nodejs/deps/v8/test/mjsunit/regress/regress-653407.js

// Copyright 2016 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

// This is to test if 'this' gets correctly initialized when inlining
// constructors in turbofan.

class superClass {
  constructor() {}
}

class subClass extends superClass {
  constructor() {
    super();
  }
}

function f() {
  new subClass();
};
%PrepareFunctionForOptimization(f);
f(); // We need this to collect feedback, so that subClass gets inlined in f.
%OptimizeFunctionOnNextCall(f);
f();