// 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.
// Redirection constructors must not be cyclic.

class A {
  var x;
  A(x)
      : this(0) //# 01: compile-time error
      ;
}

main() {
  new A(10);
}
