foo()
{
	local -a myvar=()
	local -r myvar=0

	echo "${myvar[@]}"
	declare -p myvar
}

foo2()
{
	local -i myvar=0
	local -r myvar=1

	echo "${myvar}"
	declare -p myvar
}

declare -a outside=()
declare -r outside
declare -p outside

outside1=1
declare -ir outside1
declare -p outside1

tempenv=foo declare -r tempenv
echo tempenv = $tempenv

foo
foo2

tempvar1=foo declare -r tempvar1
echo ${tempvar1@A}

tempvar2=bar declare -r tempvar2=qux
echo ${tempvar2@A}