20 lines
635 B
JavaScript
20 lines
635 B
JavaScript
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// 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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// Flags: --allow-natives-syntax
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let a = [];
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Object.defineProperty(a, "length", {writable: false});
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function f() {
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return a.pop();
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}
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assertThrows(f, TypeError, /Cannot assign to read only property 'length'/);
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%PrepareFunctionForOptimization(f);
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for (let i = 0; i < 3; i++) {
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assertThrows(f, TypeError, /Cannot assign to read only property 'length'/);
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}
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%OptimizeFunctionOnNextCall(f);
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assertThrows(f, TypeError, /Cannot assign to read only property 'length'/);
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