/usr/share/perl5/perl5i/0/HASH.pm is in libperl5i-perl 2.8.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package perl5i::0::HASH;
use 5.010;
use strict;
use warnings;
use Carp;
sub HASH::flip {
croak "Can't flip hash with references as values"
if grep { ref } values %{$_[0]};
my %flipped = reverse %{$_[0]};
return wantarray ? %flipped : \%flipped;
}
sub HASH::merge {
require Hash::Merge::Simple;
my $merged = Hash::Merge::Simple::merge(@_);
return wantarray ? %$merged : $merged;
}
1;
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