Roslyn: "csc.exe" exited with code -2146232797

Created on 17 Sep 2019  路  15Comments  路  Source: dotnet/roslyn

Version Used:
16.3.0 Preview 1
16.3.0 Preview 2
16.3.0 Preview 3
16.3.0 Preview 4

Steps to Reproduce:

I can't tell, the only thing I see in VS is a one-line error message in build output:
C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Current\Bin\Roslyn\Microsoft.CSharp.Core.targets(59,5): error MSB6006: "csc.exe" exited with code -2146232797.

At least I found this in the event log which should be related:

Application: csc.exe
Framework Version: v4.0.30319
Description: The application requested process termination through System.Environment.FailFast(string message).
Message: System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.IsCapturedInLocalFunction(Int32 slot)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.GetCapturedBitmask(BitVector& state)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.RecordCapturedChanges(BitVector& oldState, BitVector& newState)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.RecordChangedVars(LocalState& oldWrites, LocalState& newWrites, BitVector& oldReads, BitVector& newReads)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitLocalFunctionStatement(BoundLocalFunctionStatement localFunc)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitWithStackGuard(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitAlways(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(BoundBlock block)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(BoundBlock node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitWithStackGuard(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitAlways(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitForEachStatement(BoundForEachStatement node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitWithStackGuard(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitAlways(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(BoundBlock block)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(BoundBlock node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitWithStackGuard(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitAlways(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(BoundBlock block)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(BoundBlock node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitWithStackGuard(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.VisitAlways(BoundNode node)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.Scan(Boolean& badRegion)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.Scan(Boolean& badRegion)
   at Microsoft.CodeAnalysis.CSharp.UnassignedFieldsWalker.Scan(Boolean& badRegion)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1.Analyze(Boolean& badRegion, Optional`1 initialState)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.Analyze(Boolean& badRegion, DiagnosticBag diagnostics)
   at Microsoft.CodeAnalysis.CSharp.UnassignedFieldsWalker.Analyze(CSharpCompilation compilation, MethodSymbol method, BoundNode node, DiagnosticBag diagnostics)
   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__DisplayClass22_0.<CompileNamedTypeAsTask>b__0()
Stack:
   at System.Environment.FailFast(System.String, System.Exception)
   at Microsoft.CodeAnalysis.FatalError.ReportUnlessCanceled(System.Exception)
   at Microsoft.CodeAnalysis.CSharp.MethodCompiler+<>c__DisplayClass22_0.<CompileNamedTypeAsTask>b__0()
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.IsCapturedInLocalFunction(Int32)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.GetCapturedBitmask(Microsoft.CodeAnalysis.BitVector ByRef)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.RecordCapturedChanges(Microsoft.CodeAnalysis.BitVector ByRef, Microsoft.CodeAnalysis.BitVector ByRef)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.RecordChangedVars(LocalState ByRef, LocalState ByRef, Microsoft.CodeAnalysis.BitVector ByRef, Microsoft.CodeAnalysis.BitVector ByRef)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitLocalFunctionStatement(Microsoft.CodeAnalysis.CSharp.BoundLocalFunctionStatement)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitAlways(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitAlways(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitForEachStatement(Microsoft.CodeAnalysis.CSharp.BoundForEachStatement)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitAlways(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitAlways(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitStatementsWithLocalFunctions(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].VisitAlways(Microsoft.CodeAnalysis.CSharp.BoundNode)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].Scan(Boolean ByRef)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.Scan(Boolean ByRef)
   at Microsoft.CodeAnalysis.CSharp.UnassignedFieldsWalker.Scan(Boolean ByRef)
   at Microsoft.CodeAnalysis.CSharp.AbstractFlowPass`1[[Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass+LocalState, Microsoft.CodeAnalysis.CSharp, Version=3.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]].Analyze(Boolean ByRef, Microsoft.CodeAnalysis.Optional`1<LocalState>)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.Analyze(Boolean ByRef, Microsoft.CodeAnalysis.DiagnosticBag)
   at Microsoft.CodeAnalysis.CSharp.UnassignedFieldsWalker.Analyze(Microsoft.CodeAnalysis.CSharp.CSharpCompilation, Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Microsoft.CodeAnalysis.CSharp.BoundNode, Microsoft.CodeAnalysis.DiagnosticBag)
   at Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileMethod(Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Int32, ProcessedFieldInitializers ByRef, Microsoft.CodeAnalysis.CSharp.SynthesizedSubmissionFields, Microsoft.CodeAnalysis.CSharp.TypeCompilationState)
   at Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileNamedType(Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol)
   at Microsoft.CodeAnalysis.CSharp.MethodCompiler+<>c__DisplayClass22_0.<CompileNamedTypeAsTask>b__0()
   at Roslyn.Utilities.UICultureUtilities+<>c__DisplayClass5_0.<WithCurrentUICulture>b__0()
   at System.Threading.Tasks.Task.Execute()
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
   at System.Threading.ThreadPoolWorkQueue.Dispatch()

It's a huge WPF project being part of a huge solution (>130 projects) so I can't give any code. Please give a hint how to narrow this down (or get the jit debugger attached to the failing csc process).

(BTW: There is no problem with the release version of VS2019 16.2.x)

Area-Compilers Bug New Language Feature - Local Functions
Source
picture springy76

All 15 comments

Update: After having applied Troubleshoot Just-In-Time debugging to both the WOW6432Node and the "normal" node (on 64-bit system) I was asked to attach a new VS instance to the crashing csc.exe, and on the call stack I both found a file name of my code and a BoundBlock containing some lines of code in this file.
When I now open this file in VS2019-preview then devenv.exe crashes immediately (asks for a debugger and disappears immediately if I don't attach one).

The problem code looks as following and is placed inside a constructor:

#if DEBUG
foreach ( var value in EnumExtensions.GetAllValues<DispatcherPriority>() )
{
    if ( value == DispatcherPriority.Invalid )
        continue;

    var priority = value;
    void PriorityTest()
    {
        Console.WriteLine("dequeued DispTest-MW {0} {1}", priority, (int)priority);
    }

    _ = this.Dispatcher.InvokeAsync(PriorityTest, priority);
    Console.WriteLine("enqueued DispTest-MW {0} {1}", priority, (int)priority);
}
#endif

The problem goes away when removing the single WriteLine line inside the local function PriorityTest(). Rewriting the code to use an anonymous lambda method for Dispatcher.InvokeAsync() also works.

springy76 picture springy76 on 17 Sep 2019

Tagging @agocke
I was not able to repro by copying the above block of code into a small project and playing around with it in 16.4p2.
The faulty method (IsCapturedInLocalFunction) is small and straightforward, but I was not able to spot the issue from looking at it. Maybe you'll have an idea?

jcouv picture jcouv on 17 Sep 2019

@springy76 I was not able to repro this issue so far.
A possible next step would be for you to capture a crash dump (instructions) and share that with me (an online drive like dropbox would work, my email is [email protected]).
If your project is public, I could also try to check it out and repro that way.

jcouv picture jcouv on 24 Sep 2019

@jcouv (problem still unchanged in 16.3. release) I tried the crash dump instructions, but there just no dump file appears in c:\localdumps. The just-in-time debugger now appears twice per build: Once for VBCScompiler.exe and once for csc.exe. If I ignore both the build just succeeds without errors!?! If I open the problem source file in VS then the just-in-time debugger asks to debug devenv.exe - but no dump file for each of these 3 crashes.

springy76 picture springy76 on 25 Sep 2019

In the event log I just noticed that the callstack for devenv.exe contains one method extra on top (RootSlot):

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.RootSlot(Int32 slot)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.IsCapturedInLocalFunction(Int32 slot)
   at Microsoft.CodeAnalysis.CSharp.DefiniteAssignmentPass.GetCapturedBitmask(BitVector& state)
springy76 picture springy76 on 25 Sep 2019

@jcouv I have the same problem with my solution (vs 16.3). I will try to upload a dump file and email a link to you.

I have sent a dump file to Julien.

Not sure if this is relevant but csc --version gives me Visual C# Compiler version 3.3.1-beta3-19461-02 (2fd12c21). That is kinda odd because I'm not on a preview.

[[GCFrame]]
--
[[HelperMethodFrame_2OBJ] (System.Environment.FailFast)] System.Environment.FailFast(System.String, System.Exception)
Microsoft_CodeAnalysis_ni!Microsoft.CodeAnalysis.FatalError.ReportUnlessCanceled(System.Exception)+5d1a44
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.MethodCompiler+<>c__DisplayClass22_0.b__0()+59
[[HelperMethodFrame_1OBJ]]
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.ConvertConcatExprToString(Microsoft.CodeAnalysis.SyntaxNode, Microsoft.CodeAnalysis.CSharp.BoundExpression)+1c1
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.RewriteStringConcatenation(Microsoft.CodeAnalysis.SyntaxNode, Microsoft.CodeAnalysis.CSharp.BinaryOperatorKind, Microsoft.CodeAnalysis.CSharp.BoundExpression, Microsoft.CodeAnalysis.CSharp.BoundExpression, Microsoft.CodeAnalysis.CSharp.Symbols.TypeSymbol)+45
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.MakeBinaryOperator(Microsoft.CodeAnalysis.CSharp.BoundBinaryOperator, Microsoft.CodeAnalysis.SyntaxNode, Microsoft.CodeAnalysis.CSharp.BinaryOperatorKind, Microsoft.CodeAnalysis.CSharp.BoundExpression, Microsoft.CodeAnalysis.CSharp.BoundExpression, Microsoft.CodeAnalysis.CSharp.Symbols.TypeSymbol, Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Boolean, Boolean, Microsoft.CodeAnalysis.CSharp.BoundUnaryOperator)+58f
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitBinaryOperator(Microsoft.CodeAnalysis.CSharp.BoundBinaryOperator, Microsoft.CodeAnalysis.CSharp.BoundUnaryOperator)+195
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriterWithStackGuard.VisitExpressionWithoutStackGuard(Microsoft.CodeAnalysis.CSharp.BoundExpression)+27
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor.VisitExpressionWithStackGuard(Int32 ByRef, Microsoft.CodeAnalysis.CSharp.BoundExpression)+33
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitExpressionImpl(Microsoft.CodeAnalysis.CSharp.BoundExpression)+49
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriter.DoVisitList[[System.__Canon, mscorlib]](System.Collections.Immutable.ImmutableArray`1)+41
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitObjectCreationExpression(Microsoft.CodeAnalysis.CSharp.BoundObjectCreationExpression)+50
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriterWithStackGuard.VisitExpressionWithoutStackGuard(Microsoft.CodeAnalysis.CSharp.BoundExpression)+27
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor.VisitExpressionWithStackGuard(Microsoft.CodeAnalysis.CSharp.BoundExpression)+22
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeVisitor.VisitExpressionWithStackGuard(Int32 ByRef, Microsoft.CodeAnalysis.CSharp.BoundExpression)+59
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitExpressionImpl(Microsoft.CodeAnalysis.CSharp.BoundExpression)+49
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.BoundTreeRewriter.VisitThrowStatement(Microsoft.CodeAnalysis.CSharp.BoundThrowStatement)+16
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitThrowStatement(Microsoft.CodeAnalysis.CSharp.BoundThrowStatement)+18
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitPossibleUsingDeclaration(Microsoft.CodeAnalysis.CSharp.BoundStatement, System.Collections.Immutable.ImmutableArray`1, Int32, Boolean ByRef)+43
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitStatementSubList(Microsoft.CodeAnalysis.PooledObjects.ArrayBuilder`1, System.Collections.Immutable.ImmutableArray`1, Int32)+58
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.VisitBlock(Microsoft.CodeAnalysis.CSharp.BoundBlock)+50
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.LocalRewriter.Rewrite(Microsoft.CodeAnalysis.CSharp.CSharpCompilation, Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Int32, Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol, Microsoft.CodeAnalysis.CSharp.BoundStatement, Microsoft.CodeAnalysis.CSharp.TypeCompilationState, Microsoft.CodeAnalysis.CSharp.SynthesizedSubmissionFields, Boolean, Boolean, System.Collections.Immutable.ImmutableArray`1 ByRef, Microsoft.CodeAnalysis.CodeGen.DebugDocumentProvider, Microsoft.CodeAnalysis.DiagnosticBag, Boolean ByRef, Boolean ByRef, Boolean ByRef)+291
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.MethodCompiler.LowerBodyOrInitializer(Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Int32, Microsoft.CodeAnalysis.CSharp.BoundStatement, Microsoft.CodeAnalysis.CSharp.SynthesizedSubmissionFields, Microsoft.CodeAnalysis.CSharp.TypeCompilationState, Boolean, Microsoft.CodeAnalysis.CodeGen.DebugDocumentProvider, System.Collections.Immutable.ImmutableArray`1 ByRef, Microsoft.CodeAnalysis.DiagnosticBag, Microsoft.CodeAnalysis.CodeGen.VariableSlotAllocator ByRef, Microsoft.CodeAnalysis.PooledObjects.ArrayBuilder`1, Microsoft.CodeAnalysis.PooledObjects.ArrayBuilder`1, Microsoft.CodeAnalysis.CSharp.StateMachineTypeSymbol ByRef)+e7
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileMethod(Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Int32, ProcessedFieldInitializers ByRef, Microsoft.CodeAnalysis.CSharp.SynthesizedSubmissionFields, Microsoft.CodeAnalysis.CSharp.TypeCompilationState)+66f
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.MethodCompiler.CompileNamedType(Microsoft.CodeAnalysis.CSharp.Symbols.NamedTypeSymbol)+440
Microsoft_CodeAnalysis_CSharp_ni!Microsoft.CodeAnalysis.CSharp.MethodCompiler+<>c__DisplayClass22_0.b__0()+23
Microsoft_CodeAnalysis_ni!Roslyn.Utilities.UICultureUtilities+<>c__DisplayClass5_0.b__0()+3d
mscorlib_ni!System.Threading.Tasks.Task.Execute()+46
mscorlib_ni!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)+163
mscorlib_ni!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)+14
mscorlib_ni!System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)+215
mscorlib_ni!System.Threading.Tasks.Task.ExecuteEntry(Boolean)+73
mscorlib_ni!System.Threading.ThreadPoolWorkQueue.Dispatch()+152
[[DebuggerU2MCatchHandlerFrame]]

My solution contains two nuget packages with the built-in analyzers (AWSSDK.Core and AWSSDK.S3). After adding ExcludeAssets="analyzers" attribute to them I have one part of my solution compiling.

Vertygo picture Vertygo on 25 Sep 2019

@Vertygo looking at the callstacks you have a completely different kind of problem. Effectively exit code -2146232797 just means "failfast has been called".

springy76 picture springy76 on 25 Sep 2019

@springy76 you are probably right. I didn't know that it's actually failfast that returns this exit code. But by examining your callstack it looks like it falls into the same category - csc dies after trying to perform CodeAnalysis. I will move my issue to another ticket if @jcouv doesn't see connection.

Vertygo picture Vertygo on 25 Sep 2019

(I don't know if it really is failfast or just "process died" - but the exit code number already has been used a lot for very different problems: https://github.com/dotnet/roslyn/issues?utf8=%E2%9C%93&q=2146232797 )

springy76 picture springy76 on 25 Sep 2019

@springy76 Here's an alternative: When offered to debug the crash, select the option to debug, then use the "Debug" > "Save Dump As" menu to save a dump file.

jcouv picture jcouv on 25 Sep 2019

@Vertygo's crash is indeed different (different stack trace), so I filed a separate issue for it: https://github.com/dotnet/roslyn/issues/38858

jcouv picture jcouv on 25 Sep 2019
👍1

@jcouv I just mailed you a download link for a csc.exe crashdump.

springy76 picture springy76 on 26 Sep 2019

@jcouv I just de-duped a feedback issue to this bug and there's another dump just in case you need it. (jcouv update: Andy meant to link to issue https://github.com/dotnet/roslyn/issues/38858 instead, the crash on string concat)

agocke picture agocke on 26 Sep 2019

@agocke has an idea what the bug may be. Was probably introduced by allowing constants to be referenced by static local functions.

jcouv picture jcouv on 26 Sep 2019

Thanks for reporting @springy76
The fix was merged into 16.4 preview 3

jcouv picture jcouv on 4 Oct 2019
🎉1
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