Infinite loop when showing type family error
When attempting to load this code in ghci with ghc-8.0.1, I get an infinite loop while it attempts to display the error:
{-# LANGUAGE TypeFamilies #-}
class C a where
type family F a t :: *
type family T a :: *
type T a = F a
catbug :: ~/Scratch/ast-experiment » ghci test.hs
GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help
Loaded GHCi configuration from /Users/trevor/.ghci
[1 of 1] Compiling Main ( test.hs, interpreted )
test.hs:7:14: error: