#14053: Runtime linker failed due to a duplicate symbol definition -------------------------------------+------------------------------------- Reporter: | Owner: (none) SwiftsNamesake | Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 (Linking) | Keywords: linker, | Operating System: Unknown/Multiple windows | Architecture: | Type of failure: Compile-time Unknown/Multiple | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- {{{ Preprocessing library Pixels-0.1.0.0... [1 of 9] Compiling Pixels.Walker ( src\Pixels\Walker.hs, .stack- work\dist\ca59d0ab\build\Pixels\Walker.o ) [2 of 9] Compiling Pixels.Types ( src\Pixels\Types.hs, .stack- work\dist\ca59d0ab\build\Pixels\Types.o ) GHC runtime linker: fatal error: I found a duplicate definition for symbol runInteractiveProcess whilst processing object file C:\Users\Jonatan\AppData\Local\Programs\stack\x86_64-windows\ghc-8.0.2\lib\process-1.4.3.0\HSprocess-1.4.3.0.o The symbol was previously defined in C:\sr\snapshots\55a68d16\lib\x86_64-windows- ghc-8.0.2\process-1.4.2.0-KoK49SuYVPk1TQ4YVt6ZK5\HSprocess-1.4.2.0-KoK49SuYVPk1TQ4YVt6ZK5.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. ghc.EXE: panic! (the 'impossible' happened) (GHC version 8.0.2 for x86_64-unknown-mingw32): loadObj "C:\\Users\\Jonatan\\AppData\\Local\\Programs\\stack\\x86_64-windows\\ghc-8.0.2\\lib\\process-1.4.3.0\\HSprocess-1.4.3.0.o": failed CallStack (from HasCallStack): error, called at libraries\ghci\GHCi\ObjLink.hs:97:21 in ghci-8.0.2:GHCi.ObjLink Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} OS: Windows 10 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14053 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler