#9880: ghc crashes on th splices in instance context -------------------------------------+------------------------------------- Reporter: Philonous | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by goldfire): The behavior you see -- that error -- is what I'd expect. I had a brief go at implementing local declaration splices but soon realized that implementing this involves quite a bit of replumbing. The splices would have to break up mutually-recursive groups within class, instance, and `let` declarations, and that would require changes to several bits of HsSyn. So, I settled for just fixing the panic and waiting for someone to scream loudly that they need this feature. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9880#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler