-27 Attribute resolved to two different types
--28 (warning) Somehow there's a function marked override, and
- doesn't override anything. Warn that this method will be
- ignored during overload resolution. (marked override == in IL,
- it has a 'virtual', but no 'newslot')
+-28 (retired)
-29 Use -option instead of --option: to move people to the new
command line handling.
+-30 This version of the runtime does not support making pinned local variables.
+ This code may cause errors on a runtime with a moving GC
+
+-31 Internal compiler error during the method emit phase.
+
+-32 Internal compiler error during parsing.
+
+-33 Contravariant type parameters cannot be the return type.
+
+-34 Contravariant type parameters can only be used as type arguments in
+ contravariant positions.
+
+-35 Covariant type parameters can only be used as type arguments in
+ covariant positions.
+
+-36 Variant type parameters can only be used with interface and
+ delegate types.
+
+-37 Contravariant type parameters cannot be byref method parameters.
+
+-38 Covariant type parameters cannot be used as method parameters.
----------