| // Copyright 2019 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 includes(key, array) { |
| // Transition to dictionary mode in the final invocation. |
| array.__defineSetter__(key, () => {}); |
| // Will then read OOB. |
| return array.includes(1234); |
| }; |
| %PrepareFunctionForOptimization(includes); |
| includes('', []); |
| includes("", []); |
| %OptimizeFunctionOnNextCall(includes); |
| includes("", []); |
| includes("1235", []); |
