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

11 Dec 2014

      #9878: Static pointers in GHCi cause panic
-------------------------------------+-------------------------------------
       Reporter:  monoidal           |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Compiler           |                 Version:  7.9
       Keywords:                     |        Operating System:
   Architecture:  Unknown/Multiple   |  Unknown/Multiple
     Difficulty:  Unknown            |         Type of failure:  GHCi crash
     Blocked By:                     |               Test Case:
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
 I load this module into ghci

 {{{#!hs
 {-# LANGUAGE StaticPointers #-}
 module Static where

 import GHC.StaticPtr
 f = deRefStaticPtr (static True)
 }}}

 and get a panic upon evaluating `f`

 {{{
...
f
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.9.20141210 for x86_64-unknown-linux):
         Loading temp shared object failed: /tmp/ghc30486_0/ghc30486_5.so:
 undefined symbol: Static_sptEntryZC0_closure
Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

 Am I doing static pointers right?

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9878
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