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// Copyright (c) 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/*---
esid: sec-array.prototype.concat
description: Array.prototype.concat array like to length throws
features: [Symbol.isConcatSpreadable]
---*/
var spreadableWithBrokenLength = {
"length": {
valueOf: null,
toString: null
},
"1": "A",
"3": "B",
"5": "C"
};
spreadableWithBrokenLength[Symbol.isConcatSpreadable] = true;
var obj2 = {
length: 3,
"0": "0",
"1": "1",
"2": "2"
};
var arr = ["X", "Y", "Z"];
assert.throws(TypeError, function() {
Array.prototype.concat.call(spreadableWithBrokenLength, obj2, arr);
}, 'Array.prototype.concat.call(spreadableWithBrokenLength, obj2, arr) throws a TypeError exception');
reportCompare(0, 0);
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