A broken QuickCheck property cause ghci to panic afterreloading the module. Seen in stable and head branch.paprika$ ghci T.hs*Main> do_test test : * (0)*Main> :reloadghc-6.5: panic! (the `impossible' happened, GHC version6.5): <<loop>>Please report it as a compiler bug toglasgow-haskell-bugs@haskell.org,or http://sourceforge.net/projects/ghc/.Changing the property to check for empty lists causesthe test to pass, and reload to work fine.-- Don Stewart