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/// Copyright (c) 2012 Ecma International. All rights reserved.
/// Ecma International makes this code available under the terms and conditions set
/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
/// "Use Terms"). Any redistribution of this code must retain the above
/// copyright and this notice and otherwise comply with the Use Terms.
/**
* @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-a-6.js
* @description Array.prototype.lastIndexOf - deleted properties of step 5 are visible here on an Array
*/
function testcase() {
var arr = [];
arr[10] = "10";
arr.length = 20;
var fromIndex = {
valueOf: function () {
delete arr[10];
return 11;
}
};
return -1 === arr.lastIndexOf("10", fromIndex);
}
runTestCase(testcase);
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