#14220: GeneralizedNewtypeDeriving and polymorphic arguments don't play nicely together ---------------------------------+-------------------------------------- Reporter: ivanm | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #12104 | Differential Rev(s): Wiki Page: | ---------------------------------+-------------------------------------- Changes (by RyanGlScott): * related: => #12104 Comment: Thanks for the bug report. Note that this only happens when `-fdefer-type- errors` is on. This is a duplicate of #12104, which has been fixed in GHC 8.2.1. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14220#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler