Comment #3 on issue 3356 by erights: Array.shift ignores writable attribute.
http://code.google.com/p/v8/issues/detail?id=3356

Probing for such problems, I am only finding them for shift and unshift (visit http://es-lab.googlecode.com/svn/trunk/src/ses/contract.html or see attached screenshot . For sources of these tests, at the moment see the green of https://codereview.appspot.com/124480043/diff/20001/src/com/google/caja/ses/repairES5.js ).

The "repair" shown in this screenshot and the sources replaced shift & unshift with a behavior coded in terms of splice. This fixes all the problems.

Attachments:
        Screen Shot 2014-08-18 at 7.08.46 AM.png  148 KB

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