ghc 6.4 panic

The the bug is repeatable at least on my machine.

If there is a cure for this I would be happy to hear about it as I'll have 
to finish this for a course I'm taking.

EiffelSymtable.hs is included

 -Sakari
--------------------
ghc -fno-monomorphism-restriction --make parse_test.hs -o parse_test
Chasing modules from: parse_test.hs
Skipping  EiffelLexer      ( ./EiffelLexer.hs, ./EiffelLexer.o )
Skipping  EiffelLayout     ( ./EiffelLayout.hs, ./EiffelLayout.o )
Skipping  EiffelAST        ( ./EiffelAST.hs, ./EiffelAST.o )
Compiling EiffelSymtable   ( ./EiffelSymtable.hs, ./EiffelSymtable.o )
ghc-6.4: panic! (the `impossible' happened, GHC version 6.4):
        Unify.unifyTauTyLists: mismatched type lists!

Please report it as a compiler bug to glasgow-haskell-bugs@xxxxxxxxxxx,
or http://sourceforge.net/projects/ghc/.


make: *** [parse_test] Error 1

Compilation exited abnormally with code 2 at Thu Apr 28 16:34:29

EiffelSymtable.hs
Description: an offending file

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