#11371: Bogus in-scope set in substitutions -------------------------------------+------------------------------------- Reporter: simonpj | Owner: niteria Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #11360 | Differential Rev(s): phab:D1792, Wiki Page: | phab:D1801, phab:D1802 -------------------------------------+------------------------------------- Comment (by goldfire): Replying to [comment:16 simonpj]:
Richard, can you see anything wrong with that?
Not at all. I very nearly did that myself a while ago, but it meant some code duplication around `instSkolTyCoVarX` (and perhaps one other place, if memory serves -- I'm sure you'll find it by looking at use sites of `extendTCvSubst`). Yes -- go for it. This is an improvement. The comment about `tcCoercionToCoercion` is historical and should be removed, along with that case, which should indeed never be triggered now. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11371#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler