[GHC] #5970: Type checker hangs

[GHC]

#5970: Type checker hangs
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    Reporter:  Lemming                  |       Owner:                              
        Type:  bug                      |      Status:  infoneeded                  
    Priority:  normal                   |   Milestone:                              
   Component:  Compiler (Type checker)  |     Version:  7.4.1                       
    Keywords:                           |          Os:  Linux                       
Architecture:  x86                      |     Failure:  Compile-time performance bug
  Difficulty:  Unknown                  |    Testcase:                              
   Blockedby:                           |    Blocking:                              
     Related:                           |  
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Comment(by Lemming):

 I invested some more hours in order to check whether the bug is still
 present in ghc-7.5.20120510. Unfortunately, it is still there. I needed
 most of the time to find out that I ran into a new Cabal bug
 (http://hackage.haskell.org/trac/hackage/ticket/950).
 Additionally I branched my repositories and converted most of the
 functional dependencies to type families. GHC can compile all converted
 modules as quickly as usually. So this ticket becomes less important for
 me. I plan to prepare a small experience report for Haskell-Cafe.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5970#comment:11>
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