>perl -MScalar::Util=tainted -T -le"use FindBin; print tainted($FindBin::RealBin) ?1:0"
1

##</code><code>##

>perl -MScalar::Util=tainted -T -le"use FindBin; unshift @INC, $FindBin::RealBin; require Module;"
Insecure dependency in require while running with -T switch at -e line 1.