1// Copyright 2015 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// Flags: --allow-natives-syntax 6 7function Foo() {} 8Foo.prototype.x = 0; 9function foo(f) { 10 f.x = 1; 11} 12foo(new Foo); 13foo(new Foo); 14%OptimizeFunctionOnNextCall(foo); 15foo(new Foo); 16assertEquals(Foo.prototype.x, 0); 17