https://bugs.gentoo.org/851522 https://gitweb.gentoo.org/repo/gentoo.git/commit/net-irc/irssi/files/irssi-1.4.1-no-werror-decl.patch?id=d5bde60aca1e5821685c1488d88edf16228eea84 https://github.com/Perl/perl5/pull/19384 reported by @dwfreed only happens on threaded perl