#12797: Default Rules stop working when providing some constraints -------------------------------------+------------------------------------- Reporter: danilo2 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: 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 danilo2): Some notes from #ghc IRC: The error can be reproduced in GHC 7.10.3 (after adding `-XDataKinds`). It never even gets to the rewrites, apparently (compiling with -O0 so no RULES). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12797#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler