Exhaustive Pattern-Matching

Simon Marlow simonmar@microsoft.com
Fri, 29 Aug 2003 09:43:33 +0100

> On Wed, Aug 27, 2003 at 04:57:27PM +0100, Simon Marlow wrote:
> > GHC tries to do so, but sometimes gets it wrong.  See the
> > -fwarn-incomplete-patterns flag.  We'd appreciate it if=20
> someone could
> > overhaul this code - it's been on the wish list for a long time.
> As a matter of curiosity, do you have some examples as to when GHC
> gets it wrong?

There's one in the bug database:


And I think a couple more have been reported on ghc-bugs, Google should
be able to find them.