[perl #66824] "argument doesn't array" with one-item ranges

[via RT]

# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #66824]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=66824 >


21:03 <@moritz_> rakudo: my @a = 1, 2, 4; sub f($a) { say $a };
f(|@a[*-1..*-1])
21:03 < p6eval> rakudo 1b06df: OUTPUT«argument doesn't array␤in sub f
                (/tmp/2x4tmnOO68:1)␤called from Main (/tmp/2x4tmnOO68:2)␤»

OTOH, this works:

21:01 <@moritz_> rakudo: my @a = 1, 2, 4; sub f($a, $b) { say "$a|$b" };
                 f(|@a[*-2..2])
21:01 < p6eval> rakudo 1b06df: OUTPUT«2|4␤»


Cheers,
Moritz