/*
 * Copyright (c) 2016, 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
 * Description    Operator                          Associativity Precedence
 * Unary postfix  ., ?., e++, e–-, e1[e2], e1(), ()  None           16
 * @description Test that '?.' unary postfix operator has highest
 * precedence (16). Compare with Unary prefix (precedence 15). Test that
 * '?.' has priority higher than ~
 * @compile-error
 * @author sgrekhov@unipro.ru
 * @issue 42379
 */

class C {
  C operator ~() {
    return this;
  }

  C e() {
    return this;
  }
}

main() {
  C c = new C();
  ~c?.e();      // With NNBD we are unable to run ~c?.e(); because c?.e() returns C?
}