#7299: threadDelay broken in ghci, Mac OS X ---------------------------------+------------------------------------------ Reporter: tmcdonell | Owner: igloo Type: bug | Status: new Priority: highest | Milestone: 7.6.2 Component: GHCi | Version: 7.6.1 Keywords: | Os: MacOS X Architecture: Unknown/Multiple | Failure: GHCi crash Difficulty: Unknown | Testcase: Blockedby: 3658 | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by thorkilnaur): I should mention that I am working on identifying the patch(es) that introduced this problem. The problem is reproducible on my Intel Mac OS X 10.5 (the tn23 builder), sometimes as segmentation faults, but more often as no apparent wait when threadDelay is called via ghci. I am using the tn23 builds as "synchronization points". Using the "repo versions" reported for each build, I have been able to, with some adjustments, to reproduce successful builds and, not least, avoid unsuccessful ones. So far, I have been able to narrow the problem as being introduced between tn23 build 599 (http://darcs.haskell.org/ghcBuilder/builders/tn23/599.html) and build 600 (http://darcs.haskell.org/ghcBuilder/builders/tn23/600.html). (Build 599 is a failed build, but it is possible to repair by applying the changes of patch "da102b36bfee605d4849ab74908886b5270d37ad Fix RTS build on OS X" by hand.) In other words, the adjusted build 599 succeeds and threadDelay seems to work. And build 600 succeeds and threadDelay provides no apparent delay. It is slow going, but I expect to be able to narrow down further within the next couple of days. In the meantime, the present interval may provide some useful hints. Best regards Thorkil -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7299#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler