test/mjsunit/regress/regress-4493-1.js

// Copyright 2015 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 baz(x, f) { return x.length; };

function bar(x, y) {
  if (y) {}
  baz(x, function() { return x; });
};

function foo(x) { bar(x, ''); }
%OptimizeFunctionOnNextCall(foo);
foo(['a']);