#6039: Ill-sorted kinds crash GHC
---------------------------------+------------------------------------------
Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
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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GHC's sort-checker for kinds is not being terribly clever
{{{
{-# LANGUAGE PolyKinds, KindSignatures #-}
module Foo where
data T (a :: j k) = MkT
}}}
crashes the HEAD with
{{{
ghc-stage1: panic! (the 'impossible' happened)
(GHC version 7.5 for x86_64-unknown-linux):
kindFunResult ghc-prim:GHC.Prim.BOX{(w) tc 347}
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6039>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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