| // 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. | |
| // Flags: --allow-natives-syntax --enable-slow-asserts --expose-gc | |
| class Derived extends Array { | |
| constructor(a) { throw "error" } | |
| } | |
| // Derived is not a subclass of RegExp | |
| let o = Reflect.construct(RegExp, [], Derived); | |
| o.lastIndex = 0x1234; | |
| %HeapObjectVerify(o); | |
| gc(); | |
| %HeapObjectVerify(o); |