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