[GHC] #12622: Unboxed static pointers lead to missing SPT entries

[GHC]

#12622: Unboxed static pointers lead to missing SPT entries
-------------------------------------+-------------------------------------
        Reporter:  mboes             |                Owner:
                                     |  facundo.dominguez
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by facundo.dominguez):

 * owner:  facundominguez => facundo.dominguez
 * cc: facundominguez (removed)
 * cc: facundo.dominguez, simonpj (added)


Comment:

 One simple solution could be to redefine `StaticPtr` to something like
 {{{
 data StaticPtr a = StaticPtr {-# NOUNPACK #-} !(StaticPtr' a)
 data StaticPtr' a = StaticPtr' Word# Word# StaticPtrInfo a
 }}}

 This would yield the `StaticPtr` data constructor from being eliminated
 due to unboxing.

 Another solution would be to tell the compiler never to unbox a field of
 type `StaticPtr`. Not sure how easy this would be. simonpj?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12622#comment:3>
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