Updates:
        Status: Assigned
        Owner: [email protected]
        Cc: [email protected]
        Labels: Type-Bug Priority-Medium Harmony

Comment #1 on issue 3970 by [email protected]: Symbol may not be used as a WeakSet entry
https://code.google.com/p/v8/issues/detail?id=3970

Relevant part of the spec:
  4. If Type(value) is not Object, throw a TypeError exception.

I remember Andreas arguing for allowing Symbols here. But the spec draft seems pretty clear about it, so I'll let him be the judge of it. The following is the change that allowed Symbols to pass (note that WeakSet wasn't implemented in V8 back then).

https://codereview.chromium.org/12456004

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