Compat issues with assembly System.IO.FileSystem:
# These are now virtual in the implementation, which should be ok.
CannotMakeMemberAbstract : Member 'public System.Boolean System.IO.FileSystemInfo.Exists' is abstract in the reference but is not abstract in the implementation.
CannotMakeMemberAbstract : Member 'public System.String System.IO.FileSystemInfo.Name' is abstract in the reference but is not abstract in the implementation.
CannotMakeMemberAbstract : Member 'public System.Boolean System.IO.FileSystemInfo.Exists.get()' is abstract in the reference but is not abstract in the implementation.
CannotMakeMemberAbstract : Member 'public System.String System.IO.FileSystemInfo.Name.get()' is abstract in the reference but is not abstract in the implementation.
# C# generates backing fields for fixed buffers as public.
TypesMustExist : Type 'System.IO.Enumeration.FileSystemEntry.<_fileNameBuffer>e__FixedBuffer' does not exist in the reference but it does exist in the implementation.
