| // Copyright 2020 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: --harmony-weak-refs --expose-gc --noincremental-marking |
| |
| let cleanup_called = false; |
| function cleanup(holdings) { |
| cleanup_called = true; |
| }; |
| (function() { |
| let fg = new FinalizationRegistry(cleanup); |
| (function() { |
| let x = {}; |
| fg.register(x, {}); |
| x = null; |
| })(); |
| // Schedule fg for cleanup. |
| gc(); |
| })(); |
| |
| // Collect fg, which should result in cleanup not called. |
| gc(); |
| |
| setTimeout(function() { assertFalse(cleanup_called); }, 0); |
