Reflects if taint mode is on or off. 1 for on (the program was run with-T), 0 for off, -1 when only taint warnings are enabled (i.e. with-t or-TU).
Note: if your perl was built without taint support (seeperlsec), then${^TAINT} will always be 0, even if the program was run with-T).
This variable is read-only.
This variable was added in Perl v5.8.0.
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