#7791: Bad error message when strictness annotations are used without BangPatterns pragma ----------------------------------------------+----------------------------- Reporter: manzyuk | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.4.1 | Keywords: Os: Linux | Architecture: x86_64 (amd64) Failure: Incorrect warning at compile-time | Blockedby: Blocking: | Related: ----------------------------------------------+----------------------------- Comment(by monoidal): The error message is correct, since without extensions, the declaration `go ! k = ...` defines an operator called `!` (analogously to `go * k = ...`) and therefore `go` is out of scope in line 1. You can get a nice suggestion if you write `go (!k) = ...` or `go !k !l = ...`. It's hard to expect GHC to deduce from context whether a syntactically-correct `go ! k = ...` was meant to be something different. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7791#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler