/usr/share/perl/5.20.2/strict.pm is in perl-base 5.20.2-3+deb8u11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | package strict;
$strict::VERSION = "1.08";
# Verify that we're called correctly so that strictures will work.
unless ( __FILE__ =~ /(^|[\/\\])\Q${\__PACKAGE__}\E\.pmc?$/ ) {
# Can't use Carp, since Carp uses us!
my (undef, $f, $l) = caller;
die("Incorrect use of pragma '${\__PACKAGE__}' at $f line $l.\n");
}
my %bitmask = (
refs => 0x00000002,
subs => 0x00000200,
vars => 0x00000400
);
my %explicit_bitmask = (
refs => 0x00000020,
subs => 0x00000040,
vars => 0x00000080
);
sub bits {
my $bits = 0;
my @wrong;
foreach my $s (@_) {
if (exists $bitmask{$s}) {
$^H |= $explicit_bitmask{$s};
}
else { push @wrong, $s };
$bits |= $bitmask{$s} || 0;
}
if (@wrong) {
require Carp;
Carp::croak("Unknown 'strict' tag(s) '@wrong'");
}
$bits;
}
my @default_bits = qw(refs subs vars);
sub import {
shift;
$^H |= bits(@_ ? @_ : @default_bits);
}
sub unimport {
shift;
$^H &= ~ bits(@_ ? @_ : @default_bits);
}
1;
__END__
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