#4047: Incorrect unused-import warning in ghci
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Reporter: Berengal | Owner:
Type: bug | Status: closed
Priority: normal | Milestone:
Component: GHCi | Version: 6.12.1
Resolution: worksforme | Keywords:
Difficulty: | Os:
Unknown/Multiple
Testcase: | Architecture:
Unknown/Multiple
Failure: Incorrect warning at compile-time |
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Changes (by simonpj):
* status: new => closed
* resolution: => worksforme
Comment:
I believe you may be misled by two things:
* `ghc --make` does not recompile things that have already been compiled,
and that can lead to lack of warnings if you do `ghc --make` right after
(say) your `ghci` run. Try adding `-fforce-recomp`
* `undefined` is not a keyword: it is simply a named definition that is
indeed imported from the Prelude. So there really is a difference between
`[]` and `undefined` on the RHS of your definition.
Everything seems to be working fine to me. If you still thing there's a
bug, by all means re-open this.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4047#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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