// 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 The instance getters of a class C are those instance getters
/// declared by C, either implicitly or explicitly, and the instance getters
/// inherited by C from its superclass. The static getters of a class C are those
/// static getters declared by C.
/// A getter declaration may conflict with other declarations (10.11).
/// Let C be a class. It is a compile-time error if C declares a
/// • getter or a setter with basename n, and has a method named n.
/// • method named n, and has a getter or a setter with basename n.
///
/// @description Checks that it is no compile-time error if a class has an
/// explicitly declared instance getter and a static method with the same name
/// declared in its superclass.
/// @author ngl@unipro.ru


class A {
  static void v() {}
}

class C extends A {
  get v {
    return 5;
  }
}

main() {
  new C().v;
}
