In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p.Referenceshttps://usn.ubuntu.com/3593-1/https://security.gentoo.org/glsa/201805-10https://sourceforge.net/p/zsh/code/ci/c2cc8b0fbefc9868fa83537f5b6d90fc1ec438ddhttps://access.redhat.com/errata/RHSA-2018:3073
