11.13.2-50-s-strict.js

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'use strict';

// Copyright (c) 2012 Ecma International.  All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

es5id: 11.13.2-50-s

description: >

    Strict Mode - TypeError is thrown if The LeftHandSide of a

    Compound Assignment operator(<<=) is a reference to a non-existent

    property of an object whose [[Extensible]] internal property is

    false

flags: [onlyStrict]

---*/

        var obj = {};

        Object.preventExtensions(obj);

assert.throws(TypeError, function() {

            obj.len <<= 10;

});

reportCompare(0, 0);