in reply to Re^7: How to disable taint checking by Perl?
in thread How to disable taint checking by Perl?

Changes in the C preprocessor symbols affects how Perl is compiled. If you don't compile Perl yourself using these special symbols, your perl executable supports taint checks.

The items in the documentation are not related to the paragraph about the C preprocessor symbols. These things are never tainted/checked for taintedness.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In Section Seekers of Perl Wisdom