Template Haskell Panic

[Mark Shields]

   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 6.0.1, for Haskell 
98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base ... linking ... done.
Prelude> do { x <- Language.Haskell.THSyntax.runQ $ reifyDecl (->); 
print x }
ghc-6.0.1: panic! (the `impossible' happened, GHC version 6.0.1):
        dsReify reifyDecl GHCziPrim.ZLzmzgZR {- tc 3D -}

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


Prelude>