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