#5277: Clash between RankNTypes and TypeFamilies
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Reporter: stefan | Owner:
Type: bug | Status: closed
Priority: normal | Milestone:
Component: Compiler | Version: 7.0.3
Resolution: invalid | Keywords: rank-n types, type
families, type signatures
Testcase: | Blockedby:
Difficulty: | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: GHC rejects valid program |
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Changes (by simonpj):
* status: new => closed
* resolution: => invalid
Comment:
Yes, this is a gotcha with type families. See:
[http://haskell.org/haskellwiki/GHC/Indexed_types#Frequently_asked_questions].
I don't know how to improve matters.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5277#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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