccessor[] elements, TextAccessor text, ChoiceIdentifierAccessor choice, TypeDesc memberTypeDesc, Boolean writeAccessors)
at System.Xml.Serialization.XmlSerializationWriterILGen.GenerateTypeElement(XmlTypeMapping xmlTypeMapping)
at System.Xml.Serialization.XmlSerializationWriterILGen.GenerateElement(XmlMapping xmlMapping)
at System.Xml.Serialization.TempAssembly.GenerateRefEmitAssembly(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace)
at System.Xml.Serialization.TempAssembly..ctor(XmlMapping[] xmlMappings, Type[] types, String defaultNamespace, String location)
at System.Xml.Serialization.XmlSerializer.GenerateTempAssembly(XmlMapping xmlMapping, Type type, String defaultNamespace, String location)
at System.Xml.Serialization.XmlSerializer..ctor(Type type, String defaultNamespace)
at System.Xml.Serialization.XmlSerializer..ctor(Type type)
at Submission#8.<<Initialize>>d__0.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.CodeAnalysis.Scripting.ScriptExecutionState.RunSubmissionsAsync[TResult](ImmutableArray`1 precedingExecutors, Func`2 currentExecutor, StrongBox`1 exceptionHolderOpt, Func`2 catchExceptionOpt, CancellationToken cancellationToken)

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response