// Copyright (c) 2011, 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 A method declaration may conflict with other declarations (10.11).
/// Let C be a class. It is a compile-time error if C declares a
/// • constructor named C.n and a static member with basename n.
/// • 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.
/// • static member with basename n, and has an instance member with basename n.
///
/// @description Checks that it is a compile error if a class C declares an
/// instance method named n and declares a setter named n=.
/// @author kaigorodov


class C {
  foo() {}
  set foo(var a) {}
//    ^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {
  C c = new C();
  c.foo();
}
