mirror of https://github.com/tc39/test262.git
26 lines
897 B
JavaScript
26 lines
897 B
JavaScript
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// Copyright (C) 2015 André Bargull. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: Mapped arguments object with non-configurable property
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description: >
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Mapped arguments property is changed to non-configurable and
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non-writable. Perform property attribute changes with two
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[[DefineOwnProperty]] calls. Add intervening call to [[Set]].
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flags: [noStrict]
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---*/
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function argumentsNonConfigurableThenNonWritableWithInterveningSet(a) {
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Object.defineProperty(arguments, "0", {configurable: false});
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arguments[0] = 2;
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Object.defineProperty(arguments, "0", {writable: false});
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assert.sameValue(a, 2);
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assert.sameValue(arguments[0], 2);
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// Postcondition: Arguments mapping is removed.
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a = 3;
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assert.sameValue(a, 3);
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assert.sameValue(arguments[0], 2);
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}
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argumentsNonConfigurableThenNonWritableWithInterveningSet(1);
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