library;
import self as self;
import "dart:core" as core;

class A extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
}
class B extends self::A {
  synthetic constructor •() → void
    : super self::A::•()
    ;
}
class C extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  set x(self::A value) → void {}
  get y() → self::A
    return null;
}
class D extends self::C {
  synthetic constructor •() → void
    : super self::C::•()
    ;
  set x(core::Object value) → void {}
  get y() → self::B
    return null;
}
class E extends self::C {
  synthetic constructor •() → void
    : super self::C::•()
    ;
  set x(self::B value) → void {}
  get y() → core::Object
    return null;
}
static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/override_check_accessor_basic.dart:23:56: Error: The return type of the method 'E::y' is dart.core::Object, which does not match the return type of the overridden method (#lib1::A).
Change to a subtype of #lib1::A.
  Object get /*@error=OverrideTypeMismatchReturnType*/ y => null;
                                                       ^", "pkg/front_end/testcases/override_check_accessor_basic.dart:22:57: Error: The parameter 'value' of the method 'E::x' has type #lib1::B, which does not match the corresponding type in the overridden method (#lib1::A).
Change to a supertype of #lib1::A (or, for a covariant parameter, a subtype).
  void set x(B /*@error=OverrideTypeMismatchParameter*/ value) {}
                                                        ^"]/* from null */;
static method main() → dynamic {}