| library; | 
 | // | 
 | // Problems in library: | 
 | // | 
 | // pkg/front_end/testcases/general/issue48487.dart:9:3: Error: The 'enhanced-enums' language feature is disabled for this library. | 
 | // Try removing the `@dart=` annotation or setting the language version to 2.17 or higher. | 
 | //   void test() { | 
 | //   ^ | 
 | // pkg/front_end/testcases/general/issue48487.dart:5:1: Context: This is the annotation that opts out this library from the 'enhanced-enums' language feature. | 
 | // // @dart=2.16 | 
 | // ^^^^^^^^^^^^^ | 
 | // | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | class T extends core::_Enum /*isEnum*/  { | 
 |   enum-element static const field self::T t = const self::T::•(0, "t"); | 
 |   static const field core::List<self::T> values = const <self::T>[self::T::t]; | 
 |   const synthetic constructor •(core::int #index, core::String #name) → self::T | 
 |     : super core::_Enum::•(#index, #name) | 
 |     ; | 
 |   method _enumToString() → core::String | 
 |     return "T.${this.{core::_Enum::_name}{core::String}}"; | 
 |   method test() → void | 
 |     ; | 
 | } | 
 | static method main() → void | 
 |   ; | 
 |  | 
 |  | 
 | Extra constant evaluation status: | 
 | Evaluated: ConstructorInvocation @ org-dartlang-testcase:///issue48487.dart:8:3 -> InstanceConstant(const T{_Enum.index: 0, _Enum._name: "t"}) | 
 | Evaluated: ListLiteral @ org-dartlang-testcase:///issue48487.dart:7:6 -> ListConstant(const <T>[const T{_Enum.index: 0, _Enum._name: "t"}]) | 
 | Extra constant evaluation: evaluated: 7, effectively constant: 2 |