[GHC] #12000: static pointer in ghci

[GHC]

#12000: static pointer in ghci
-------------------------------------+-------------------------------------
        Reporter:  Iceland_jack      |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Documentation     |              Version:  8.1
      Resolution:                    |             Keywords:
                                     |  StaticPointers
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #9878             |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by facundo.dominguez):

 I'm testing the master branch of GHC.

 I can reproduce this without using the static form.

 {{{
 Prelude> c = 'a'
 Prelude> c

 <interactive>:9:1: error: Variable not in scope: c
 }}}

 The crash reported later, I can't see.

 {{{
 > let a = static id
 Prelude> a

 <interactive>:6:1: error:
     • No instance for (Data.Typeable.Internal.Typeable a0)
         arising from a use of ‘it’
     • In a stmt of an interactive GHCi command: print it

 }}}

 That said, the static pointers produced in GHCi can only be found later if
 they are created in compiled (and later loaded) modules. Entering a static
 form at the prompt won't make it.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12000#comment:3>
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