1// Copyright 2014 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 t1() { return this instanceof t1; } 8function t2() { return this instanceof t2; } 9 10var o1 = new (function() { })(); 11Object.defineProperty(o1, "t", {get:function() { return this instanceof o1.constructor; }}); 12var o2 = new (function() { })(); 13Object.defineProperty(o2, "t", {get:function() { return this instanceof o1.constructor; }}); 14var o3 = new (function() { })(); 15o3.t = true; 16 17function f(o) { 18 return 1 + (o.t ? 1 : 2); 19} 20 21f(o1); 22f(o1); 23f(o2); 24%OptimizeFunctionOnNextCall(f); 25f(o3); 26