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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-isconcatspreadable
description: >
Revoked proxy value produces a TypeError during access of
`Symbol.isConcatSpreadable` property
info: |
[...]
5. Repeat, while items is not empty
a. Remove the first element from items and let E be the value of the
element.
b. Let spreadable be ? IsConcatSpreadable(E).
c. If spreadable is true, then
[...]
e. Else E is added as a single item rather than spread,
[...]
ES6 22.1.3.1.1: Runtime Semantics: IsConcatSpreadable ( O )
1. If Type(O) is not Object, return false.
2. Let spreadable be ? Get(O, @@isConcatSpreadable).
7.3.1 Get
[...]
3. Return ? O.[[Get]](P, O).
9.5.8 [[Get]]
[...]
2. Let handler be O.[[ProxyHandler]].
3. If handler is null, throw a TypeError exception.
features: [Proxy]
---*/
var handle = Proxy.revocable([], {});
handle.revoke();
assert.throws(TypeError, function() {
[].concat(handle.proxy);
}, '[].concat(handle.proxy) throws a TypeError exception');
reportCompare(0, 0);
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