#14669: 32-bit binaries sometimes throw a stack overflow on shutdown. -----------------------------------+---------------------------------- Reporter: sergv | Owner: (none) Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Runtime System | Version: 8.2.1 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -----------------------------------+---------------------------------- Comment (by Phyx-): hmm, ok. Looking closer, the issue is that at `-O1` and higher the compiler notices the space isn't used. Because it's stack allocated it won't be valid outside the frame anyway so it correctly optimizes away the allocation. I have to wait till the weekend to look at it, but things to try if you wish: - try marking the function `volatile`; - try adding `__attribute__((optimize("O0")))` to the function to disable optimizations. Second one will probably work, but isn't very portable. so I'll likely go with inline assembly. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14669#comment:23 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler