#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): Oh no. What I was trying to say is that (3) seems to be responsible; I could write an `FV` flavor to verify it, but it would amount to pretty much just `VarSet`, just wrapped in a record together with two other fields that we won't use. In theory it should be interesting to take our FV and *only* change (3), but keep (1) and (2), except that we already suspected that neither of them does anything significant here, and we have already ruled them out as culprits individually. But I'll do it anyway, even if it's just to make sure I didn't miss anything in embarrassing ways. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14880#comment:90 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler