Comment #14 on issue 1931 by [email protected]: v8 ignores writable flag on arrays
http://code.google.com/p/google-caja/issues/detail?id=1931

v8 properly prevents popping in the following, but issues the wrong error:

a=[7,8,9];
Object.defineProperty(a,2,{configurable:false});
a.pop();
// throws TypeError: Cannot define property:2, object is not extensible.
// instead of TypeError: Cannot delete property '2' of [object Array]


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