#6069: Rank 2 Polymorphism Compile Error
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Reporter: clinton | Owner: simonpj
Type: bug | Status: new
Priority: normal | Milestone: 7.8.1
Component: Compiler | Version: 7.4.1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by simonpj):
Really all three should be rejected without `-XImpredicativeTypes`,
because all require instantiating `(.)` at a polymorphic type. The
inconsistent behaviour is a bug.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6069#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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