File: tainted.t

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libscalar-list-utils-perl 1%3A1.47-1~bpo8%2B1
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#!./perl -T

use strict;
use warnings;

use Test::More tests => 5;

use Scalar::Util qw(tainted);

ok( !tainted(1), 'constant number');

my $var = 2;

ok( !tainted($var), 'known variable');

ok( tainted($^X),	'interpreter variable');

$var = $^X;
ok( tainted($var),	'copy of interpreter variable');

{
    package Tainted;
    sub TIESCALAR { bless {} }
    sub FETCH { $^X }
}

tie my $tiedvar, 'Tainted';
ok( tainted($tiedvar), 'for magic variables');