"Internal error in the C# compiler" when try to evaluate statement in Watch\Immediate window

Version Used: Microsoft Visual Studio Enterprise 2017 Version 15.0.26228.9 D15RTWSVC Microsoft .NET Framework Version 4.6.01586

Project target framework: .NETCoreApp 1.1 .NET Framework 4.5.2

Steps to Reproduce:

1. Paste the following methods:

    class Program
    {
        static void M(out int x) { x = 10; }

        static void Main(string[] args)
        {
        }
    }

1. Run the program and put a break point in the start of method “Main”

2. When break point hit, paste the following statement in Watch window or in the Immediate window:

new Func<int>(delegate { int x; var y = new Func<int>(() => { M(out x); return 1; }).Invoke(); return y; }).Invoke() 

Expected Behavior: “1” will printed

Actual Behavior: “Internal error in the C# compiler” printed

StackTrace: “The given key was not present in the dictionary.”

>	mscorlib.dll!System.Collections.Generic.Dictionary<System.__Canon, System.__Canon>.this[System.__Canon].get(System.__Canon key)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.RecordVarRead(Microsoft.CodeAnalysis.CSharp.Symbols.LocalSymbol local)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitLocal(Microsoft.CodeAnalysis.CSharp.BoundLocal node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundLocal.Accept(Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor visitor)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpressionCore(Microsoft.CodeAnalysis.CSharp.BoundExpression node, Microsoft.CodeAnalysis.CSharp.CodeGen.ExprContext context)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpression(Microsoft.CodeAnalysis.CSharp.BoundExpression node, Microsoft.CodeAnalysis.CSharp.CodeGen.ExprContext context)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitAssignmentOperator(Microsoft.CodeAnalysis.CSharp.BoundAssignmentOperator node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundAssignmentOperator.Accept(Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor visitor)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpressionCore(Microsoft.CodeAnalysis.CSharp.BoundExpression node, Microsoft.CodeAnalysis.CSharp.CodeGen.ExprContext context)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpressionCoreWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundExpression node, Microsoft.CodeAnalysis.CSharp.CodeGen.ExprContext context)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpression(Microsoft.CodeAnalysis.CSharp.BoundExpression node, Microsoft.CodeAnalysis.CSharp.CodeGen.ExprContext context)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitExpressionStatement(Microsoft.CodeAnalysis.CSharp.BoundExpressionStatement node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundExpressionStatement.Accept(Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor visitor)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitStatement(Microsoft.CodeAnalysis.CSharp.BoundNode node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.Visit(Microsoft.CodeAnalysis.CSharp.BoundNode node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriter.DoVisitList<Microsoft.CodeAnalysis.CSharp.BoundStatement>(System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.CSharp.BoundStatement> list)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriter.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.BoundBlock.Accept(Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor visitor)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.VisitStatement(Microsoft.CodeAnalysis.CSharp.BoundNode node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.Visit(Microsoft.CodeAnalysis.CSharp.BoundNode node)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.StackOptimizerPass1.Analyze(Microsoft.CodeAnalysis.CSharp.BoundNode node, System.Collections.Generic.Dictionary<Microsoft.CodeAnalysis.CSharp.Symbols.LocalSymbol, Microsoft.CodeAnalysis.CSharp.CodeGen.LocalDefUseInfo> locals, bool debugFriendly)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.Optimizer.Optimize(Microsoft.CodeAnalysis.CSharp.BoundStatement src, bool debugFriendly, out System.Collections.Generic.HashSet<Microsoft.CodeAnalysis.CSharp.Symbols.LocalSymbol> stackLocals)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CodeGen.CodeGenerator.CodeGenerator(Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol method, Microsoft.CodeAnalysis.CSharp.BoundStatement boundBody, Microsoft.CodeAnalysis.CodeGen.ILBuilder builder, Microsoft.CodeAnalysis.CSharp.Emit.PEModuleBuilder moduleBuilder, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, Microsoft.CodeAnalysis.OptimizationLevel optimizations, bool emittingPdb)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.MethodCompiler.GenerateMethodBody(Microsoft.CodeAnalysis.CSharp.Emit.PEModuleBuilder moduleBuilder, Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol method, int methodOrdinal, Microsoft.CodeAnalysis.CSharp.BoundStatement block, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.CodeGen.LambdaDebugInfo> lambdaDebugInfo, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.CodeGen.ClosureDebugInfo> closureDebugInfo, Microsoft.CodeAnalysis.CSharp.StateMachineTypeSymbol stateMachineTypeOpt, Microsoft.CodeAnalysis.CodeGen.VariableSlotAllocator variableSlotAllocatorOpt, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, Microsoft.CodeAnalysis.CodeGen.DebugDocumentProvider debugDocumentProvider, Microsoft.CodeAnalysis.CSharp.ImportChain importChainOpt, bool emittingPdb, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.CodeGen.SourceSpan> dynamicAnalysisSpans)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileSynthesizedMethods(Microsoft.CodeAnalysis.CSharp.TypeCompilationState compilationState)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileSynthesizedMethods(System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol> additionalTypes, Microsoft.CodeAnalysis.DiagnosticBag diagnostics)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileMethodBodies(Microsoft.CodeAnalysis.CSharp.CSharpCompilation compilation, Microsoft.CodeAnalysis.CSharp.Emit.PEModuleBuilder moduleBeingBuiltOpt, bool generateDebugInfo, bool hasDeclarationErrors, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, System.Predicate<Microsoft.CodeAnalysis.CSharp.Symbol> filterOpt, System.Threading.CancellationToken cancellationToken)	Unknown
 	Microsoft.CodeAnalysis.CSharp.dll!Microsoft.CodeAnalysis.CSharp.CSharpCompilation.CompileMethods(Microsoft.CodeAnalysis.Emit.CommonPEModuleBuilder moduleBuilder, bool emittingPdb, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, System.Predicate<Microsoft.CodeAnalysis.ISymbol> filterOpt, System.Threading.CancellationToken cancellationToken)	Unknown
 	Microsoft.CodeAnalysis.dll!Microsoft.CodeAnalysis.Compilation.Compile(Microsoft.CodeAnalysis.Emit.CommonPEModuleBuilder moduleBuilder, bool emittingPdb, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, System.Predicate<Microsoft.CodeAnalysis.ISymbol> filterOpt, System.Threading.CancellationToken cancellationToken)	Unknown
 	Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator.CompilationContext.CompileExpression(string typeName, string methodName, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ExpressionEvaluator.Alias> aliases, Microsoft.CodeAnalysis.CodeGen.CompilationTestData testData, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, out Microsoft.CodeAnalysis.ExpressionEvaluator.ResultProperties resultProperties)	Unknown
 	Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.CSharp.ExpressionEvaluator.EvaluationContext.CompileExpression(string expr, Microsoft.VisualStudio.Debugger.Evaluation.DkmEvaluationFlags compilationFlags, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ExpressionEvaluator.Alias> aliases, Microsoft.CodeAnalysis.DiagnosticBag diagnostics, out Microsoft.CodeAnalysis.ExpressionEvaluator.ResultProperties resultProperties, Microsoft.CodeAnalysis.CodeGen.CompilationTestData testData)	Unknown
 	Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.Microsoft.VisualStudio.Debugger.ComponentInterfaces.IDkmClrExpressionCompiler.CompileExpression.AnonymousMethod__1(Microsoft.CodeAnalysis.ExpressionEvaluator.EvaluationContextBase context, Microsoft.CodeAnalysis.DiagnosticBag diagnostics)	Unknown
 	Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileWithRetry<Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileExpressionResult>(System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ExpressionEvaluator.MetadataBlock> metadataBlocks, Microsoft.CodeAnalysis.DiagnosticFormatter formatter, Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CreateContextDelegate createContext, Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileDelegate<Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileExpressionResult> compile, Microsoft.CodeAnalysis.ExpressionEvaluator.DkmUtilities.GetMetadataBytesPtrFunction getMetaDataBytesPtr, out string errorMessage)	Unknown
 	Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileWithRetry<Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileExpressionResult>(Microsoft.VisualStudio.Debugger.Clr.DkmClrModuleInstance moduleInstance, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.ExpressionEvaluator.MetadataBlock> metadataBlocks, Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CreateContextDelegate createContext, Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileDelegate<Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.CompileExpressionResult> compile, out string errorMessage)	Unknown
 	Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.dll!Microsoft.CodeAnalysis.ExpressionEvaluator.ExpressionCompiler.Microsoft.VisualStudio.Debugger.ComponentInterfaces.IDkmClrExpressionCompiler.CompileExpression(Microsoft.VisualStudio.Debugger.Evaluation.DkmLanguageExpression expression, Microsoft.VisualStudio.Debugger.Clr.DkmClrInstructionAddress instructionAddress, Microsoft.VisualStudio.Debugger.Evaluation.DkmInspectionContext inspectionContext, out string error, out Microsoft.VisualStudio.Debugger.Evaluation.ClrCompilation.DkmCompiledClrInspectionQuery result)	Unknown
 	Microsoft.VisualStudio.Debugger.Engine.dll!Microsoft.VisualStudio.Debugger.EntryPoint.IDkmClrExpressionCompiler_CompileExpression(System.IntPtr pvClassInfo, System.IntPtr Expression, System.IntPtr InstructionAddress, System.IntPtr InspectionContext, ref System.IntPtr Error, ref System.IntPtr Result)	Unknown
 	[Native to Managed Transition]	
 	[Managed to Native Transition]	
 	Microsoft.VisualStudio.Debugger.Engine.dll!Microsoft.VisualStudio.Debugger.Evaluation.DkmLanguageExpression.CompileExpression(Microsoft.VisualStudio.Debugger.Clr.DkmClrInstructionAddress InstructionAddress, Microsoft.VisualStudio.Debugger.Evaluation.DkmInspectionContext InspectionContext, out string Error, out Microsoft.VisualStudio.Debugger.Evaluation.ClrCompilation.DkmCompiledClrInspectionQuery Result)	Unknown
 	vsdebugeng.manimpl.dll!VSDebugEngine.ManagedEE.EntryPoint.Microsoft.VisualStudio.Debugger.ComponentInterfaces.IDkmLanguageExpressionEvaluator.EvaluateExpression(Microsoft.VisualStudio.Debugger.Evaluation.DkmInspectionContext inspectionContext, Microsoft.VisualStudio.Debugger.DkmWorkList workList, Microsoft.VisualStudio.Debugger.Evaluation.DkmLanguageExpression expression, Microsoft.VisualStudio.Debugger.CallStack.DkmStackWalkFrame stackFrame, Microsoft.VisualStudio.Debugger.DkmCompletionRoutine<Microsoft.VisualStudio.Debugger.Evaluation.DkmEvaluateExpressionAsyncResult> completionRoutine)	Unknown
 	Microsoft.VisualStudio.Debugger.Engine.dll!Microsoft.VisualStudio.Debugger.EntryPoint.IDkmLanguageExpressionEvaluator_EvaluateExpression(System.IntPtr pvClassInfo, System.IntPtr InspectionContext, System.IntPtr WorkList, System.IntPtr Expression, System.IntPtr StackFrame, System.IntPtr CompletionRoutine)	Unknown