#!/bin/zsh

function iter {
  local -a files2=$1
  for file in $files2; do
    echo "omg $file"
  done
}

typeset -a files1
files=$(find .)
iter $files




erg:bleh erg$ zsh --version
zsh 5.0.8 (x86_64-apple-darwin15.0)
erg:bleh erg$ ./omg.sh
iter:local:1: files2: can't assign initial value for array