---------------------------
Assertion Failed: Abort=Quit, Retry=Debug, Ignore=Continue
---------------------------




   at Microsoft.CodeAnalysis.CSharp.CSharpSemanticModel.GetImportScopesCore(Int32 position, CancellationToken cancellationToken) in D:\R3\src\Compilers\CSharp\Portable\Compilation\CSharpSemanticModel.cs:line 5304

   at Microsoft.CodeAnalysis.SemanticModel.GetImportScopes(Int32 position, CancellationToken cancellationToken) in D:\R3\src\Compilers\Core\Portable\Compilation\SemanticModel.cs:line 782

   at Microsoft.CodeAnalysis.CSharp.Diagnostics.SimplifyTypeNames.TypeSyntaxSimplifierWalker.AddAliasedNames(CompilationUnitSyntax compilationUnit) in D:\R3\src\Features\CSharp\Portable\Diagnostics\Analyzers\TypeSyntaxSimplifierWalker.cs:line 97

   at Microsoft.CodeAnalysis.CSharp.Diagnostics.SimplifyTypeNames.TypeSyntaxSimplifierWalker..ctor(CSharpSimplifyTypeNamesDiagnosticAnalyzer analyzer, SemanticModel semanticModel, CSharpSimplifierOptions options, SimpleIntervalTree`2 ignoredSpans, CancellationToken cancellationToken) in D:\R3\src\Features\CSharp\Portable\Diagnostics\Analyzers\TypeSyntaxSimplifierWal......

<truncated>
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Abort   Retry   Ignore   
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