#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 tdammers): NonDetFV (`NDFV`) speed / allocations test still running. While writing the code for `NDFV`, one thing caught my eye however: the `delFV` / `delFVs` functions, rather than actually remove anything from the `have` list and the `haveSet`, *add* to the `in_scope` set; naturally, rewriting this in terms of `VarSet`, where the `delVarSet` function actually removes the var from the set, will change performance characteristics, one way or the other, depending on the situation. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14880#comment:81 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler