使用 PostSharp 4.3.20 编译时出错

Question

当我尝试从 Visual Studio 2015 内部编译时，我收到以下错误跟踪。有没有其他人遇到过这种情况？

Error       Unhandled exception (4.3.20.0, postsharp-net40-x86-srv.exe, CLR 4.0.30319.394271, Release): System.NullReferenceException: Object reference not set to an instance of an object.
   at PostSharp.Sdk.CodeModel.GenericMap.GetGenericParameter(GenericParameterKind kind, Int32 ordinal)
   at PostSharp.Sdk.CodeModel.TypeSignatures.GenericParameterTypeSignature.MapGenericArguments(GenericMap genericMap)
   at PostSharp.Sdk.CodeModel.MethodDefDeclaration.WriteReflectionName(StringBuilder stringBuilder, ReflectionNameOptions options, NameMapper mapper)
   at PostSharp.Sdk.CodeModel.WriteReflectionNameExtensions.GetDisplayName(IWriteReflectionName declaration)
   at PostSharp.Sdk.Extensibility.Licensing.LocalLicenseManager.^BLnBYDPkLE/l(MetadataDeclaration _0, TypeDefDeclaration _1, List`1 _2, List`1 _3, ^hjDNKkMra\+ry _4)
   at PostSharp.Sdk.AspectWeaver.AspectWeaver.^Rb+2eJKK(MetadataDeclaration _0)
   at PostSharp.Sdk.AspectWeaver.AspectWeaverInstance.ProvideAdviceTransformations(AspectWeaverTransformationAdder adder)
   at PostSharp.Sdk.AspectWeaver.AspectWeaverTask.^5t5Tu4zL(AspectWeaverInstance _0)
   at PostSharp.Sdk.AspectWeaver.AspectWeaverTask.^vPCloP06(IMetadataDeclaration _0, AspectWeaverInstance _1)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^lNgKC+Z4(IMetadataDeclaration _0, Func`3 _1)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^RdBVqi\.M.^8/pSq47Q(IMetadataDeclaration _0)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^d+wOzSPF(IMetadataDeclaration _0, Func`2 _1)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^+g+TCqVg(TypeDefDeclaration _0, Func`2 _1, Set`1 _2)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^fJqG(Func`2 _0)
   at PostSharp.Sdk.AspectInfrastructure.StructuredDeclarationDictionary`1.^fJqG(Func`3 _0)
   at PostSharp.Sdk.AspectWeaver.AspectWeaverTask.Execute()
   at PostSharp.Sdk.Extensibility.Project.ExecutePhase(String phase)
   at PostSharp.Sdk.Extensibility.Project.Execute()
   at PostSharp.Hosting.PostSharpObject.ExecuteProjects()
   at PostSharp.Hosting.PostSharpObject.InvokeProject(ProjectInvocation projectInvocation).

编辑：在尝试为此生成示例项目时，我能够找出原因。我们将 OnMethodBoundary 方面（内部日志记录方面）应用于具有 public static implicit operator T(Editable<T> item) 的类型。当我告诉 PostSharp 排除这个方法时，问题就消失了。

因此，要重现它，请将 OnMethodBoundary 应用于通用隐式运算符，同时使用 Express 许可证。

[ExceptionLoggerAspect]
class Challenged<T>
{
    public T Value { get; set; }

    public static implicit operator T(Challenged<T> item)
    {
        return item.Value;
    }
}

Answer 1

我最终使用的解决方法是在通用类型的隐式运算符上使用 AttributeExclude = true，我们的 OnMethodBoundaryAspect 被多播到该运算符上。

[ErrorLoggingAspect(AttributeExclude = true)]
public static implicit operator T(Editable<T> item) 
{ 
  ... 
}

使用 PostSharp 4.3.20 编译时出错

Error compiling with PostSharp 4.3.20

postsharp