hphp/hack/test/typecheck/fun_typedef.php

   1 <?hh
   2 /**
   3  * Copyright (c) 2014, Facebook, Inc.
   4  * All rights reserved.
   5  *
   6  * This source code is licensed under the BSD-style license found in the
   7  * LICENSE file in the "hack" directory of this source tree. An additional grant
   8  * of patent rights can be found in the PATENTS file in the same directory.
   9  *
  10  */
  11
  12 type X = (function(): int);
  13
  14 function useX(X $x): int {
  15   do {
  16     return $x();
  17     if (true) {
  18     }
  19   } while (true);
  20   return 0;
  21 }