| library; | 
 | // | 
 | // Problems in library: | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:22:3: Error: Type 'F' not found. | 
 | //   F get y => super.y as F; | 
 | //   ^ | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:5:16: Error: 'A' doesn't implement 'D' so it can't be used with 'C'. | 
 | //  - 'A' is from 'pkg/front_end/testcases/general/issue44733.dart'. | 
 | //  - 'D' is from 'pkg/front_end/testcases/general/issue44733.dart'. | 
 | //  - 'C' is from 'pkg/front_end/testcases/general/issue44733.dart'. | 
 | // abstract class B extends A with C {} | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:9:12: Error: Expected identifier, but got 'super'. | 
 | // B get x => super.x; | 
 | //            ^^^^^ | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:18:9: Error: A non-null value must be returned since the return type 'E' doesn't allow null. | 
 | //  - 'E' is from 'pkg/front_end/testcases/general/issue44733.dart'. | 
 | //   E get y {} | 
 | //         ^ | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:22:25: Error: 'F' isn't a type. | 
 | //   F get y => super.y as F; | 
 | //                         ^ | 
 | // | 
 | // pkg/front_end/testcases/general/issue44733.dart:22:20: Error: Superclass has no getter named 'y'. | 
 | //   F get y => super.y as F; | 
 | //                    ^ | 
 | // | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | abstract class _B&A&C = self::A with self::C /*isAnonymousMixin*/  { | 
 |   synthetic constructor •() → self::_B&A&C | 
 |     : super self::A::•() | 
 |     ; | 
 | } | 
 | abstract class B extends self::_B&A&C { | 
 |   synthetic constructor •() → self::B | 
 |     : super self::_B&A&C::•() | 
 |     ; | 
 | } | 
 | abstract class C extends self::D /*isMixinDeclaration*/  { | 
 | } | 
 | abstract class E extends core::Object { | 
 |   synthetic constructor •() → self::E | 
 |     : super core::Object::•() | 
 |     ; | 
 | } | 
 | abstract class D extends core::Object { | 
 |   synthetic constructor •() → self::D | 
 |     : super core::Object::•() | 
 |     ; | 
 |   get y() → self::E { | 
 |     return invalid-expression "pkg/front_end/testcases/general/issue44733.dart:18:9: Error: A non-null value must be returned since the return type 'E' doesn't allow null. | 
 |  - 'E' is from 'pkg/front_end/testcases/general/issue44733.dart'. | 
 |   E get y {} | 
 |         ^" in null; | 
 |   } | 
 | } | 
 | abstract class A extends core::Object { | 
 |   synthetic constructor •() → self::A | 
 |     : super core::Object::•() | 
 |     ; | 
 |   get y() → invalid-type | 
 |     return invalid-expression "pkg/front_end/testcases/general/issue44733.dart:22:20: Error: Superclass has no getter named 'y'. | 
 |   F get y => super.y as F; | 
 |                    ^" as invalid-type; | 
 | } | 
 | static get x() → self::B | 
 |   return invalid-expression "pkg/front_end/testcases/general/issue44733.dart:9:12: Error: Expected identifier, but got 'super'. | 
 | B get x => super.x; | 
 |            ^^^^^"{<invalid>}.x; | 
 | static method f() → void { | 
 |   #L1: | 
 |   switch(self::x.{self::A::y}{invalid-type}{<invalid>}.z) /* invalid-type */ { | 
 |   } | 
 | } | 
 | static method main() → dynamic {} |