// 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.
// Test that an instance field cannot be read as a static field.

class Foo {
  Foo() {}
  var x;
  void m() {}
}

main() {
  if (false) {
    var x = Foo.x;  /// 01: static type warning
    var m = Foo.m;  /// 02: static type warning
    Foo.m = 1;  /// 03: static type warning
    Foo.x = 1;  /// 04: static type warning
  }
}
