#16387: Duplicate vsnwprintf symbol on Windows ---------------------------------+---------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: Windows | Architecture: Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ---------------------------------+---------------------------------------- Changes (by bgamari): * os: Unknown/Multiple => Windows Old description:
Leading to failure of `T5836`:
``` Stderr ( T5836 ): GHC runtime linker: fatal error: I found a duplicate definition for symbol __mingw_vsnwprintf whilst processing object file C:\GitLabRunner\builds\8fc0e283\0\ghc\ghc\inplace\mingw\x86_64-w64-mingw32\lib\libmingwex.a The symbol was previously defined in (GHCi built-in symbols) 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-stage2.exe: panic! (the 'impossible' happened) (GHC version 8.9.20190303 for x86_64-unknown-mingw32): loadArchive "C:\\GitLabRunner\\builds\\8fc0e283\\0\\ghc\\ghc\\inplace\\mingw\\x86_64-w64-mingw32\\lib\\libmingwex.a": failed
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug *** unexpected failure for T5836(ghci) ```
New description: Leading to failure of `T5836`: {{{ Stderr ( T5836 ): GHC runtime linker: fatal error: I found a duplicate definition for symbol __mingw_vsnwprintf whilst processing object file C:\GitLabRunner\builds\8fc0e283\0\ghc\ghc\inplace\mingw\x86_64-w64-mingw32\lib\libmingwex.a The symbol was previously defined in (GHCi built-in symbols) 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-stage2.exe: panic! (the 'impossible' happened) (GHC version 8.9.20190303 for x86_64-unknown-mingw32): loadArchive "C:\\GitLabRunner\\builds\\8fc0e283\\0\\ghc\\ghc\\inplace\\mingw\\x86_64-w64-mingw32\\lib\\libmingwex.a": failed Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug *** unexpected failure for T5836(ghci) }}} -- Comment: It seems there is some funniness around `printf` and MinGW. See `Note [Symbols for MinGW's printf]`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16387#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler