InvalidCastException when running BenchmarkDotNet with .NET 9 (RC1) AoT

[eNeRGy164]

When running benchmarks against .NET 9 RC1 AoT, I encountered an InvalidCastException on the generated project.
This issue seems to be related to/triggered by the <IlcGenerateCompleteTypeMetadata> property in the auto-generated .csproj file.

Steps to Reproduce

1. Clone https://github.com/eNeRGy164/AdventOfPerformance/tree/net90

2. Run BenchmarkDotNet with .NET 9 AoT using the command:

   dotnet run -c Release -f net9.0 -- --runtimes nativeaot90 --filter *PuzzlePart1Benchmarks*

3. Observe the exception being thrown during the build process.

   [G:\eNeRGy164\AdventOfPerformance\AdventOfPerformance\bin\Release\net9.0\dc62efe0-07da-4394-9f10-feb11cf922fe\BenchmarkDotNet.Autogenerated.csproj]
     Generating native code
   EXEC : error : Specified cast is not valid. [G:\eNeRGy164\AdventOfPerformance\AdventOfPerformance\bin\Release\net9.0\dc62efe0-07da-4394-9f10-feb11cf922fe\BenchmarkDotNet.Autogenerated.csproj]
     System.InvalidCastException: Specified cast is not valid.
        at ILCompiler.CompilerTypeSystemContext.EnsureLoadableTypeUncached(TypeDesc) + 0x3eb
        at ILCompiler.CompilerTypeSystemContext.EnsureLoadableType(TypeDesc) + 0x5a
        at ILCompiler.LibraryRootProvider.CheckCanGenerateMethod(MethodDesc) + 0x4c
        at ILCompiler.DependencyAnalysis.TypeMetadataNode.GetStaticDependencies(NodeFactory) + 0x48a
        at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.GetStaticDependenciesImpl(DependencyNodeCore`1) + 0x56
        at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.GetStaticDependencies(DependencyNodeCore`1) + 0xce
        at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.ProcessMarkStack() + 0xed
        at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.ComputeMarkedNodes() + 0x49
        at ILCompiler.ILScanner.ILCompiler.IILScanner.Scan() + 0x1b
        at ILCompiler.Program.<Run>g__RunScanner|4_0(Program.<>c__DisplayClass4_0&) + 0x1fa
        at ILCompiler.Program.Run() + 0x28ff
        at ILCompiler.ILCompilerRootCommand.<>c__DisplayClass240_0.<.ctor>b__0(ParseResult) + 0x321
   C:\Users\micha\.nuget\packages\microsoft.dotnet.ilcompiler\9.0.0-rc.1.24431.7\build\Microsoft.NETCore.Native.targets(317,5): error MSB3073: The command ""C:\Users\micha\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\9.0.0-rc.1.24431.7\tools\\ilc" @"G:\eNeRGy164\AdventOfPerformance\AdventOfPerformance\bin\Release\net9.0\dc62efe0-07da-4394-9f10-feb11cf922fe\obj\Release\net9.0/native\dc62efe0-07da-4394-9f10-feb11cf922fe.ilc.rsp"" exited with code 1. [G:\eNeRGy164\AdventOfPerformance\AdventOfPerformance\bin\Release\net9.0\dc62efe0-07da-4394-9f10-feb11cf922fe\BenchmarkDotNet.Autogenerated.csproj]

Workaround

Removing the <IlcGenerateCompleteTypeMetadata> property from the generated .csproj file resolves the issue, and the .bat file runs without exceptions.

Additional Details

BenchmarkDotNet version: 0.14.0
.NET SDK version: 9.0.100-rc.1.24452.12
This issue does not occur with SDK 8.0 and nativeaot80 or SDK 9.0 RC1 and net90
Link to the branch: net90

I'm not sure if this is a specific BenchmarkDotNet issue,or related to the ILCompiler itself.

[adamsitnik]

Hello @eNeRGy164

Big thanks for a detailed bug report!

Could you please check if this fix: #2616 has solved the problem?

To do that you need to download a preview verion from our CI feed: https://benchmarkdotnet.org/articles/guides/nuget.html?q=nightly#nightly

[eNeRGy164]

The latest nightly does indeed fix this. I did only search inside this repo, so didn't find the related issue. 🥳

Fixed by #2616