ghc-2.01 in knots.

[Alex Ferguson]

Has anyone found a problem with (erroneously, in my case) knot-tied
structed pattern matching?  I got a bus error (eek) from a fragment
of the form:

blah b = ... x ...
         where
         [x] = ... [x] ...

While I'm fairly sure this is what caused the problem, (I did a clean
rebuild, so I can't have been a linking problem), I can't reproduce
the error in a simple canonical case, at least yet.

Alex.