[GHC] #10744: Allow oneShot to work with unboxed types

[GHC]

#10744: Allow oneShot to work with unboxed types
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        Reporter:  akio              |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by nomeata):

 Simon, I am worried that due to a wrong annotation here, a thunk is marked
 as single entry that is not really single entry, and I can imagine that
 bad things can happen then. But if you think that this cannot happen, then
 I’d be relieved, and akio can go forwared using `oneShot`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10744#comment:9>
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