#7791: Bad error message when strictness annotations are used without
BangPatterns
pragma
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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:
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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.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7791#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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