[GHC] #9683: ghc: panic! (the 'impossible' happened) [Cant do annotations without GHCi]

[GHC]

#9683: ghc: panic! (the 'impossible' happened) [Cant do annotations without GHCi]
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       Reporter:  jeffmaner  |                   Owner:
           Type:  bug        |                  Status:  new
       Priority:  normal     |               Milestone:
      Component:  Compiler   |                 Version:  7.4.1
       Keywords:             |        Operating System:  Linux
   Architecture:  arm        |         Type of failure:  None/Unknown
     Difficulty:  Unknown    |               Test Case:
     Blocked By:             |                Blocking:
Related Tickets:             |  Differential Revisions:
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 The Haskell Platform instructed me to report this as a bug. :)

 I'm trying to install The Haskell Platform on my Samsung Chromebook, using
 the wheezy chroot (armv7l GNU/Linux).

 Actually, I'm trying to install Elm. I've installed the Platform.

 Installing Elm via
 `cabal install Elm-0.13 elm-repl-0.3 elm-reactor-0.1 elm-get-0.1.3`
 , I eventually encounter:

 [ 3 of 19] Compiling Data.Vector.Fusion.Stream.Size (
 Data/Vector/Fusion/Stream/Size.hs,
 dist/build/Data/Vector/Fusion/Stream/Size.o )

 Data/Vector/Fusion/Stream/Size.hs:25:10:
     Warning: No explicit method nor default method for `*'
     In the instance declaration for `Num Size'

 Data/Vector/Fusion/Stream/Size.hs:25:10:
     Warning: No explicit method nor default method for `abs'
     In the instance declaration for `Num Size'

 Data/Vector/Fusion/Stream/Size.hs:25:10:
     Warning: No explicit method nor default method for `signum'
     In the instance declaration for `Num Size'
 [ 4 of 19] Compiling Data.Vector.Internal.Check (
 Data/Vector/Internal/Check.hs, dist/build/Data/Vector/Internal/Check.o )
 [ 5 of 19] Compiling Data.Vector.Fusion.Stream.Monadic (
 Data/Vector/Fusion/Stream/Monadic.hs,
 dist/build/Data/Vector/Fusion/Stream/Monadic.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.4.1 for arm-unknown-linux):
         Cant do annotations without GHCi
     {Data/Vector/Fusion/Stream/Monadic.hs:104:19-33}
     base:GHC.Exts.ForceSpecConstr{d raqj}

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

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9683>
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