[ ghc-Bugs-1254082 ] panic compiling classes

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Bugs item #1254082, was opened at 2005-08-08 20:41
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Category: Compiler
Group: 6.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Abrim (abrim)
Assigned to: Nobody/Anonymous (nobody)
Summary: panic compiling classes

Initial Comment:
$ ghc Bug.hs
ghc-6.4: panic! (the `impossible' happened, GHC version
6.4):
        ds_app_type Bug.Class1{tc r155} []

$ cat Bug.hs
module Bug where

class Class1 a where

class Class2 a where
  class1 :: a -> Class1



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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=1254082&group_id=8032