c# - 如何使用VS2019解决此MSB6006 csc.exe错误(-2146232797)？

Question

我刚刚将VS2019社区版本更新为版本16.7.2。我的项目开始因以下错误而无法构建(也许是链接步骤？)(以前构建得很好，我认为是在v16.6.something上):

> Severity  Code    Description Project File    Line    Suppression State
> Error MSB6006 "csc.exe" exited with code
> -2146232797.  MyProject.Server    C:\Program Files\dotnet\sdk\3.1.401\Sdks\Microsoft.NET.Sdk.Razor\build\netstandard2.0\Microsoft.NET.Sdk.Razor.Component.targets 179

我真的不知道怎么回事。接下来我要看什么？我应该在其他地方问这个问题吗？
我在Windows事件日志中找到了这个。似乎是一个调用堆栈:

> Application: csc.exe Framework Version: v4.0.30319 Description: The
> application requested process termination through
> System.Environment.FailFast(string message). Message:
> System.NullReferenceException: Object reference not set to an instance
> of an object. at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder.BasicBlock.ShortenBranches(Int32&
> delta) at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder.ComputeOffsetsAndAdjustBranches()
> at Microsoft.CodeAnalysis.CodeGen.ILBuilder.RealizeBlocks() at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder.Realize() at
> Microsoft.CodeAnalysis.CSharp.CodeGen.CodeGenerator.GenerateImpl() at
> Microsoft.CodeAnalysis.CSharp.MethodCompiler.GenerateMethodBody(PEModuleBuilder
> moduleBuilder, MethodSymbol method, Int32 methodOrdinal,
> BoundStatement block, ImmutableArray`1 lambdaDebugInfo,
> ImmutableArray`1 closureDebugInfo, StateMachineTypeSymbol
> stateMachineTypeOpt, VariableSlotAllocator variableSlotAllocatorOpt,
> DiagnosticBag diagnostics, DebugDocumentProvider
> debugDocumentProvider, ImportChain importChainOpt, Boolean
> emittingPdb, Boolean emitTestCoverageData, ImmutableArray`1
> dynamicAnalysisSpans, AsyncForwardEntryPoint entryPointOpt) 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.<CompileNamedTypeAsync>b__0()
> Stack: at System.Environment.FailFast(System.String, System.Exception)
> at Microsoft.CodeAnalysis.FailFast.OnFatalException(System.Exception)
> at
> Microsoft.CodeAnalysis.FatalError.ReportUnlessCanceled(System.Exception)
> at
> Microsoft.CodeAnalysis.CSharp.MethodCompiler+<>c__DisplayClass22_0.<CompileNamedTypeAsync>b__0()
> at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder+BasicBlock.ShortenBranches(Int32
> ByRef) at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder.ComputeOffsetsAndAdjustBranches()
> at Microsoft.CodeAnalysis.CodeGen.ILBuilder.RealizeBlocks() at
> Microsoft.CodeAnalysis.CodeGen.ILBuilder.Realize() at
> Microsoft.CodeAnalysis.CSharp.CodeGen.CodeGenerator.GenerateImpl() at
> Microsoft.CodeAnalysis.CSharp.MethodCompiler.GenerateMethodBody(Microsoft.CodeAnalysis.CSharp.Emit.PEModuleBuilder,
> Microsoft.CodeAnalysis.CSharp.Symbols.MethodSymbol, Int32,
> Microsoft.CodeAnalysis.CSharp.BoundStatement,
> System.Collections.Immutable.ImmutableArray`1<Microsoft.CodeAnalysis.CodeGen.LambdaDebugInfo>,
> System.Collections.Immutable.ImmutableArray`1<Microsoft.CodeAnalysis.CodeGen.ClosureDebugInfo>,
> Microsoft.CodeAnalysis.CSharp.StateMachineTypeSymbol,
> Microsoft.CodeAnalysis.CodeGen.VariableSlotAllocator,
> Microsoft.CodeAnalysis.DiagnosticBag,
> Microsoft.CodeAnalysis.CodeGen.DebugDocumentProvider,
> Microsoft.CodeAnalysis.CSharp.ImportChain, Boolean, Boolean,
> System.Collections.Immutable.ImmutableArray`1<Microsoft.CodeAnalysis.CodeGen.SourceSpan>,
> AsyncForwardEntryPoint) 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.<CompileNamedTypeAsync>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()

Answer 1

堆栈跟踪显示System.NullReferenceException: Object reference not set to an instance of an object.您是否尝试在VS中本地运行该应用程序并对其进行调试？