#12620: Allow the user to prevent floating and CSE -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #9520, #8457 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by tomjaguarpaw): Edsko, it seems to me that the problem that you mention here is quite easy to avoid. {{{#!hs main :: IO () main = retry $ return () >>= \_ -> ni_mapM_ print [1..1000000] }}} is sufficient, unless I am very much mistaken. With such a construction the list is allocated afresh for each invocation of the `IO` action. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12620#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler