/usr/share/perl/5.26.1/integer.pm is in perl-modules-5.26 5.26.1-6ubuntu0.3.
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 | package integer;
our $VERSION = '1.01';
$integer::hint_bits = 0x1;
sub import {
$^H |= $integer::hint_bits;
}
sub unimport {
$^H &= ~$integer::hint_bits;
}
1;
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