[GHC] #1939: GHC 6.8.1: Non-exhaustive patterns in function vectAlgCase, fixed in HEAD

[GHC]

#1939: GHC 6.8.1: Non-exhaustive patterns in function vectAlgCase, fixed in HEAD
----------------------+-----------------------------------------------------
 Reporter:  jedbrown  |          Owner:         
     Type:  bug       |         Status:  new    
 Priority:  normal    |      Milestone:         
Component:  Compiler  |        Version:  6.8.1  
 Severity:  minor     |       Keywords:         
 Testcase:            |   Architecture:  Unknown
       Os:  Multiple  |  
----------------------+-----------------------------------------------------
 When building the darcs ndp package (last rev Nov 23), I get this failure.
 Removing `-fvectorise` from Bools.hs allowed the package to compile.
 Indeed, this is fixed in HEAD (everything builds fine).  This ticket is
 just to make sure the fix makes it into the next release.

 {{{
 Preprocessing library ndp-0.1...
 Building ndp-0.1...
 [...]
 [72 of 75] Compiling Data.Array.Parallel.Prelude.Bool (
 Data/Array/Parallel/Prelude/Bool.hs,
 dist/build/Data/Array/Parallel/Prelude/Bool.o )
 ccTyCon: base:GHC.Base.Bool{(w) tc 3c}
 ccTyCon: base:GHC.Base.Bool{(w) tc 3c}
 ccTyCon: base:GHC.Base.Bool{(w) tc 3c}
 ccTyCon: base:GHC.Base.Bool{(w) tc 3c}
 ccTyCon: base:GHC.Base.Bool{(w) tc 3c}
 ghc-6.8.1: panic! (the 'impossible' happened)
   (GHC version 6.8.1 for i386-unknown-linux):
         vectorise/Vectorise.hs:(303,0)-(327,78): Non-exhaustive patterns
 in function vectAlgCase


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

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1939>
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