d485af5644
This implements the spec change in https://github.com/tc39/ecma262/pull/2164 Making TA elements configurable has interaction with delete. While the elements are configurable, they are only "deletable" via detaching the underlying ArrayBuffer, not via `delete`. That is, `delete ta[idx]` for an in-bounds `idx` still returns false. Bug: v8:11281 Change-Id: I2e9348a7ec3c3239a92cc35e51b7182423736834 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2605234 Reviewed-by: Marja Hölttä <marja@chromium.org> Commit-Queue: Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/master@{#71955}
59 lines
1.1 KiB
JavaScript
59 lines
1.1 KiB
JavaScript
// Copyright 2015 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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(function () {
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var o = [];
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o.__proto__ = {};
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function store(o, i, v) {
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o[i] = v;
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}
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store(o, 0, 0);
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store(o, 1, 0);
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store(o, 2, 0);
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o.__proto__[10000000] = 1;
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var set = 0;
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Object.defineProperty(o, '3', {
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get: function() {
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return 100;
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},
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set: function(v) {
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set = v;
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}
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});
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store(o, 3, 1000);
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assertEquals(1000, set);
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assertEquals(100, o[3]);
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})();
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(function () {
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var o = new Int32Array(1);
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assertThrows(
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() => Object.defineProperty(o, '0', {get: function() {}}), TypeError);
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assertEquals(
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{value: 0, writable: true, enumerable: true, configurable: true},
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Object.getOwnPropertyDescriptor(o, '0'));
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})();
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(function() {
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function f() {
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var a = new Array();
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a[1] = 1.5;
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return a;
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};
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%PrepareFunctionForOptimization(f);
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f();
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f();
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%OptimizeFunctionOnNextCall(f);
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var a = f();
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a[2] = 2;
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assertEquals(3, a.length);
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})();
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