#7536: Panic with TypeFamilies with type synonym instances
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Reporter: snowleopard | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Compile-time crash | Blockedby:
Blocking: | Related:
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Comment(by rotsor):
I've been able to also reproduce it without type classes:
{{{
{-# LANGUAGE TypeFamilies #-}
module M where
type T v = Int
type family TF a :: *
type instance TF (T a) = a
panic :: TF Int
panic = undefined
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7536#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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