[GHC] #5589: Duplicate type signature not reported

[GHC]

#5589: Duplicate type signature not reported
--------------------------------+-------------------------------------------
    Reporter:  MikolajKonarski  |       Owner:                             
        Type:  bug              |      Status:  patch                      
    Priority:  normal           |   Component:  Compiler                   
     Version:  7.3              |    Keywords:                             
    Testcase:                   |   Blockedby:                             
          Os:  Linux            |    Blocking:                             
Architecture:  x86_64 (amd64)   |     Failure:  GHC accepts invalid program
--------------------------------+-------------------------------------------

Comment(by michalt):

 I should also mention that all the patches validate.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5589#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler