[GHC] #9878: Static pointers in GHCi cause panic

[GHC]

#9878: Static pointers in GHCi cause panic
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              Reporter:  monoidal    |            Owner:  facundo.dominguez
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  GHCi crash  |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by mboes):

 > the universe of static forms that exist in the program is fixed at
 compile time and constant throughout the lifetime of the program.

 BTW, the current type for `deRefStaticPtr` is borne out of this
 assumption. If this assumption must be dropped, then `deRefStaticPtr` must
 be put in the `IO` monad. That is, its type should become:

 {{{
 deRefStaticPtr :: ... -> IO (StaticPtr a)
 }}}

 I'm not sure this is desirable. As I recall Simon PJ was also keen to keep
 `deRefStaticPtr` pure. So this design decision could be revised, but I for
 one would prefer to see how people really use the extension first.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9878#comment:15>
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