#13132: Compilation fails with a panic: get_op runContT -------------------------------------+------------------------------------- Reporter: PoroCYon | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by adamgundry): Thanks for tracking this down. It looks like `get_op` is missing a case for `HsRecFld`. The unambiguous case is easy, something like: {{{#!hs get_op (L _ (HsRecFld (Unambiguous _ n))) = n }}} That should fix the bug when `DuplicateRecordFields` is disabled, at least. Unfortunately the case for `Ambiguous` (which may arise when when `DuplicateRecordFields` is enabled) is harder, because we don't know which `Name` is meant. I'll try to take a look at this, but it may not be very soon. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13132#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler