#5012: haskell 98 program does not typecheck when compiled with -XTypeFamilies
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  Reporter:  jcpetruzza                 |          Owner:                  
      Type:  bug                        |         Status:  closed          
  Priority:  normal                     |      Milestone:                  
 Component:  Compiler (Type checker)    |        Version:  7.0.2           
Resolution:  invalid                    |       Keywords:                  
  Testcase:                             |      Blockedby:                  
Difficulty:                             |             Os:  Unknown/Multiple
  Blocking:                             |   Architecture:  Unknown/Multiple
   Failure:  GHC rejects valid program  |  
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Comment(by simonpj):

 You can also use `-XNoMonoLocalBinds` (after the `-XTypeFamilies`).  With
 high probability it will work just fine; but the flag imposes some
 compromises on the type checker, which is why it's off by default.

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5012#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

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