/usr/lib/x86_64-linux-gnu/perl5/5.24/Data/MessagePack/Boolean.pm is in libdata-messagepack-perl 1.00-1+b1.
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 Data::MessagePack::Boolean;
use strict;
use warnings;
use overload
'bool' => sub { ${ $_[0] } },
'0+' => sub { ${ $_[0] } },
'""' => sub { ${ $_[0] } ? 'true' : 'false' },
fallback => 1,
;
our $true = do { bless \(my $dummy = 1) };
our $false = do { bless \(my $dummy = 0) };
1;
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