updating perl from 5.16.x to 5.18.1 prompts rebuild of www-apache/mod_perl. latest stable version in portage is 2.0.7. Reproducible: Always
Created attachment 358302 [details] build.log
Created attachment 358304 [details] emerge --info perl
2.0.8 seems to fix it.
*** This bug has been marked as a duplicate of bug 484038 ***