ILVerify fails with non-actionable uncaught exception on specific (possibly corrupt?) DLL

[kg]

Description

I'm investigating an error that only occurs in checked builds of the runtime, where Something is wrong with a managed binary, but I'm not sure what.

dotnet-ilverify is of no use here because it just throws an unhandled exception early in execution when passed this dll.

Reproduction Steps

ilverify.exe mcc_i06.dll
You can also ilverify.exe --verbose -t mcc_i06.dll for a different failure
mcc_i06.zip

Expected behavior

Verification results or diagnostic messages

Actual behavior

PS E:\desktop> ilverify --verbose .\mcc_i06.dll

Using input file 'E:\desktop\mcc_i06.dll'

Error: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
   at ILVerify.Program..ctor(ILVerifyRootCommand command)
   at ILVerify.ILVerifyRootCommand.<.ctor>b__40_0(ParseResult result)
PS E:\desktop> ilverify .\mcc_i06.dll
Error: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
   at ILVerify.Program.Resolve(String simpleName)
   at ILVerify.Program.ILVerify.IResolver.ResolveAssembly(AssemblyName assemblyName)
   at ILVerify.Verifier.SetSystemModuleName(AssemblyName name)
   at ILVerify.Program.Run()
   at ILVerify.ILVerifyRootCommand.<.ctor>b__40_0(ParseResult result)

Regression?

No response

Known Workarounds

No response

Configuration

PS E:\desktop> dotnet --list-runtimes
Microsoft.AspNetCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.35 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.35 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

PS E:\desktop> dotnet tool install -g dotnet-ilverify
Tool 'dotnet-ilverify' was reinstalled with the stable version (version '8.0.0').

Other information

ILSpy sees nothing wrong with this file, but classic PEVerify says something is wrong with one of the structs. Not sure if that's true or not.

[MichalPetryka]

This exception happens if it can't find mscorlib/SPC in your working directory IIRC reference list. You must pass a path with it with -r.

[jkotas]

This is duplicate of #103154, fixed for .NET 9.

The output in .NET 9 is:

>ilverify mcc_i06.dll
Error: Assembly or module not found: mscorlib
Internal.IL.VerifierException: Assembly or module not found: mscorlib