If your perl is dumping core, that's a perl bug (or a libc bug or the like) by definition, not an ikiwiki bug. Ikiwiki is pure perl code; pure perl code can't cause perl to dump core unless it tickles a perl bug.
Calling this done since this is not the right forum. You'll need to figure out what's wrong with your perl, I'm afraid. --Joey
rendering todo/more_class__61____34____34___for_css.mdwn rendering todo/Support_subdirectory_of_a_git_repo.mdwn rendering todo/link_map.mdwn rendering todo/calendar_--_archive_browsing_via_a_calendar_frontend.mdwn *** glibc detected *** perl: double free or corruption (!prev): 0x00000000018a7bd0 ***