#5862: Need kind annotations
---------------------------------+------------------------------------------
Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.4.1
Keywords: PolyKinds | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by simonpj@…):
commit e0c849e0596baa1be828faf7b7de0b34be002612
{{{
Author: Simon Peyton Jones <simo...@microsoft.com>
Date: Sun Mar 4 08:25:05 2012 +0000
Tidy up the handling of kind generalisation
In particular in forall abc. <blah> we should
kind generalise over <blah> as well as over the
kinds of a,b,c.
This fixes bug (in Trac #5862, caught by Lint) in the handling of
data SMaybe a where
SNothing :: SMaybe 'Nothing
where I didn't get a sufficiently general kind. And it's simpler.
compiler/typecheck/TcHsType.lhs | 45
+++++++----------------------------
compiler/typecheck/TcPat.lhs | 4 ++-
compiler/typecheck/TcTyClsDecls.lhs | 43
+++++++++++++++++----------------
3 files changed, 34 insertions(+), 58 deletions(-)
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5862#comment:6>
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