#7176: Failure to let kind variable remain uninstantiated when not needed
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Reporter: goldfire | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.6.1-rc1
Keywords: PolyKinds TypeFamilies | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by simonpj):
* difficulty: => Unknown
Comment:
Aha. I have fixed this on the 7.6 branch thus:
{{{
commit 5133bb97a47340a9008615e412fcf62f7762bea8
Author: Simon Peyton Jones <[email protected]>
Date: Wed Aug 22 18:01:57 2012 +0100
Allocate a fresh META unique in newMetaKindVar
Fixes Trac #7176 on the branch. HEAD has a better fix
(the big patch to untouchable handling)
compiler/typecheck/TcMType.lhs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
}}}
Separate fix for HEAD coming
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7176#comment:1>
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