// Copyright 2023 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 --maglev


function foo(o) {
    return o.length;
}

%PrepareFunctionForOptimization(foo);
assertEquals(6, foo("string"));
assertEquals(undefined, foo(4.2));

%OptimizeMaglevOnNextCall(foo);
assertEquals(6, foo("string"));
assertEquals(undefined, foo(4.2));