446d6a0678
The reason is that non-configurability still allows a writable property to become read-only. BUG=chromium:663750 Review-Url: https://codereview.chromium.org/2508873002 Cr-Commit-Position: refs/heads/master@{#41029}
27 lines
457 B
JavaScript
27 lines
457 B
JavaScript
// 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
|
|
|
|
var v = 0;
|
|
function foo(a) {
|
|
v = a;
|
|
}
|
|
this.x = 0;
|
|
delete x;
|
|
|
|
foo();
|
|
foo();
|
|
%OptimizeFunctionOnNextCall(foo);
|
|
foo();
|
|
assertEquals(undefined, v);
|
|
|
|
Object.freeze(this);
|
|
|
|
foo(4);
|
|
foo(5);
|
|
%OptimizeFunctionOnNextCall(foo);
|
|
foo(6);
|
|
assertEquals(undefined, v);
|