library;
//
// Problems in library:
//
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart:28:9: Error: The return type of the method 'F.y' is 'A', which does not match the return type, 'B', of the overridden method, 'D.y'.
//  - 'A' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart'.
//  - 'B' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart'.
// Change to a subtype of 'B'.
//   A get y => null;
//         ^
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart:18:7: Context: This is the overridden method ('y').
//   get y => null; // Inferred type: B
//       ^
//
// pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart:27:16: Error: The parameter 'value' of the method 'F.x' has type 'B', which does not match the corresponding type, 'A', in the overridden method, 'D.x'.
//  - 'B' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.dart'.
//  - 'A' is from 'pkg/front_end/testcases/general_nnbd_opt_out/override_check_accessor_after_inference.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_after_inference.dart:17:12: Context: This is the overridden method ('x').
//   void set x(value) {} // Inferred type: A
//            ^
//
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 /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ toString() → core::String*; -> core::Object::toString
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ runtimeType() → core::Type*; -> core::Object::runtimeType
}
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::B*
    return null;
  abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ toString() → core::String*; -> core::Object::toString
  abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ runtimeType() → core::Type*; -> core::Object::runtimeType
}
class D extends self::C {
  synthetic constructor •() → self::D*
    : super self::C::•()
    ;
  set x(self::A* value) → void {}
  get y() → self::B*
    return null;
}
class E extends self::D {
  synthetic constructor •() → self::E*
    : super self::D::•()
    ;
  set x(self::A* value) → void {}
  get y() → self::B*
    return null;
}
class F extends self::D {
  synthetic constructor •() → self::F*
    : super self::D::•()
    ;
  set x(self::B* value) → void {}
  get y() → self::A*
    return null;
}
static method main() → dynamic {}