/usr/share/perl5/Debconf/TmpFile.pm is in debconf 1.5.61.
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  | #!/usr/bin/perl
# This file was preprocessed, do not edit!
package Debconf::TmpFile;
use strict;
use IO::File;
use Fcntl;
use File::Temp;
my $filename;
sub open {
	my $fh; # will be autovivified
	my $ext=shift || '';
	($fh, $filename) = File::Temp::tempfile(SUFFIX => $ext);
	return $fh;
}
sub filename {
	return $filename;
}
sub cleanup {
	unlink $filename;
}
1
 |