I can confirm this bug on AWStats 7.4, Perl 5.22.1, running as a cronjob as a part of IRedMail
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\"%{ <-- HERE Referer}i\"/ at /usr/lib/cgi-bin/awstats.pl line 9043. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\"%{ <-- HERE User-Agent}i\"/ at /usr/lib/cgi-bin/awstats.pl line 9044. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/%{ <-- HERE mod_gzip_input_size}n/ at /usr/lib/cgi-bin/awstats.pl line 9045. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/%{ <-- HERE mod_gzip_output_size}n/ at /usr/lib/cgi-bin/awstats.pl line 9046. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/%{ <-- HERE mod_gzip_compression_ratio}n/ at /usr/lib/cgi-bin/awstats.pl line 9047. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\(%{ <-- HERE ratio}n\)/ at /usr/lib/cgi-bin/awstats.pl line 9048. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1585121 Title: awstats produces regex warnings in version 7.4 with Perl 5.22 on Ubuntu 16.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/awstats/+bug/1585121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs