ghc-6.0 on win32 panic

Dear Sir or Madam:

I was going to define a function within ghci, and the messages of
panic showed:

---
Prelude> let f 1 = 1
C:\ghc\ghc-6.0\bin\ghc.exe: panic! (the `impossible' happened, GHC
                                        version 6.0):

        getLinkDeps No iface for [<pkg>]GHCziErr

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

---

It seems that one can't define a function piece-wise within ghci.

The problem doesn't arise in ghc5 (on Debian).


Vincent