[GHC] #9163: Ptr should have a phantom role

[GHC]

#9163: Ptr should have a phantom role
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        Reporter:  simonpj                      |            Owner:
            Type:  bug                          |  goldfire
        Priority:  normal                       |           Status:  new
       Component:  Compiler                     |        Milestone:
      Resolution:                               |          Version:  7.8.2
Operating System:  Unknown/Multiple             |         Keywords:
 Type of failure:  None/Unknown                 |     Architecture:
       Test Case:  roles/should_compile/Roles2  |  Unknown/Multiple
        Blocking:                               |       Difficulty:
                                                |  Unknown
                                                |       Blocked By:
                                                |  Related Tickets:  #9164
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Comment (by Richard Eisenberg <eir@…>):

 In [changeset:"9e6c6b4206cd893434e49cd893eb67081eeffe99/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="9e6c6b4206cd893434e49cd893eb67081eeffe99"
 Make FunPtr's role be phantom; add comments.

 This change also updates castFunPtr to make it free at runtime.
 This fixes #9163.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9163#comment:25>
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