#11748: GHC runtime linker: fatal error: I found a duplicate definition for symbol -------------------------------------+------------------------------------- Reporter: jeiea | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 (Linking) | Keywords: | Operating System: Windows Architecture: x86_64 | Type of failure: Compile-time (amd64) | crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I found GHC panic when using both inline-c and local Win32 package. I don't know whether it's related to #6107. {{{ D:\ghc-bug-maybe>stack build Win32a-2.3.1.0: build Win32a-2.3.1.0: copy/register ghc-bug-maybe-0.1.0.0: configure ghc-bug-maybe-0.1.0.0: build Completed 2 action(s). -- While building package ghc-bug-maybe-0.1.0.0 using: C:\AppData\Roaming\stack\setup-exe-cache\x86_64-windows\setup- Simple-Cabal-1.22.5.0-ghc-7.10.3.exe --builddir=.stack-work\dist\2672c1f3 build lib:ghc-bug-maybe exe:DualternativeH-exe --ghc-options " -ddump-hi -ddump-to-file" Process exited with code: ExitFailure 1 Logs have been written to: D:\ghc-bug-maybe\.stack-work\logs\ghc-bug- maybe-0.1.0.0.log Configuring ghc-bug-maybe-0.1.0.0... Preprocessing library ghc-bug-maybe-0.1.0.0... [1 of 1] Compiling Lib ( src\Lib.hs, .stack- work\dist\2672c1f3\build\Lib.o ) GHC runtime linker: fatal error: I found a duplicate definition for symbol rgb whilst processing object file D:\ghc-bug-maybe\.stack-work\install\0464eb7a\lib\x86_64-windows- ghc-7.10.3\Win32a-2.3.1.0-JATTCAFziPX9UILXdwDTPA\HSWin32a-2.3.1.0-JATTCAFziPX9UILXdwDTPA.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 7.10.3 for x86_64-unknown-mingw32): loadObj "D:\\ghc-bug-maybe\\.stack- work\\install\\0464eb7a\\lib\\x86_64-windows- ghc-7.10.3\\Win32a-2.3.1.0-JATTCAFziPX9UILXdwDTPA\\HSWin32a-2.3.1.0-JATTCAFziPX9UILXdwDTPA.o": failed Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11748 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler