[perl #130446] [REGRESSION] [LTA] Creating an enum from a Hash does not work but no longer warns (enum Bits (%thing))

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# New Ticket Created by  Aleks-Daniel Jakimenko-Aleksejev 
# Please include the string:  [perl #130446]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=130446 >


Code:
my %h = <a 1 b 2>; enum Bits (%h); dd Bits.enums


Result (2016.05):
WARNINGS for /tmp/R9MG8i4xtv:
Useless use of %h in sink context (line 1)
Map.new(())


Result (HEAD):
Map.new(())


It is kinda sad that the error message is no longer there. Is there anything we 
can do about it?