#1012: ghc panic with mutually recursive modules and template haskell -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: lowest | Milestone: Component: Template Haskell | Version: 6.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | TH_import_loop Blocked By: | Blocking: Related Tickets: #9032 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by mgsloan): * cc: mgsloan (added) Comment: I just ran into this as well. There is a fairly generic usecase that requires this: defining TH that generates instances of a class, and then using that TH to generate non-orphan instances. Pretty much the same as the usecase Richard outlines above. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/1012#comment:40 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler