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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
class A extends Object {
constructor(arg) {
super();
superclass_counter++;
if (superclass_counter === 3) {
return 1;
}
}
}
class B extends A {
constructor() {
let x = super(123);
return x.a;
}
}
var superclass_counter = 0;
var observer = new Proxy(A, {
get(target, property, receiver) {
if (property === 'prototype') {
%DeoptimizeFunction(B);
}
return Reflect.get(target, property, receiver);
}
});
%PrepareFunctionForOptimization(B);
Reflect.construct(B, [], observer);
Reflect.construct(B, [], observer);
%OptimizeFunctionOnNextCall(B);
assertThrows(() => Reflect.construct(B, [], observer), TypeError);
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