Please open a support case on this with specific repro details, specific c library versions, etc and let me know the case ID here. Would you also provide the same repro details here so we can get a jump on investigating it?
@Doug Chasman : We are facing the same issue. Thank you very much for your quick help. But the same thing works with LockerService prerelease orgs. We see the problem only when we activate LockerService in existing orgs (tested in Sandbox only) as the main release is scheduled this weekend.
Also, I appreciate if you can help us with any alternate solution for the time being. Any ETA to add the Option ctor.