20 lines
564 B
JavaScript
20 lines
564 B
JavaScript
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// Copyright 2021 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 foo(first_run) {
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let o = { x: 0 };
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if (first_run) assertTrue(%HasOwnConstDataProperty(o, 'x'));
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Object.defineProperty(o, 'x', { writable: false });
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delete o.x;
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o.x = 23;
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if (first_run) assertFalse(%HasOwnConstDataProperty(o, 'x'));
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}
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%PrepareFunctionForOptimization(foo);
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foo(true);
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foo(false);
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%OptimizeFunctionOnNextCall(foo);
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foo(false);
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