[GHC] #1595: duplicate "not in scope" error when giving multiple vars type-signatures at once

[GHC]

#1595: duplicate "not in scope" error when giving multiple vars type-signatures at
once
---------------------------------+------------------------------------------
    Reporter:  Isaac Dupree      |        Owner:  michalt                          
        Type:  bug               |       Status:  patch                            
    Priority:  normal            |    Milestone:  _|_                              
   Component:  Compiler          |      Version:  6.6.1                            
    Keywords:                    |     Testcase:                                   
   Blockedby:                    |   Difficulty:  Unknown                          
          Os:  Unknown/Multiple  |     Blocking:                                   
Architecture:  Unknown/Multiple  |      Failure:  Incorrect warning at compile-time
---------------------------------+------------------------------------------

Comment(by waern):

 Replying to [comment:13 simonpj]:
 > David: thanks.  We need to simultaneously commit to GHC and Haddock or
 builds will fail. Will you validate and commit to GHC as well as Haddock?
 >
 > Simon

 I tried to apply the GHC patch but got stuck on an evil conflict in
 `TcClassDcl.tcClassSigs` which I couldn't see how to fix easily.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1595#comment:14>
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