Bug 782782

This code on RHEL 6.0 will log two identical lines ('test') and this is OK.
On RHEL 6.2 this code will log different lines. And this is the BUG.

<script type="text/javascript">
    function xxx1(b){
        return function(){
            return b.apply(b,arguments);
        }
    }

    function xxx2(b){
        return function(){
            var yyy=arguments;
            return b.apply(b,arguments);
        }
    }

    function bbb(bbb_param) { console.log(bbb_param); }

    a = xxx1(bbb);
    a('test');

    b = xxx2(bbb);
    b('test');

</script>

That's why extjs (sencha) 4.0.7 web applications does not work in webkit in RHEL. For example, http://docs.sencha.com/ext-js/4-0 does not work with message '.... h.substring... is not a function' in RHEL 6.2, but successfully work in RHEL 6.0.

Also, RHEL 6.1 is also buggy (can not select two versions in bugtracker)

I think this is critical bug.