5.8.7/CGI/Util.pm
5.8.7/overload.pm line 93.
5.8.7/Math/Complex.pm line 1378.
5.8.7/Math/Complex.pm line 1392.
5.8.7/Math/Complex.pm line 1433.
5.8.7/Math/Complex.pm line 1462.
5.8.7/Math/Complex.pm line 1463.
5.8.7/Test/More.pm line 786.
5.8.7/Test/Builder.pm line 592.
5.8.7/Test/Builder.pm line 763.
5.8.7/Test/Builder.pm line 830.
5.8.7/Test/Harness.pm line 764.
site_perl/5.8.7/Pod/Simple/RTF.pm line 292.
5.8.7/CPAN.pm line 1717.
5.8.7/CPAN.pm line 1739.
5.8.7/CPAN.pm line 1990.
5.8.7/CPAN.pm line 5284.
5.8.7/CPAN.pm line 5297.
5.8.7/CPAN.pm line 5305.
5.8.7/CPAN.pm line 5307.
5.8.7/CPAN.pm line 5322.
5.8.7/CPAN.pm line 5380.
5.8.7/CPAN.pm line 5385.
5.8.7/CPAN.pm line 5387.
5.8.7/CPAN.pm line 5389.

    All of these places threw warnings but are utterly safe.