ghc.exe: Could not load `libgcc_s_seh-1.dll'

Summary

Many packages fail to build or produce erroneous executables on Windows.

Steps to reproduce

On Windows:

1. Install GHCup & GHC 8.10.7 & cabal-install 3.6.2.0
2. cabal unpack bytestring
3. cd .\bytestring-0.11.3.0\
4. cabal test

This produces the output:

...
[ 7 of 15] Compiling Lift             ( tests\Lift.hs, C:\Users\Jaro\test\bytestring-0.11.3.0\dist-newstyle\build\x86_64-windows\ghc-8.10.7\bytestring-0.11.3.0\t\bytestring-tests\build\bytestring-tests\bytestring-tests-tmp\Lift.o )
ghc.exe: Could not load `libgcc_s_seh-1.dll'. Reason: addDLL: libgcc_s_seh-1.dll or dependencies not loaded. (Win32 error 126)

ghc.exe: panic! (the 'impossible' happened)
  (GHC version 8.10.7:
        loadArchive "C:\\ghcup\\ghc\\8.10.7\\mingw\\lib\\gcc\\x86_64-w64-mingw32\\9.2.0\\libgcc_s.a": failed

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

Expected behavior

Compile successfully.

Environment

• GHC version used: 8.10.7

Optional:

• Operating System: Windows 10
• System Architecture: x86_64