#10639: Optimization changes concurrent program's behaviour -------------------------------------+------------------------------------- Reporter: gizmo.mk0 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Windows | Architecture: x86_64 Type of failure: Incorrect result | (amd64) at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by slyfox): * cc: slyfox (added) Comment: It's a result of cooperative multitasking in ghc: Trac #367 In short: non-allocating threads can starve other threads, can be worked- around by -fno-omit-yields -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10639#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler