| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-array.from |
| description: Error setting length of object (traversed via iterator) |
| info: | |
| [...] |
| 6. If usingIterator is not undefined, then |
| [...] |
| g. Repeat |
| [...] |
| iv. If next is false, then |
| 1. Let setStatus be Set(A, "length", k, true). |
| 2. ReturnIfAbrupt(setStatus). |
| features: [Symbol.iterator] |
| ---*/ |
| |
| var C = function() {}; |
| var items = {}; |
| Object.defineProperty(C.prototype, 'length', { |
| set: function(_) { |
| throw new Test262Error(); |
| } |
| }); |
| items[Symbol.iterator] = function() { |
| return { |
| next: function() { |
| return { |
| done: true |
| }; |
| } |
| }; |
| }; |
| |
| assert.throws(Test262Error, function() { |
| Array.from.call(C, items); |
| }); |