|  | // Copyright 2018 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. | 
|  |  | 
|  | function set_value(obj, prop) { return obj[prop] = undefined } | 
|  |  | 
|  | var object1 = new Proxy({}, {set: true}); | 
|  | try { set_value(object1, "bla"); } catch (_) {}; | 
|  | try { set_value(object1, "0"); } catch (_) {}; | 
|  | try { set_value(object1, Symbol()); } catch(_) {}; | 
|  |  | 
|  | set_value({}, 1073741824) | 
|  |  | 
|  | var target = {}; | 
|  | var handler = { set() { return 42 } }; | 
|  | var object2 = new Proxy(target, handler); | 
|  | Object.defineProperty(target, 'bla', { value: 0 }); | 
|  | set_value(object2, 'bla', 0); |