On Tue, Nov 8, 2011 at 3:46 PM, Mark S. Miller <[email protected]> wrote:
> > > On Tue, Nov 8, 2011 at 3:33 PM, David Herman <[email protected]> wrote: > >> Perhaps __proto__ should not be writeable in "use strict"? >>> >> >> That's a great idea! This never occurred to me, and I have not heard >> anyone suggest this. Thanks! >> >> >> Doesn't work. >> >> obj[(function(__){return __ + "proto" + __})("__")] >> > > If the "[" above is a strict "[", it should not be able to address > "__proto__", regardless of whether the "__proto__" is computed or not. > Or if we intend only to suppress writing, then > > obj[(function(__){return __ + "proto" + __})("__")] = {} > > should still fail if the "[" above is in strict code. > Sorry, it should not fail. It should simply create a normal property that happens to be named "__proto__". Likewise, your first example should simply address such a normal property. Then JSON would again be an almost-subset of ES5/strict, modulo \u2028 and \u2029. > > > >> >> Dave >> >> > > > -- > Cheers, > --MarkM > -- Cheers, --MarkM
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