[GHC] #9186: GHC panic when compiling compdata

[GHC]

#9186: GHC panic when compiling compdata
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        Reporter:  snoyberg          |            Owner:
            Type:  bug               |           Status:  new
        Priority:  highest           |        Milestone:  7.8.3
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Description changed by simonpj:

Old description:

> When testing ghc-7.8.2.20140609 with Stackage, I came across the
> following ghc panic:
>
> [51 of 62] Compiling Data.Comp.Ordering ( src/Data/Comp/Ordering.hs,
> dist/build/Data/Comp/Ordering.o )
> ghc: panic! (the 'impossible' happened)
>   (GHC version 7.8.2.20140609 for x86_64-unknown-linux):
>     Loading temp shared object failed: /tmp/ghc4836_0/ghc4836_257.so:
> undefined symbol:
> compdatazm0zi8zi1zi0_DataziCompziDeriveziUtils_zdwabstractConType_info
>
> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
>
> Failed to install compdata-0.8.1.0

New description:

 When testing ghc-7.8.2.20140609 with Stackage, I came across the following
 ghc panic:
 {{{
 [51 of 62] Compiling Data.Comp.Ordering ( src/Data/Comp/Ordering.hs,
 dist/build/Data/Comp/Ordering.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.8.2.20140609 for x86_64-unknown-linux):
     Loading temp shared object failed: /tmp/ghc4836_0/ghc4836_257.so:
 undefined symbol:
 compdatazm0zi8zi1zi0_DataziCompziDeriveziUtils_zdwabstractConType_info

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

 Failed to install compdata-0.8.1.0
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9186#comment:6>
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