| // Copyright 2016 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 | |
| function foo() {} | |
| foo.__defineGetter__(undefined, function() {}) | |
| function bar() {} | |
| function baz(x) { return x instanceof bar }; | |
| %OptimizeFunctionOnNextCall(baz); | |
| baz(); | |
| Object.setPrototypeOf(bar, null); | |
| bar[Symbol.hasInstance] = function() { return true }; | |
| assertTrue(baz()); |