#13615: Wrong results from what supposed to be pure function with presense of parallel evaluation -------------------------------------+------------------------------------- Reporter: pacak | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.2.1 Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Interesting, forcing `st'` before passing it to `unsafeUpdateM` in the the `BitmapIndexed` branch of `Data.HashMap.Strict.unsafeInsertWith` also seems to fix the issue. I haven't thought much about why. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13615#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler