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