[perl #131395] Using a cross meta operator on an empty list complains about not supporting elems

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# New Ticket Created by  Steve Schulze 
# Please include the string:  [perl #131395]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=131395 >


Using a cross meta operator on an empty list complains "This type 
(Scalar) does not support elems".

     say (1,2).elems; say ().elems; say (1,2) X ();

yields "2␤0␤This type (Scalar) does not support elems"

Seems to work correctly with arrays instead of lists.

         say [1,2].elems; say [].elems; say [1,2] X [];


Linux Mint 17.2

 >perl6 -v
 >This is Rakudo version 2017.05 built on MoarVM version 2017.05 
implementing Perl 6.c.