Fix Trac #2467: decent warnings for orphan instances
authorsimonpj@microsoft.com <unknown>
Mon, 4 Aug 2008 16:21:29 +0000 (16:21 +0000)
committersimonpj@microsoft.com <unknown>
Mon, 4 Aug 2008 16:21:29 +0000 (16:21 +0000)
commitc2d0219ac359355d60d6ffac381e4051d79ad729
tree84b17a726864a33d75c0749289297551df89ead9
parentf098cfb236c17bcb3c46e39f9b1d7d8d8ca86003
Fix Trac #2467: decent warnings for orphan instances

This patch makes
  * Orphan instances and rules obey -Werror
  * They look nicer when printed
compiler/iface/MkIface.lhs
compiler/main/ErrUtils.lhs