library;
//
// Problems in library:
//
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart:23:14: Error: The return type of the method 'E.y' is 'Object', which does not match the return type, 'A', of the overridden method, 'C.y'.
//  - 'Object' is from 'dart:core'.
//  - 'A' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart'.
// Change to a subtype of 'A'.
//   Object get y => null;
//              ^
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart:13:9: Context: This is the overridden method ('y').
//   A get y => null;
//         ^
//
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart:22:16: Error: The parameter 'value' of the method 'E.x' has type 'B', which does not match the corresponding type, 'A', in the overridden method, 'C.x'.
//  - 'B' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart'.
//  - 'A' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart'.
// Change to a supertype of 'A', or, for a covariant parameter, a subtype.
//   void set x(B value) {}
//                ^
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_basic.dart:12:12: Context: This is the overridden method ('x').
//   void set x(A value) {}
//            ^
//
import self as self;
import "dart:core" as core;

class A extends core::Object {
  synthetic constructor •() → self::A*
    : super core::Object::•()
    ;
  abstract member-signature get _identityHashCode() → core::int*;
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*;
  abstract member-signature operator ==(dynamic other) → core::bool*;
  abstract member-signature get hashCode() → core::int*;
  abstract member-signature method toString() → core::String*;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic;
  abstract member-signature get runtimeType() → core::Type*;
}
class B extends self::A {
  synthetic constructor •() → self::B*
    : super self::A::•()
    ;
}
class C extends core::Object {
  synthetic constructor •() → self::C*
    : super core::Object::•()
    ;
  set x(self::A* value) → void {}
  get y() → self::A*
    return null;
  abstract member-signature get _identityHashCode() → core::int*;
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*;
  abstract member-signature operator ==(dynamic other) → core::bool*;
  abstract member-signature get hashCode() → core::int*;
  abstract member-signature method toString() → core::String*;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic;
  abstract member-signature get runtimeType() → core::Type*;
}
class D extends self::C {
  synthetic constructor •() → self::D*
    : super self::C::•()
    ;
  set x(core::Object* value) → void {}
  get y() → self::B*
    return null;
}
class E extends self::C {
  synthetic constructor •() → self::E*
    : super self::C::•()
    ;
  set x(self::B* value) → void {}
  get y() → core::Object*
    return null;
}
static method main() → dynamic {}