12478684aa
PR-URL: https://github.com/nodejs/node/pull/33579 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Shelley Vohr <codebytere@gmail.com>
35 lines
944 B
JavaScript
35 lines
944 B
JavaScript
// Copyright 2020 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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Object.prototype[1] = 153;
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(function TestSloppyStoreToReadOnlyProperty() {
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function foo(prototype_frozen) {
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let ar = [];
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for (let i = 0; i < 3; i++) {
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ar[i] = 42;
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if (prototype_frozen) {
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if (i == 1) {
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// Attempt to overwrite read-only element should not change
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// array length.
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assertEquals(1, ar.length);
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} else {
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assertEquals(i + 1, ar.length);
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}
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}
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}
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return ar;
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}
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// Warm-up store IC.
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assertEquals([42,42,42], foo(false));
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assertEquals([42,42,42], foo(false));
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assertEquals([42,42,42], foo(false));
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assertEquals([42,42,42], foo(false));
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Object.freeze(Object.prototype);
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// Ensure IC was properly invalidated.
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assertEquals([42,153,42], foo(true));
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})();
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