#6159: unexpected GADT kind error
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Reporter: kosmikus | Owner:
Type: bug | Status: closed
Priority: normal | Milestone:
Component: Compiler | Version: 7.5
Resolution: invalid | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: GHC rejects valid program | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related:
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Comment(by kosmikus):
Thanks for the quick reply.
The documentation makes it clear, but it isn't the place I'd have looked
at. I'm not using kind polymorphism, nor am I using recursion.
The documentation also says: "you get kind * -- if you want to get
polymorphism, use an explicit annotation". But I don't want polymorphism.
I want the type checker to infer "* -> *" for f.
So all in all, the current system seems more restrictive than the value-
level inference, as I don't get even monomorphic types inferred anymore.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6159#comment:2>
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