tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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regress-101488.js (2985B)

      1 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 /*
      7 * Date: 24 September 2001
      8 *
      9 * SUMMARY: Try assigning arr.length = new Number(n)
     10 * From correspondence with Igor Bukanov <igor@icesoft.no>
     11 * See http://bugzilla.mozilla.org/show_bug.cgi?id=101488
     12 *
     13 * Without the "new" keyword, assigning arr.length = Number(n) worked.
     14 * But with it, Rhino was giving an error "Inappropriate array length"
     15 * and SpiderMonkey was exiting without giving any error or return value -
     16 *
     17 * Comments on the Rhino code by igor@icesoft.no:
     18 *
     19 * jsSet_length requires that the new length value should be an instance
     20 * of Number. But according to Ecma 15.4.5.1, item 12-13, an error should
     21 * be thrown only if ToUint32(length_value) != ToNumber(length_value)
     22 */
     23 //-----------------------------------------------------------------------------
     24 var UBound = 0;
     25 var BUGNUMBER = 101488;
     26 var summary = 'Try assigning arr.length = new Number(n)';
     27 var status = '';
     28 var statusitems = [];
     29 var actual = '';
     30 var actualvalues = [];
     31 var expect= '';
     32 var expectedvalues = [];
     33 var arr = [];
     34 
     35 
     36 status = inSection(1);
     37 arr = Array();
     38 tryThis('arr.length = new Number(1);');
     39 actual = arr.length;
     40 expect = 1;
     41 addThis();
     42 
     43 status = inSection(2);
     44 arr = Array(5);
     45 tryThis('arr.length = new Number(1);');
     46 actual = arr.length;
     47 expect = 1;
     48 addThis();
     49 
     50 status = inSection(3);
     51 arr = Array();
     52 tryThis('arr.length = new Number(17);');
     53 actual = arr.length;
     54 expect = 17;
     55 addThis();
     56 
     57 status = inSection(4);
     58 arr = Array(5);
     59 tryThis('arr.length = new Number(17);');
     60 actual = arr.length;
     61 expect = 17;
     62 addThis();
     63 
     64 
     65 /*
     66 * Also try the above with the "new" keyword before Array().
     67 * Array() and new Array() should be equivalent, by ECMA 15.4.1.1
     68 */
     69 status = inSection(5);
     70 arr = new Array();
     71 tryThis('arr.length = new Number(1);');
     72 actual = arr.length;
     73 expect = 1;
     74 addThis();
     75 
     76 status = inSection(6);
     77 arr = new Array(5);
     78 tryThis('arr.length = new Number(1);');
     79 actual = arr.length;
     80 expect = 1;
     81 addThis();
     82 
     83 arr = new Array();
     84 tryThis('arr.length = new Number(17);');
     85 actual = arr.length;
     86 expect = 17;
     87 addThis();
     88 
     89 status = inSection(7);
     90 arr = new Array(5);
     91 tryThis('arr.length = new Number(17);');
     92 actual = arr.length;
     93 expect = 17;
     94 addThis();
     95 
     96 
     97 
     98 //-----------------------------------------------------------------------------
     99 test();
    100 //-----------------------------------------------------------------------------
    101 
    102 
    103 
    104 function tryThis(s)
    105 {
    106  try
    107  {
    108    eval(s);
    109  }
    110  catch(e)
    111  {
    112    // keep going
    113  }
    114 }
    115 
    116 
    117 function addThis()
    118 {
    119  statusitems[UBound] = status;
    120  actualvalues[UBound] = actual;
    121  expectedvalues[UBound] = expect;
    122  UBound++;
    123 }
    124 
    125 
    126 function test()
    127 {
    128  printBugNumber(BUGNUMBER);
    129  printStatus (summary);
    130 
    131  for (var i=0; i<UBound; i++)
    132  {
    133    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
    134  }
    135 }