#5514: bad variable escape analysis when TypeFamilies are enabled
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    Reporter:  dmwit             |       Owner:              
        Type:  bug               |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  7.3               |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
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Comment(by dmwit):

 Actually, the example can be made even a bit simpler by replacing the line

 {{{instance (Foo a, Foo b) => Foo (a, b) where}}}

 by the line

 {{{instance Foo [a] where}}}

 if that simplification seems helpful.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5514#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

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