21 lines
570 B
JavaScript
21 lines
570 B
JavaScript
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// Copyright 2024 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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assertTrue(%StringWrapperToPrimitiveProtector());
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function MyString() {}
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MyString.prototype[Symbol.toPrimitive] = function() {
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return 'new';
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}
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function MyMiddle() {}
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MyString.__proto__ = MyMiddle.prototype;
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MyMiddle.__proto__ = String.prototype;
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assertFalse(%StringWrapperToPrimitiveProtector());
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let x = new MyString('old');
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assertEquals('got new', 'got ' + x);
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