#9582: Associated Type Synonyms do not unfold in InstanceSigs -------------------------------------+------------------------------------- Reporter: | Owner: andreas.abel | Status: patch Type: bug | Milestone: Priority: normal | Version: 7.8.3 Component: Compiler | Keywords: InstanceSigs (Type checker) | TypeFamilies Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by simonpj): The hack is horrible! I suggest instead replacing the `CtOrigin` arg to `tcSubPat` with `BasicTypes.SwapFlag`. If `NotSwapped` then `ty1` is acutal, `ty2` is expected; if `Swapped` then the other way round. That would make all the other calls more perspicuous too. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9582#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler