{- From: Wolfgang Drotschmann Resent-Date: Thu, 15 May 1997 17:23:09 +0100 I'm still using the old ghc-2.01. In one program I ran into a problem I couldn't fix. But I played around with it, I found a small little script which reproduces it very well: panic! (the `impossible' happened): tlist -} module TcFail where type State = ([Int] Bool)