blob: 80f3fa50c9271e062c1bc43ab4d280631e401fea [file] [log] [blame]
// 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 --opt
// Ensure that we properly check for elements on the prototypes.
function foo(o) {
var s = "";
for (var i in o) s += i;
return s;
}
var o = {};
assertEquals("", foo(o));
assertEquals("", foo(o));
%OptimizeFunctionOnNextCall(foo);
assertEquals("", foo(o));
Object.prototype[0] = 1;
assertEquals("0", foo(o));