// Copyright (c) 2012, 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.

class A {
  a(x) => x + 1;
}

f(p) => p("A");

main() {
  A a = new A();
  a.a(1);
  Expect.throws(
      () => print(f((x) => (a.a(x)))), (e) => e is NoSuchMethodError);
}
