library test /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_field.dart:51:7: Error: The mixin application class 'C' introduces an erroneous override of 'y'.
// class C = B with M implements I<int>;
//       ^
// pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_field.dart:48:7: Context: The field 'M.y' has type 'int', which does not match the corresponding type, 'Object', in the overridden setter, 'I.y'.
//  - 'Object' is from 'dart:core'.
//   int y = 0;
//       ^
// pkg/front_end/testcases/runtime_checks_new/mixin_forwarding_stub_field.dart:43:12: Context: This is the overridden method ('y').
//   void set y(covariant Object value);
//            ^
//
import self as self;
import "dart:core" as core;

class B extends core::Object {
  synthetic constructor •() → self::B
    : super core::Object::•()
    ;
  get x() → core::int {
    throw "Should not be reached";
  }
  set x(core::int value) → void {
    throw "Should not be reached";
  }
  get y() → core::int {
    throw "Should not be reached";
  }
  set y(core::int value) → void {
    throw "Should not be reached";
  }
}
abstract class I<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::I<self::I::T%>
    : super core::Object::•()
    ;
  abstract get x() → self::I::T%;
  abstract set x(covariant-by-class self::I::T% value) → void;
  abstract get y() → core::Object;
  abstract set y(covariant-by-declaration core::Object value) → void;
}
class M extends core::Object {
  field core::int x = 0;
  field core::int y = 0;
  synthetic constructor •() → self::M
    : super core::Object::•()
    ;
}
class C extends self::B implements self::I<core::int>, self::M /*isEliminatedMixin*/  {
  covariant-by-class field core::int x = 0;
  covariant-by-declaration field core::int y = 0;
  synthetic constructor •() → self::C
    : super self::B::•()
    ;
}
static method expectTypeError(() → void callback) → void {
  try {
    callback(){() → void};
    throw "Expected TypeError, did not occur";
  }
  on core::TypeError catch(no-exception-var) {
  }
}
static method expect(core::Object value, core::Object expected) → void {
  if(!(value =={core::Object::==}{(core::Object) → core::bool} expected)) {
    throw "Expected ${expected}, got ${value}";
  }
}
static method test(self::I<core::Object> i) → void {
  self::expectTypeError(() → void {
    i.{self::I::x} = "hello";
  });
  i.{self::I::x} = 1;
  self::expect(i.{self::I::x}{core::Object}, 1);
  self::expectTypeError(() → void {
    i.{self::I::y} = "hello";
  });
  i.{self::I::y} = 2;
  self::expect(i.{self::I::y}{core::Object}, 2);
}
static method main() → void {
  self::test(new self::C::•());
}