#8608: internal error: ARR_WORDS object entered! ----------------------------+---------------------------------- Reporter: Rothiph | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Windows Architecture: x86 | Type of failure: Runtime crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------+---------------------------------- I'm using Windows 8.1 64-bit, the latest Windows SDK, and the latest Haskell Platform to rebuild a project. This project was previously building on Windows 7 64-bit with the same HP and a previous version of the Windows SDK. Source code for the project was unchanged, but my .cabal file was updated with different "extra-lib-dirs", "include-dirs", and "extra-libraries" fields. When running this program after a `cabal build` I see the following error: Segmentation fault/access violation in generated code Using print statements I was able to locate the error as occurring during a call to an external DLL function. I would assume this is a bug in my own code. Access violations are expected when misusing FFI, after all. However, I get a different error when compiling with profiling, and then executing with `Main.exe +RTS -xc`: Main.exe: internal error: ARR_WORDS object entered! (GHC version 7.6.3 for i386_unknown_mingw32) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Coming up with a minimal example would take time, but I can do that if someone thinks there is a possibility of this being a GHC bug. Is it possible for this message to appear under normal circumstances by programmer error? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8608 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler