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2dcc3665ab
PR-URL: https://github.com/nodejs/node/pull/28016 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
55 lines
1.7 KiB
JavaScript
55 lines
1.7 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// Do not read out the prototype from a cross-realm object.
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var realm = Realm.create();
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__proto__ = {};
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assertEquals(null,
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Realm.eval(realm, "3; Reflect.getPrototypeOf(Realm.global(0))"));
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assertFalse(Realm.eval(realm, "3; Realm.global(0) instanceof Object"));
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__proto__ = new Proxy({}, { getPrototypeOf() { assertUnreachable() } });
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assertEquals(null,
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Realm.eval(realm, "1; Reflect.getPrototypeOf(Realm.global(0))"));
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assertFalse(Realm.eval(realm, "1; Realm.global(0) instanceof Object"));
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// Test that the instannceof check works in optimized code.
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var test = Realm.eval(realm,
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"()=>{1.1; return Realm.global(0) instanceof Object; }");
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%PrepareFunctionForOptimization(test);
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assertFalse(test());
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test();
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test();
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%OptimizeFunctionOnNextCall(test);
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assertFalse(test());
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__proto__ = {};
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__proto__ = new Proxy({}, { get(t, p, r) { assertUnreachable() } });
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assertEquals(null,
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Realm.eval(realm, "2; Reflect.getPrototypeOf(Realm.global(0))"));
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assertFalse(Realm.eval(realm, "2; Realm.global(0) instanceof Object"));
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__proto__ = {};
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__proto__.__proto__ = new Proxy({}, {
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getPrototypeOf() { assertUnreachable() }
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});
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assertEquals(null,
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Realm.eval(realm, "4; Reflect.getPrototypeOf(Realm.global(0))"));
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assertFalse(Realm.eval(realm, "4; Realm.global(0) instanceof Object"));
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// 2-level proxy indirection
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__proto__ = {};
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__proto__ = new Proxy({},
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new Proxy({}, {
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get() { assertUnreachable() }
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})
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);
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assertEquals(null,
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Realm.eval(realm, "5; Reflect.getPrototypeOf(Realm.global(0))"));
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assertFalse(Realm.eval(realm, "5; Realm.global(0) instanceof Object"));
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