C:\>set PERL_USE_UNSAFE_INC=1;

C:\>perl -le "print for @INC;"
C:/perl-5.34.0/site/lib/MSWin32-x64-multi-thread
C:/perl-5.34.0/site/lib
C:/perl-5.34.0/lib/MSWin32-x64-multi-thread
C:/perl-5.34.0/lib

C:\>set PERL_USE_UNSAFE_INC=1

C:\>perl -le "print for @INC;"
C:/perl-5.34.0/site/lib/MSWin32-x64-multi-thread
C:/perl-5.34.0/site/lib
C:/perl-5.34.0/lib/MSWin32-x64-multi-thread
C:/perl-5.34.0/lib
.

C:\>