On 6 June 2011 16:43, Max Bolingbroke <batterseapower at hotmail.com> wrote: > The suggested fix is to change HUnit to define assertFailure with > throwIO, but the latest source code still uses throw: Err, I mean http://hackage.haskell.org/packages/archive/HUnit/latest/doc/html/src/Test-HUnit-Lang.html