Unhandled exception. Mono.Cecil.ResolutionException: Failed to resolve System.Windows.Threading.DispatcherPriority

[kanecko]

Using AltCover 9.0.1 via dotnet tool install --global altcover.global. My project is a very large C# .NET 4.8 desktop app with more than 2500 DLLs.

When cd-ing to my \bin folder and executing altcover.exe --verbose I get an exception:

Assembly symbol GUID = d97695fa-e174-4fd2-a9fd-47c0a0c60943 mvid = f924c941-ab1a-f964-b561-e6977c088f65 Symbol file someother.pdb GUID = d97695fa-e174-4fd2-a9fd-47c0a0c60943 Assembly someother.dll symbols from folder '"someother.pdb"' __Instrumented/someother.dll <= someother, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null Unhandled exception. Mono.Cecil.ResolutionException: Failed to resolve System.Windows.Threading.DispatcherPriority at Mono.Cecil.MetadataBuilder.GetConstantType(TypeReference constant_type, Object constant) at Mono.Cecil.MetadataBuilder.AddConstant(IConstantProvider owner, TypeReference type) at Mono.Cecil.MetadataBuilder.AddParameters(MethodDefinition method) at Mono.Cecil.MetadataBuilder.AddMethods(TypeDefinition type) at Mono.Cecil.MetadataBuilder.AddType(TypeDefinition type) at Mono.Cecil.MetadataBuilder.AddTypes() at Mono.Cecil.MetadataBuilder.BuildTypes() at Mono.Cecil.MetadataBuilder.BuildModule() at Mono.Cecil.MetadataBuilder.BuildMetadata() at Mono.Cecil.ModuleWriter.<>c.<BuildMetadata>b__2_0(MetadataBuilder builder, MetadataReader ) at Mono.Cecil.ModuleDefinition.Read[TItem,TRet](TItem item, Func3 read) at Mono.Cecil.ModuleWriter.BuildMetadata(ModuleDefinition module, MetadataBuilder metadata) at Mono.Cecil.ModuleWriter.Write(ModuleDefinition module, Disposable1 stream, WriterParameters parameters) at Mono.Cecil.ModuleWriter.WriteModule(ModuleDefinition module, Disposable1 stream, WriterParameters parameters) at Mono.Cecil.ModuleDefinition.Write(Stream stream, WriterParameters parameters) at Mono.Cecil.AssemblyDefinition.Write(Stream stream, WriterParameters parameters) at AltCover.Instrument.I.writeAssembly(AssemblyDefinition assembly, String path) in /_//AltCover.Engine/Instrument.fs:line 515 at AltCover.Instrument.I.writeAssemblies(AssemblyDefinition definition, String file, IEnumerable1 targets, FSharpFunc2 sink) in /_//AltCover.Engine/Instrument.fs:line 871 at AltCover.Instrument.I.visitAfterAssembly(InstrumentContext state, AssemblyEntry assembly) in /_//AltCover.Engine/Instrument.fs:line 1102 at AltCover.Instrument.I.instrumentationVisitorWrapper(FSharpFunc2 core, InstrumentContext state, Node node) in ///AltCover.Engine/Instrument.fs:line 1455 at [email protected](T node) in ///AltCover.Engine/Visitor.fs:line 1703 at Microsoft.FSharp.Primitives.Basics.List.mapToFreshConsTail[a,b](FSharpList1 cons, FSharpFunc2 f, FSharpList1 x) in D:\a\_work\1\s\src\FSharp.Core\local.fs:line 236 at Microsoft.FSharp.Primitives.Basics.List.map[T,TResult](FSharpFunc2 mapping, FSharpList1 x) in D:\a\_work\1\s\src\FSharp.Core\local.fs:line 245 at Microsoft.FSharp.Collections.SeqModule.Fold[T,TState](FSharpFunc2 folder, TState state, IEnumerable1 source) in D:\a\_work\1\s\src\FSharp.Core\seq.fs:line 907 at AltCover.Visitor.visit(IEnumerable1 visitors, IEnumerable1 assemblies) in /_//AltCover.Engine/Visitor.fs:line 1688 at [email protected](Unit unitVar0) in /_//AltCover.Engine/Main.fs:line 784 at AltCover.PathOperation.DoPathOperation[TAny](FSharpFunc2 operation, FSharpFunc2 handle) in /_//AltCover.Engine/Output.fs:line 21 at AltCover.CommandLine.I.doPathOperation[a](FSharpFunc2 f, a defaultValue, Boolean store) in ///AltCover.Engine/CommandLine.fs:line 200 at [email protected](FSharpFunc`2 f, a defaultValue, Boolean store) at AltCover.Main.I.doInstrumentation(String[] arguments) in ///AltCover.Engine/Main.fs:line 760 at AltCover.Main.I.main(String[] arguments) in ///AltCover.Engine/Main.fs:line 835 at [email protected](String[] arguments)

[kanecko]

Workaround/fix was to add "--dependency=C:\Windows\Microsoft.NET\assembly\GAC_MSIL\WindowsBase\v4.0_4.0.0.0__31bf3856ad364e35\WindowsBase.dll"