#15695: Core Lint error, from -fobject-code + defer type errors + pattern synonyms + other stuff -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"02b303eed0170983921877801e57f55d012db301/ghc" 02b303ee/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="02b303eed0170983921877801e57f55d012db301" Do not mark CoVars as dead in the occur-anal For years we have been marking CoVars as dead, becuase we don't gather occurrence info from types. This is obviously wrong and caused Trac #15695. See Note [Do not mark CoVars as dead] in OccurAnal. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15695#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler