18 lines
417 B
JavaScript
18 lines
417 B
JavaScript
|
// Copyright 2018 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
|
||
|
|
|
||
|
|
const o = {x:9};
|
||
|
|
o.__proto__ = Array.prototype;
|
||
|
|
|
||
|
|
function foo(o) {
|
||
|
|
return o.indexOf(undefined);
|
||
|
|
}
|
||
|
|
|
||
|
|
assertEquals(-1, foo(o));
|
||
|
|
assertEquals(-1, foo(o));
|
||
|
|
%OptimizeFunctionOnNextCall(foo);
|
||
|
|
assertEquals(-1, foo(o));
|