JSTests/test262/test/language/expressions/compound-assignment/11.13.2-6-4-s.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 11.13.2-6-4-s
description: >
    Strict Mode - SyntaxError is thrown if the identifier eval appear
    as the LeftHandSideExpression of a Compound Assignment operator(+=)
flags: [onlyStrict]
---*/

        var blah = eval;
assert.throws(SyntaxError, function() {
            eval("eval += 20;");
});
assert.sameValue(blah, eval, 'blah');