#13614: Rewrite rules not applied exhaustively when simplifying from plugin -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHC API | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): It's not just that they aren't getting applied; somehow `foo 1` is getting rewritten to `foo 2` which is deeply strange. I have no hypothesis here. I'm not sure why you are simplifying twice. You don't seem to be doing occurrence analysis, although I can't see how that will lead to this behaviour. Try `-ddump-rule-rewrites`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13614#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler