test262/implementation-contributed/v8/mjsunit/es9/object-spread-ic-multiple-transitions.js
test262-automation 7298a38552 [v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
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2018-09-14 12:32:18 -04:00

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JavaScript

// Copyright 2018 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.
(function testMegamorphicWithNonSimpleTransitionHandler() {
function spread(o) { return { ...o }; }
// Set up transition tree
let obj = { ...{}, a: 0, b: 1, boom: 2};
// make CloneObjectIC MEGAMORPHIC
spread(new Proxy({}, {}));
// Ensure we don't crash, and create the correct object
assertEquals({ a: 0, b: 1, c: 2 }, spread({ a: 0, b: 1, c: 2 }));
})();