c7eb436d09
Flags removed (all begin with "harmony-"): function-name instanceof iterator-close unicode-regexps regexp-exec regexp-subclass species BUG=v8:3566, v8:3648, v8:3699, v8:4093, v8:4447, v8:4602 Review-Url: https://codereview.chromium.org/2096933002 Cr-Commit-Position: refs/heads/master@{#37235}
29 lines
936 B
JavaScript
29 lines
936 B
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// Overwriting an array instance's __proto__ updates the protector
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let x = [];
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assertEquals(Array, x.map(()=>{}).constructor);
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assertEquals(Array, x.filter(()=>{}).constructor);
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assertEquals(Array, x.slice().constructor);
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assertEquals(Array, x.splice().constructor);
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assertEquals(Array, x.concat([1]).constructor);
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assertEquals(1, x.concat([1])[0]);
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class MyArray extends Array { }
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x.__proto__ = MyArray.prototype;
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assertTrue(%SpeciesProtector());
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assertEquals(MyArray, x.map(()=>{}).constructor);
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assertEquals(MyArray, x.filter(()=>{}).constructor);
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assertEquals(MyArray, x.slice().constructor);
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assertEquals(MyArray, x.splice().constructor);
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assertEquals(MyArray, x.concat([1]).constructor);
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assertEquals(1, x.concat([1])[0]);
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