#7436: Derived Foldable and Traversable instances become extremely inefficient due to eta-expansion --------------------------------------+------------------------------------- Reporter: shachaf | Owner: Type: bug | Status: merge Priority: normal | Milestone: 7.6.3 Component: Compiler | Version: 7.6.1 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: Runtime performance bug | Difficulty: Unknown Testcase: perf/should_runt/T7436 | Blockedby: Blocking: | Related: --------------------------------------+------------------------------------- Comment(by simonpj): This one is fixed, just awaiting merging into 7.6.3 -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7436#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler