Ill-sorted kinds crash GHC
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}
Trac metadata
Trac field | Value |
---|---|
Version | 7.4.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |