// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
/// when:
/// Right Object: if T1 is Object then:
///  - if T0 is an unpromoted type variable with bound B then T0 <: T1 iff
///      B <: Object
///  - if T0 is a promoted type variable X & S then T0 <: T1 iff S <: Object
///  - if T0 is FutureOr<S> for some S, then T0 <: T1 iff S <: Object.
///  - if T0 is S* for any S, then T0 <: T1 iff S <: T1
///  - if T0 is Null, dynamic, void, or S? for any S, then the subtyping does not
///      hold (per above, the result of the subtyping query is false).
///  - Otherwise T0 <: T1 is true.
/// @description Check that if T0 is a promoted type variable X & S and
/// S is not subtype of Object then T0 is not subtype of Object
/// @author sgrekhov@unipro.ru
/// @issue 42089
///
/// @description Check that if type T0 is not a subtype of a type T1, then
/// instance of T0 cannot be be assigned to the to global variable of type T1.
/// Assignment to global variable is tested.
/// @author sgrekhov@unipro.ru
/// @author ngl@unipro.ru
///
/// This test is generated from right_object_fail_A02.dart and 
/// global_variable_fail_x01.dart.
/// Don't modify it. If you want to change this test, change one of the files 
/// above and then run generator.dart to regenerate the tests.


class X {}
class S extends X {}

S? t0Instance = new S();
Object t1Instance = new Object();

const t1Default = const Object();


class GlobalVariableTest {
  GlobalVariableTest() {
    t1Instance = t0Instance;
//               ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }

  foo() {
    t1Instance = t0Instance;
//               ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }
  static test() {
    t1Instance = t0Instance;
//               ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }
}


test<T>(T? t0Instance) {
  if (t0Instance is S?) {
    
  t1Instance = t0Instance;
//             ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  bar () {
    t1Instance = t0Instance;
//               ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }

  }
}

main() {
  test<X>(t0Instance);
}