Duplicate symbol error on Windows

T11072gcc is failing on Windows with

Wrong exit code for T11072gcc()(expected 0 , actual 2 )
Stderr ( T11072gcc ):
GHC runtime linker: fatal error: I found a duplicate definition for symbol
   ghczmprim_GHCziClasses_zdp31ZLzvz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUz2cUzvZR_info
whilst processing object file
   C:\GitLabRunner\builds\78d7d3f9\0\ghc\ghc\testsuite\tests\ghci\linking\dyn\T11072gcc.run\bin_impl_gcc\libASx.dll.a
The symbol was previously defined in
   C:\GitLabRunner\builds\78d7d3f9\0\ghc\ghc\libraries\ghc-prim\dist-install\build\HSghc-prim-0.5.3.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-stage2.exe: panic! (the 'impossible' happened)
  (GHC version 8.7.20190106 for x86_64-unknown-mingw32):
	loadArchive "C:\\GitLabRunner\\builds\\78d7d3f9\\0\\ghc\\ghc\\testsuite\\tests\\ghci\\linking\\dyn\\T11072gcc.run\\bin_impl_gcc\\libASx.dll.a": failed

Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug

make[2]: *** [Makefile:85: compile_libAS_impl_gcc] Error 1

Trac metadata

Trac field	Value
Version	8.6.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture