#7599: timeout does not behave as expected ----------------------------------------+----------------------------------- Reporter: ique | Owner: Type: bug | Status: new Priority: normal | Component: libraries/base Version: 7.6.1 | Keywords: System.Timeout timeout base-4.6 Os: MacOS X | Architecture: x86_64 (amd64) Failure: Incorrect result at runtime | Blockedby: Blocking: | Related: ----------------------------------------+----------------------------------- In trying to debug an error I found using the MongoDB package (it was refusing connections) I found what I believe is a bug with System.Timeout. When connecting with connectTo I immediately get a handle, wrapped in timeout with a positive timeout, it instantly returns Nothing. When using a negative timeout (wait indefinitely) it instantly returns the proper Handle. Below is a minimal test-case that I ran in ghci. Import System.Timeout Import Network timeout (-1) $ connectTo "127.0.0.1" (PortNumber 27017) -- This returns: Just {handle: } timeout 1000000 $ connectTo "127.0.0.1" (PortNumber 27017) -- This returns Nothing -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7599 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler