src/third_party/v8/test/mjsunit/regress/regress-crbug-1009728.js

// Copyright 2019 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: --stress-lazy-source-positions

function foo(x) {
  (function bar() {
    {
      x: 1
    }
    function f() {}
  });
}
foo();