[Redirecting to haskell-cafe] Try http://www.haskell.org/ghc/docs/latest/html/users_guide/flag-reference.html#... With -Wall I get bash-3.2$ ghc -c -Wall Foo.hs Foo.hs:3:0: Warning: Definition but no type signature for `func' Inferred type: func :: forall t t1. (Num t1) => t -> t1 Foo.hs:3:5: Warning: Defined but not used: `x' Foo.hs:4:10: Warning: This binding for `x' shadows the existing binding bound at Foo.hs:3:5 | -----Original Message----- | From: cvs-ghc-bounces@haskell.org [mailto:cvs-ghc-bounces@haskell.org] On Behalf Of | Grigory Sarnitskiy | Sent: 21 March 2010 19:37 | To: cvs-ghc@haskell.org | Subject: No warning in GHC | | Hello! I wonder, why GHC shows no warning in situations like | | func x = x | where x = 5 | | Sometimes I forget about argument names used, and use the same names in let or where. | And it can take me quite a lot time to understand what is wrong. I think it would be | nice to warn users if the argument is "redefined" in let/where clause. Shall I report | a bug/feature request? I'm using ghc 6.10.4. | | btw, I couldn't post to IRC: #ghc :Cannot send to channel | | _______________________________________________ | Cvs-ghc mailing list | Cvs-ghc@haskell.org | http://www.haskell.org/mailman/listinfo/cvs-ghc