[perl #122514] [BUG] LTA internal error message when declaring anonymous enum with '::' in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #122514]
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<cognome> r:   enum < un >; say un
<camelia> rakudo-moar 0c42c1: OUTPUT«===SORRY!=== Error while
compiling /tmp/tmpfile␤Undeclared routine:␤    un used [...]
<jnthn> cognome: anonymous enum doesn't install symbols
<cognome> r:   enum E < un >; say un
<camelia> rakudo-{parrot,jvm,moar} 0c42c1: OUTPUT«un␤»
<masak> m: enum :: <un>
<camelia> rakudo-moar 0c42c1: OUTPUT«===SORRY!===␤MVMArray: Can't pop
from an empty array␤»
* masak submits rakudobug

I see nothing wrong with declaring an 'enum ::' like that. (Though in
sink context it'd be a bit meaningless, I guess.) Anyway, shouldn't
give an internal error like that.