Public bug reported:

I just downloaded and compiled stock Perl 5.24.1 without any Ubuntu
packages.

Then I put this in a file called foo.pl:

--cut
do 'froodle.conf';
print $froodle, "\n";
--cut

and this in froodle.conf:

--cut
$froodle = 'freedle';
--cut

Then I ran "perl foo.pl" with the stock Perl I had just compiled, and
saw this:

--cut
$ perl foo.pl
freedle
$ 
--cut

However, when I run "perl foo.pl" with the version of Perl included in
Zesty, I see this:

--cut
$ perl foo.pl

$
--cut

This is a serious, significant difference in behavior between stock Perl
and Ubuntu's Perl, and a regression from Yakkety.

Using "do EXPR" to get variable settings from configuration files is
even documented in the Perl documentation
(https://perldoc.perl.org/functions/do.html). You can't just break this.
:-/

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: perl 5.24.1-2ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Sun Apr 16 16:11:29 2017
InstallationDate: Installed on 2016-01-16 (456 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: perl
UpgradeStatus: Upgraded to zesty on 2017-04-14 (2 days ago)

** Affects: perl (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug regression zesty

** Tags added: regression

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https://bugs.launchpad.net/bugs/1683179

Title:
  Variables set inside files executed with do not visible to script

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