#7982: ASSERT failed: TcCanonical:520 for kind-checking unsaturated type families -----------------------------+---------------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.7 | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking: | Related: -----------------------------+---------------------------------------------- {{{ {-# LANGUAGE TypeFamilies, PolyKinds #-} type family Foo (x :: k) }}} {{{ ghci> :k Foo *** Exception: ASSERT failed! file compiler/typecheck/TcCanonical.lhs, line 520 }}} This was tested on a checkout from 22 May. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7982 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler