test/mjsunit/regress/regress-794822.js

// 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

function* opt(arg = () => arg) {
  let tmp = opt.x;  // LdaNamedProperty
  for (;;) {
    arg;
    yield;
    function inner() { tmp }
    break;
  }
}

opt();
%OptimizeFunctionOnNextCall(opt);
opt();