C:\>perl -MO=Xref -de 1

Loading DB routines from perl5db.pl version 1.3
Editor support available.

Enter h or `h h' for help, or `perldoc perldebug' for more help.

Can't locate object method "NAME" via package "B::SPECIAL" at C:/strawberry/perl/lib/B/Xref.pm line 162.
CHECK failed--call queue aborted.
 at -e line 0