#14991: GHC HEAD regression involving TYPEs in type families -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: goldfire Type: bug | Status: new Priority: high | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.5 checker) | Keywords: TypeInType, Resolution: | TypeFamilies Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): I figured this one out. It turns out that `solveEqualities` needs to use `simpl_top`. In my recent patch, I thought I could get away with `solveWanteds`, and no test cases told me I couldn't. Easy enough to fix. Validating now. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14991#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler