31 lines
787 B
JavaScript
31 lines
787 B
JavaScript
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// Copyright 2025 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 --turbofan --no-always-turbofan
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const obj = {
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func(optimize) {
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const arrowFunc = () => {
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return super.length;
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};
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%PrepareFunctionForOptimization(arrowFunc);
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if (optimize) {
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%OptimizeFunctionOnNextCall(arrowFunc);
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}
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return arrowFunc();
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}
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};
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// Make super.length polymorphic:
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// Case 1:
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assertEquals(undefined, obj.func(false));
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// Case 2:
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const u8Arr = new Uint8Array(20);
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obj.__proto__ = u8Arr;
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assertThrows(() => { obj.func(false); }, TypeError);
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// Optimize for Turbofan.
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assertThrows(() => { obj.func(true); }, TypeError);
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