v8/test/mjsunit/cross-realm-global-prototype.js
Ross McIlroy eab992fd40 [cleanup] Add %PrepareForOptimization to some more mjsunit tests.
Bug=v8:8801,v8:8394,v8:9183

Change-Id: I9d88d2aa2b261b0f8df83dd6075b68cbc626161f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1660476
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62172}
2019-06-14 11:34:28 +00:00

24 lines
688 B
JavaScript

// Copyright 2015 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
// Make sure we don't accidentally leak information about other objects.
var realm = Realm.create();
var test = Realm.eval(realm,
"() => { return Realm.global(0) instanceof Object }");
%PrepareFunctionForOptimization(test);
assertFalse(test());
// Set the prototype of the current global object to the global object of the
// other realm.
__proto__ = Realm.eval(realm, "this");
assertFalse(test());
test();
test();
%OptimizeFunctionOnNextCall(test);
assertEquals(false, test());