20 lines
440 B
JavaScript
20 lines
440 B
JavaScript
|
// Copyright 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.
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
function MyError() {}
|
||
|
|
var obj = {
|
||
|
|
"length": { toString: function() {
|
||
|
|
throw new MyError();
|
||
|
|
}, valueOf: null
|
||
|
|
},
|
||
|
|
"1": "A",
|
||
|
|
"3": "B",
|
||
|
|
"5": "C"
|
||
|
|
};
|
||
|
|
obj[Symbol.isConcatSpreadable] = true;
|
||
|
|
assertThrows(function() {
|
||
|
|
[].concat(obj);
|
||
|
|
}, MyError);
|