#7392: "the impossible happened" when compiling Types.Substitutions
 Reporter:  martindemello       |          Owner:                  
     Type:  bug                 |         Status:  new             
 Priority:  normal              |      Component:  Compiler        
  Version:  7.6.1               |       Keywords:                  
       Os:  Linux               |   Architecture:  Unknown/Multiple
  Failure:  Compile-time crash  |       Testcase:                  
Blockedby:                      |       Blocking:                  
  Related:                      |  
 Ran into this when trying to compile elm from git:

 $ cabal install
 Resolving dependencies...
 Configuring Elm-
 Building Elm-
 Preprocessing library Elm-
 [ 3 of 26] Compiling Types.Substitutions ( src/Types/Substitutions.hs,
 dist/build/Types/Substitutions.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.6.1 for i386-unknown-linux):
         compiler/codeGen/CgCase.lhs:572:15-61: Irrefutable pattern failed
 for pattern ((CoreSyn.DEFAULT,
                                         deflt_absC) : others)

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

 Failed to install Elm-

Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7392>
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