#5716: Failure when using promoted data family instances
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Reporter: dreixel | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.4.2
Component: Compiler | Version: 7.5
Resolution: | Keywords: PolyKinds
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Difficulty: Unknown
Testcase: polykinds/T5716 | Blockedby:
Blocking: | Related:
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Changes (by goldfire):
* cc: eir@… (added)
* owner: simonpj =>
* status: closed => new
* resolution: fixed =>
* version: 7.3 => 7.5
Comment:
The following (nonsensical) code still fails, with the same internal
error:
{{{
{-# LANGUAGE DataKinds, TypeFamilies #-}
data family Foo a
data instance Foo a = Bar (Bar a)
}}}
This was tested on 7.5.20120330, which handles polykinds/T5716 correctly.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5716#comment:5>
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