hiera_array() fails when used in class parameters

bash-4.1# cat /etc/puppet/hiera.yaml 

---

:backends:

    - yaml

:hierarchy:

    - one

    - two

:yaml:

    :datadir: '/etc/puppet/hieradata'

:merge_behavior: deeper

...

bash-4.1# cat /etc/puppet/hieradata/{one,two}.yaml

---

foo::message: one

...

---

foo::message: two

...

bash-4.1# cat fail.pp 

class foo ( $message = hiera_array('foo::message') ) { notify { $message: } }

include ::foo

bash-4.1# puppet apply fail.pp 

Notice: Compiled catalog for 435d243ccf29.ofi.softonic.lan in environment production in 0.48 seconds

Notice: one

Notice: /Stage[main]/Foo/Notify[one]/message: defined 'message' as 'one'

Notice: Finished catalog run in 0.05 seconds

bash-4.1# cat win.pp           

class foo {

  $message = hiera_array('foo::message')

  notify { $message: }

}

include ::foo

bash-4.1# puppet apply win.pp 

Notice: Compiled catalog for 435d243ccf29.ofi.softonic.lan in environment production in 0.35 seconds

Notice: one

Notice: /Stage[main]/Foo/Notify[one]/message: defined 'message' as 'one'

Notice: two

Notice: /Stage[main]/Foo/Notify[two]/message: defined 'message' as 'two'

Notice: Finished catalog run in 0.07 seconds