#7804: Ambiguity check too eager in presence of RankNTypes and TypeFamilies
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Reporter: goldfire | Owner:
Type: bug | Status: closed
Priority: normal | Milestone:
Component: Compiler | Version: 7.7
Resolution: fixed | Keywords:
AmbiguityCheck
Os: Unknown/Multiple | Architecture:
Unknown/Multiple
Failure: GHC rejects valid program | Difficulty: Unknown
Testcase: indexed-types/should_compile/T7804 | Blockedby:
Blocking: | Related:
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Changes (by simonpj):
* status: new => closed
* difficulty: => Unknown
* resolution: => fixed
* testcase: => indexed-types/should_compile/T7804
Comment:
Quite right! This was trickier than I thought and, as the comment says,
I'm still not happy. But this program should be fine, and it is now.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7804#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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