indirarray()
{
   local intermediary
   local sub

   intermediary="${1}[@]"
   local -a leftValue=("${!intermediary}")

   local -a leftSub
   eval leftSub=(\"\${!${1}[@]}\")

   echo "$1" Value = ${leftValue[@]}
   echo "$1" Sub = ${leftSub[@]}
}

a=(1 2 3 4 5)
b=(a b c d e)

c=([0]=10 [2]=20 [4]=40 [8]=80)

indirarray a
indirarray b
indirarray c

ref=a
tmp="$ref[@]"
printf "<%s> " "${!tmp}"; echo    # Iterate whole array.

ref=c
tmp="$ref[@]"
printf "<%s> " "${!tmp}"; echo    # Iterate whole array.