redefine-arguments-length.js

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/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

*/

var gTestfile = 'redefine-arguments-length.js';

//-----------------------------------------------------------------------------

var BUGNUMBER = 539766;

var summary =

  "Object.defineProperty sets arguments.length without setting the " +

  "length-overridden bit";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

function test_JSOP_ARGCNT()

  var length = "length";

  Object.defineProperty(arguments, length, { value: 17 });

  assertEq(arguments.length, 17);

  assertEq(arguments[length], 17);

test_JSOP_ARGCNT();

function test_js_fun_apply()

  var length = "length";

  Object.defineProperty(arguments, length, { value: 17 });

  function fun()

    assertEq(arguments.length, 17);

    assertEq(arguments[length], 17);

    assertEq(arguments[0], "foo");

    for (var i = 1; i < 17; i++)

      assertEq(arguments[i], undefined);

  fun.apply(null, arguments);

test_js_fun_apply("foo");

function test_array_toString_sub_1()

  Object.defineProperty(arguments, "length", { value: 1 });

  arguments.join = [].join;

  assertEq([].toString.call(arguments), "1");

test_array_toString_sub_1(1, 2);

function test_array_toString_sub_2()

  Object.defineProperty(arguments, "length", { value: 1 });

  assertEq([].toLocaleString.call(arguments), "1");

test_array_toString_sub_2(1, 2);

/******************************************************************************/

reportCompare(true, true);

print("All tests passed!");