[GHC] #4349: ASSERT failed! file compiler/types/FamInstEnv.lhs

[GHC]

#4349: ASSERT failed! file compiler/types/FamInstEnv.lhs
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    Reporter:  daniel.is.fischer  |       Owner:                     
        Type:  bug                |      Status:  new                
    Priority:  normal             |   Component:  Compiler           
     Version:  7.1                |    Keywords:                     
    Testcase:                     |   Blockedby:                     
          Os:  Linux              |    Blocking:                     
Architecture:  x86                |     Failure:  Building GHC failed
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Comment(by daniel.is.fischer):

 !BuildError.txt is what the console remembered of the output.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4349#comment:1>
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