[GHC] #6073: Lower case character in deriving statement crashes GHC 7.4.1

[GHC]

#6073: Lower case character in deriving statement crashes GHC 7.4.1
--------------------------------+-------------------------------------------
 Reporter:  ExternalReality     |          Owner:                
     Type:  bug                 |         Status:  new           
 Priority:  normal              |      Component:  Compiler      
  Version:  7.4.1               |       Keywords:                
       Os:  Unknown/Multiple    |   Architecture:  x86_64 (amd64)
  Failure:  Compile-time crash  |       Testcase:                
Blockedby:                      |       Blocking:                
  Related:                      |  
--------------------------------+-------------------------------------------
 -- Good

 newtype Address   = Address Text
     deriving (Show, Eq)

 -- Boom

 newtype Address   = Address Text
     deriving (Show,x Eq)

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6073>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler