What was the name of the flag for ghc-7.0.1? I did not find it in the documentation. -fwarn-incomplete-patterns does not work for my lambda expressions. Cheers Christian Am 22.09.2010 18:05, schrieb Simon Peyton-Jones:
Good point. Simon and I have decided we agree. I'll push a patch shortly.
S
| -----Original Message----- | From: glasgow-haskell-users-bounces@haskell.org [mailto:glasgow-haskell- | users-bounces@haskell.org] On Behalf Of Mitar | Sent: 21 September 2010 07:44 | To: glasgow-haskell-users | Subject: Non-exhaustive pattern match(es) warning in lambda functions | | Hi! | | Why GHC does not warn (with -Wall) about non-exhaustive pattern | match(es) warning in lambda functions? For example, this code: | | data Foo = Bar | Baz | | test1 :: Foo -> IO () | test1 Bar = return () -- Pattern match(es) are non-exhaustive warning, OK | | test2 :: Foo -> IO () | test2 = \Bar -> return () -- No pattern match(es) are non-exhaustive, BAD | | I think it would be quite useful to also catch such situations and | issue a warning. | | | Mitar