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e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
39 lines
871 B
JavaScript
39 lines
871 B
JavaScript
// Copyright 2017 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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class A extends Object {
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constructor(arg) {
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super();
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superclass_counter++;
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if (superclass_counter === 3) {
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return 1;
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}
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}
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}
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class B extends A {
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constructor() {
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let x = super(123);
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return x.a;
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}
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}
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var superclass_counter = 0;
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var observer = new Proxy(A, {
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get(target, property, receiver) {
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if (property === 'prototype') {
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%DeoptimizeFunction(B);
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}
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return Reflect.get(target, property, receiver);
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}
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});
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%PrepareFunctionForOptimization(B);
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Reflect.construct(B, [], observer);
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Reflect.construct(B, [], observer);
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%OptimizeFunctionOnNextCall(B);
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assertThrows(() => Reflect.construct(B, [], observer), TypeError);
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