#14880: GHC panic: updateRole -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler (Type | Version: 8.2.2 checker) | Resolution: | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #15076 | Differential Rev(s): Phab:D4769 Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): I guess my "bake into `VarSet`" idea was essentially to take the `FV` module and combine it into the `VarSet` module, making clear that the FV- derived functions are the right way to incrementally build up a `VarSet`. It's kind of like we know to build up a `String` using higher-order functions, not `++` -- but we should make it very clear, right in the `VarSet` module. Going even further, I imagine this would generalize to any `Map` and might be good to incorporate into `containers`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14880#comment:96 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler