[GHC] #7358: ghc: panic! (The 'impossible' happened) from RnSource.lhs

[GHC]

#7358: ghc: panic! (The 'impossible' happened) from RnSource.lhs
-------------------------------+--------------------------------------------
    Reporter:  jeffshaw        |        Owner:                    
        Type:  bug             |       Status:  closed            
    Priority:  normal          |    Component:  Compiler          
     Version:  7.4.2           |   Resolution:  duplicate         
    Keywords:                  |           Os:  Linux             
Architecture:  x86_64 (amd64)  |      Failure:  Compile-time crash
    Testcase:                  |    Blockedby:                    
    Blocking:                  |      Related:                    
-------------------------------+--------------------------------------------
Changes (by michalt):

  * status:  new => closed
  * resolution:  => duplicate


Comment:

 Thanks for reporting.  It seems to be a duplicate of #5951, which is
 already fixed.  With current HEAD you get something like:
 {{{
 [1 of 1] Compiling Test             ( Test.hs, Test.o )

 Test.hs:6:10: Malformed instance: A => A => A
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7358#comment:3>
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