#15226: GHC doesn't know that seq# produces something in WHNF -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Runtime | Test Case: performance bug | perf/should_run/T15226, 15226a Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4796 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): I'm going to re-open this because there are two loose ends: * Should `seq#` be strict? See comment:10 * Is it worth doing the "binder-swap" thing? See comment:6 and following. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15226#comment:21 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler