The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/js1_8/extensions/regress-394709.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,60 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +//-----------------------------------------------------------------------------
    1.10 +var BUGNUMBER = 394709;
    1.11 +var summary = 'Do not leak with object.watch and closure';
    1.12 +var actual = 'No Leak';
    1.13 +var expect = 'No Leak';
    1.14 +
    1.15 +if (typeof countHeap == 'undefined')
    1.16 +{
    1.17 +  countHeap = function () { 
    1.18 +    print('This test requires countHeap which is not supported'); 
    1.19 +    return 0;
    1.20 +  };
    1.21 +}
    1.22 +
    1.23 +//-----------------------------------------------------------------------------
    1.24 +test();
    1.25 +//-----------------------------------------------------------------------------
    1.26 +
    1.27 +function test()
    1.28 +{
    1.29 +  enterFunc ('test');
    1.30 +  printBugNumber(BUGNUMBER);
    1.31 +  printStatus (summary);
    1.32 +
    1.33 +  // Ensure that we flush all values so that gc() collects all objects that
    1.34 +  // the user cannot reach from JS.
    1.35 +  eval();
    1.36 +
    1.37 +  runtest();
    1.38 +  gc();
    1.39 +  var count1 = countHeap();
    1.40 +  runtest();
    1.41 +  gc();
    1.42 +  var count2 = countHeap();
    1.43 +  runtest();
    1.44 +  gc();
    1.45 +  var count3 = countHeap();
    1.46 +  /* Try to be tolerant of conservative GC noise: we want a steady leak. */
    1.47 +  if (count1 < count2 && count2 < count3)
    1.48 +    throw "A leaky watch point is detected";
    1.49 +
    1.50 +  function runtest () {
    1.51 +    var obj = { b: 0 };
    1.52 +    obj.watch('b', watcher);
    1.53 +
    1.54 +    function watcher(id, old, value) {
    1.55 +      ++obj.n;
    1.56 +      return value;
    1.57 +    }
    1.58 +  }
    1.59 +
    1.60 +  reportCompare(expect, actual, summary);
    1.61 +
    1.62 +  exitFunc ('test');
    1.63 +}