#13859: Bad error message when compacting a Compact# -------------------------------------+------------------------------------- Reporter: andrewthad | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by andrewthad): The `Compactable` class would be nice for most users, and provided that the instances are generated by GHC (like Typeable and Coercible). Also in my situation, it would still be nice to get a better runtime error since I'm doing dangerous stuff by thawing arrays on the compact heap. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13859#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler