[GHC] #4203: ghc-6.12.3 fails to compile xmonad-0.9.1 tests

[GHC]

#4203: ghc-6.12.3 fails to compile xmonad-0.9.1 tests
---------------------------------+------------------------------------------
    Reporter:  slyfox            |       Owner:                    
        Type:  bug               |      Status:  new               
    Priority:  normal            |   Component:  Compiler          
     Version:  6.12.3            |    Keywords:                    
          Os:  Unknown/Multiple  |    Testcase:  yet               
Architecture:  Unknown/Multiple  |     Failure:  Compile-time crash
---------------------------------+------------------------------------------

Comment(by slyfox):

 '''ghc-6.13.20100716''' compiles xmonad correctly and all 'xmonad --run-
 tests' passes all tests.

 Is it ghc-6.12-branch only resgression or it was fixed in -HEAD recently?
 I'd like to grab the patch from -HEAD.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4203#comment:1>
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